From a1dc080c27ec8ea7ca1c8a9b499362a71ebff792 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Sat, 1 Nov 2008 14:20:50 +0200 Subject: UBIFS: use bit-fields to store compression type Save a 4 bytes of RAM per 'struct inode' by stroring inode compression type in bit-filed, instead of using 'int'. Signed-off-by: Artem Bityutskiy --- fs/ubifs/ubifs.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 46b172560a0..4d76aba57ee 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -386,12 +386,12 @@ struct ubifs_inode { unsigned int dirty:1; unsigned int xattr:1; unsigned int bulk_read:1; + unsigned int compr_type:2; struct mutex ui_mutex; spinlock_t ui_lock; loff_t synced_i_size; loff_t ui_size; int flags; - int compr_type; pgoff_t last_page_read; pgoff_t read_in_a_row; int data_len; @@ -946,6 +946,7 @@ struct ubifs_mount_opts { * @no_chk_data_crc: do not check CRCs when reading data nodes (except during * recovery) * @bulk_read: enable bulk-reads + * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc) * * @tnc_mutex: protects the Tree Node Cache (TNC), @zroot, @cnext, @enext, and * @calc_idx_sz @@ -986,7 +987,6 @@ struct ubifs_mount_opts { * @main_lebs: count of LEBs in the main area * @main_first: first LEB of the main area * @main_bytes: main area size in bytes - * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc) * * @key_hash_type: type of the key hash * @key_hash: direntry key hash function @@ -1196,6 +1196,7 @@ struct ubifs_info { unsigned int big_lpt:1; unsigned int no_chk_data_crc:1; unsigned int bulk_read:1; + unsigned int default_compr:2; struct mutex tnc_mutex; struct ubifs_zbranch zroot; @@ -1237,7 +1238,6 @@ struct ubifs_info { int main_lebs; int main_first; long long main_bytes; - int default_compr; uint8_t key_hash_type; uint32_t (*key_hash)(const char *str, int len); -- cgit v1.2.3-70-g09d2 From 553dea4dd531562688ba01c641c7f8fc7abaaf8c Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Sat, 1 Nov 2008 14:57:49 +0200 Subject: UBIFS: introduce compression mount options It is very handy to be able to change default UBIFS compressor via mount options. Introduce -o compr= mount option support. Currently only "none", "lzo" and "zlib" compressors are supported. Signed-off-by: Artem Bityutskiy --- Documentation/filesystems/ubifs.txt | 3 +++ fs/ubifs/compress.c | 6 ++--- fs/ubifs/sb.c | 10 +++++---- fs/ubifs/super.c | 44 +++++++++++++++++++++++++++++++------ fs/ubifs/ubifs.h | 12 ++++++++-- 5 files changed, 59 insertions(+), 16 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/Documentation/filesystems/ubifs.txt b/Documentation/filesystems/ubifs.txt index dd84ea3c10d..2d0db5482d2 100644 --- a/Documentation/filesystems/ubifs.txt +++ b/Documentation/filesystems/ubifs.txt @@ -95,6 +95,9 @@ no_chk_data_crc skip checking of CRCs on data nodes in order to of this option is that corruption of the contents of a file can go unnoticed. chk_data_crc (*) do not skip checking CRCs on data nodes +compr=none override defoult comressor and set it to "none" +compr=lzo override defoult comressor and set it to "lzo" +compr=zlib override defoult comressor and set it to "zlib" Quick usage instructions diff --git a/fs/ubifs/compress.c b/fs/ubifs/compress.c index 6414d50780e..4afb3ea24d4 100644 --- a/fs/ubifs/compress.c +++ b/fs/ubifs/compress.c @@ -33,7 +33,7 @@ /* Fake description object for the "none" compressor */ static struct ubifs_compressor none_compr = { .compr_type = UBIFS_COMPR_NONE, - .name = "no compression", + .name = "none", .capi_name = "", }; @@ -43,13 +43,13 @@ static DEFINE_MUTEX(lzo_mutex); static struct ubifs_compressor lzo_compr = { .compr_type = UBIFS_COMPR_LZO, .comp_mutex = &lzo_mutex, - .name = "LZO", + .name = "lzo", .capi_name = "lzo", }; #else static struct ubifs_compressor lzo_compr = { .compr_type = UBIFS_COMPR_LZO, - .name = "LZO", + .name = "lzo", }; #endif diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c index 0f392351dc5..c5da201ab54 100644 --- a/fs/ubifs/sb.c +++ b/fs/ubifs/sb.c @@ -179,8 +179,11 @@ static int create_default_filesystem(struct ubifs_info *c) sup->fanout = cpu_to_le32(DEFAULT_FANOUT); sup->lsave_cnt = cpu_to_le32(c->lsave_cnt); sup->fmt_version = cpu_to_le32(UBIFS_FORMAT_VERSION); - sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO); sup->time_gran = cpu_to_le32(DEFAULT_TIME_GRAN); + if (c->mount_opts.override_compr) + sup->default_compr = cpu_to_le16(c->mount_opts.compr_type); + else + sup->default_compr = cpu_to_le16(UBIFS_COMPR_LZO); generate_random_uuid(sup->uuid); @@ -582,16 +585,15 @@ int ubifs_read_superblock(struct ubifs_info *c) c->jhead_cnt = le32_to_cpu(sup->jhead_cnt) + NONDATA_JHEADS_CNT; c->fanout = le32_to_cpu(sup->fanout); c->lsave_cnt = le32_to_cpu(sup->lsave_cnt); - c->default_compr = le16_to_cpu(sup->default_compr); c->rp_size = le64_to_cpu(sup->rp_size); c->rp_uid = le32_to_cpu(sup->rp_uid); c->rp_gid = le32_to_cpu(sup->rp_gid); sup_flags = le32_to_cpu(sup->flags); + if (!c->mount_opts.override_compr) + c->default_compr = le16_to_cpu(sup->default_compr); c->vfs_sb->s_time_gran = le32_to_cpu(sup->time_gran); - memcpy(&c->uuid, &sup->uuid, 16); - c->big_lpt = !!(sup_flags & UBIFS_FLG_BIGLPT); /* Automatically increase file system size to the maximum size */ diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 21b4103271e..fc81022cc26 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -417,6 +417,11 @@ static int ubifs_show_options(struct seq_file *s, struct vfsmount *mnt) else if (c->mount_opts.chk_data_crc == 1) seq_printf(s, ",no_chk_data_crc"); + if (c->mount_opts.override_compr) { + seq_printf(s, ",compr="); + seq_printf(s, ubifs_compr_name(c->mount_opts.compr_type)); + } + return 0; } @@ -878,6 +883,7 @@ static int check_volume_empty(struct ubifs_info *c) * Opt_no_bulk_read: disable bulk-reads * Opt_chk_data_crc: check CRCs when reading data nodes * Opt_no_chk_data_crc: do not check CRCs when reading data nodes + * Opt_override_compr: override default compressor * Opt_err: just end of array marker */ enum { @@ -887,6 +893,7 @@ enum { Opt_no_bulk_read, Opt_chk_data_crc, Opt_no_chk_data_crc, + Opt_override_compr, Opt_err, }; @@ -897,6 +904,7 @@ static const match_table_t tokens = { {Opt_no_bulk_read, "no_bulk_read"}, {Opt_chk_data_crc, "chk_data_crc"}, {Opt_no_chk_data_crc, "no_chk_data_crc"}, + {Opt_override_compr, "compr=%s"}, {Opt_err, NULL}, }; @@ -950,6 +958,28 @@ static int ubifs_parse_options(struct ubifs_info *c, char *options, c->mount_opts.chk_data_crc = 1; c->no_chk_data_crc = 1; break; + case Opt_override_compr: + { + char *name = match_strdup(&args[0]); + + if (!name) + return -ENOMEM; + if (!strcmp(name, "none")) + c->mount_opts.compr_type = UBIFS_COMPR_NONE; + else if (!strcmp(name, "lzo")) + c->mount_opts.compr_type = UBIFS_COMPR_LZO; + else if (!strcmp(name, "zlib")) + c->mount_opts.compr_type = UBIFS_COMPR_ZLIB; + else { + ubifs_err("unknown compressor \"%s\"", name); + kfree(name); + return -EINVAL; + } + kfree(name); + c->mount_opts.override_compr = 1; + c->default_compr = c->mount_opts.compr_type; + break; + } default: ubifs_err("unrecognized mount option \"%s\" " "or missing value", p); @@ -1100,13 +1130,13 @@ static int mount_ubifs(struct ubifs_info *c) goto out_free; /* - * Make sure the compressor which is set as the default on in the - * superblock was actually compiled in. + * Make sure the compressor which is set as default in the superblock + * or overriden by mount options is actually compiled in. */ if (!ubifs_compr_present(c->default_compr)) { - ubifs_warn("'%s' compressor is set by superblock, but not " - "compiled in", ubifs_compr_name(c->default_compr)); - c->default_compr = UBIFS_COMPR_NONE; + ubifs_err("'compressor \"%s\" is not compiled in", + ubifs_compr_name(c->default_compr)); + goto out_free; } dbg_failure_mode_registration(c); @@ -2023,8 +2053,8 @@ static int __init ubifs_init(void) /* * We use 2 bit wide bit-fields to store compression type, which should * be amended if more compressors are added. The bit-fields are: - * @compr_type in 'struct ubifs_inode' and @default_compr in - * 'struct ubifs_info'. + * @compr_type in 'struct ubifs_inode', @default_compr in + * 'struct ubifs_info' and @compr_type in 'struct ubifs_mount_opts'. */ BUILD_BUG_ON(UBIFS_COMPR_TYPES_CNT > 4); diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 4d76aba57ee..16840e099ef 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -893,13 +893,21 @@ struct ubifs_orphan { /** * struct ubifs_mount_opts - UBIFS-specific mount options information. * @unmount_mode: selected unmount mode (%0 default, %1 normal, %2 fast) - * @bulk_read: enable bulk-reads - * @chk_data_crc: check CRCs when reading data nodes + * @bulk_read: enable/disable bulk-reads (%0 default, %1 disabe, %2 enable) + * @chk_data_crc: enable/disable CRC data checking when reading data nodes + * (%0 default, %1 disabe, %2 enable) + * @override_compr: override default compressor (%0 - do not override and use + * superblock compressor, %1 - override and use compressor + * specified in @compr_type) + * @compr_type: compressor type to override the superblock compressor with + * (%UBIFS_COMPR_NONE, etc) */ struct ubifs_mount_opts { unsigned int unmount_mode:2; unsigned int bulk_read:2; unsigned int chk_data_crc:2; + unsigned int override_compr:1; + unsigned int compr_type:2; }; /** -- cgit v1.2.3-70-g09d2 From 17c2f9f85c896b48a5d74a9155d99ec5b241a0e6 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 17 Oct 2008 13:31:39 +0300 Subject: UBIFS: separate debugging fields out Introduce a new data structure which contains all debugging stuff inside. This is cleaner than having debugging stuff directly in 'c'. Signed-off-by: Artem Bityutskiy --- fs/ubifs/commit.c | 25 +++++++++--------- fs/ubifs/debug.c | 71 +++++++++++++++++++++++++++++++++++++++------------ fs/ubifs/debug.h | 51 ++++++++++++++++++++++++++++++------ fs/ubifs/lprops.c | 2 +- fs/ubifs/lpt_commit.c | 55 +++++++++++++++++++-------------------- fs/ubifs/orphan.c | 2 +- fs/ubifs/super.c | 22 +++++----------- fs/ubifs/tnc_commit.c | 7 ++--- fs/ubifs/ubifs.h | 34 +++--------------------- 9 files changed, 156 insertions(+), 113 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/commit.c b/fs/ubifs/commit.c index b49884c8c10..f3a7945527f 100644 --- a/fs/ubifs/commit.c +++ b/fs/ubifs/commit.c @@ -470,12 +470,12 @@ int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot) { struct ubifs_idx_node *idx; int lnum, offs, len, err = 0; + struct ubifs_debug_info *d = c->dbg; - c->old_zroot = *zroot; - - lnum = c->old_zroot.lnum; - offs = c->old_zroot.offs; - len = c->old_zroot.len; + d->old_zroot = *zroot; + lnum = d->old_zroot.lnum; + offs = d->old_zroot.offs; + len = d->old_zroot.len; idx = kmalloc(c->max_idx_node_sz, GFP_NOFS); if (!idx) @@ -485,8 +485,8 @@ int dbg_old_index_check_init(struct ubifs_info *c, struct ubifs_zbranch *zroot) if (err) goto out; - c->old_zroot_level = le16_to_cpu(idx->level); - c->old_zroot_sqnum = le64_to_cpu(idx->ch.sqnum); + d->old_zroot_level = le16_to_cpu(idx->level); + d->old_zroot_sqnum = le64_to_cpu(idx->ch.sqnum); out: kfree(idx); return err; @@ -509,6 +509,7 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot) { int lnum, offs, len, err = 0, uninitialized_var(last_level), child_cnt; int first = 1, iip; + struct ubifs_debug_info *d = c->dbg; union ubifs_key lower_key, upper_key, l_key, u_key; unsigned long long uninitialized_var(last_sqnum); struct ubifs_idx_node *idx; @@ -525,9 +526,9 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot) UBIFS_IDX_NODE_SZ; /* Start at the old zroot */ - lnum = c->old_zroot.lnum; - offs = c->old_zroot.offs; - len = c->old_zroot.len; + lnum = d->old_zroot.lnum; + offs = d->old_zroot.offs; + len = d->old_zroot.len; iip = 0; /* @@ -560,11 +561,11 @@ int dbg_check_old_index(struct ubifs_info *c, struct ubifs_zbranch *zroot) if (first) { first = 0; /* Check root level and sqnum */ - if (le16_to_cpu(idx->level) != c->old_zroot_level) { + if (le16_to_cpu(idx->level) != d->old_zroot_level) { err = 2; goto out_dump; } - if (le64_to_cpu(idx->ch.sqnum) != c->old_zroot_sqnum) { + if (le64_to_cpu(idx->ch.sqnum) != d->old_zroot_sqnum) { err = 3; goto out_dump; } diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 510ffa0bbda..0332a856a08 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -705,7 +705,7 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum) printk(KERN_DEBUG "(pid %d) Dumping LEB %d\n", current->pid, lnum); - sleb = ubifs_scan(c, lnum, 0, c->dbg_buf); + sleb = ubifs_scan(c, lnum, 0, c->dbg->buf); if (IS_ERR(sleb)) { ubifs_err("scan error %d", (int)PTR_ERR(sleb)); return; @@ -2097,7 +2097,7 @@ static int simple_rand(void) return (next >> 16) & 32767; } -void dbg_failure_mode_registration(struct ubifs_info *c) +static void failure_mode_init(struct ubifs_info *c) { struct failure_mode_info *fmi; @@ -2112,7 +2112,7 @@ void dbg_failure_mode_registration(struct ubifs_info *c) spin_unlock(&fmi_lock); } -void dbg_failure_mode_deregistration(struct ubifs_info *c) +static void failure_mode_exit(struct ubifs_info *c) { struct failure_mode_info *fmi, *tmp; @@ -2146,42 +2146,44 @@ static int in_failure_mode(struct ubi_volume_desc *desc) struct ubifs_info *c = dbg_find_info(desc); if (c && dbg_failure_mode) - return c->failure_mode; + return c->dbg->failure_mode; return 0; } static int do_fail(struct ubi_volume_desc *desc, int lnum, int write) { struct ubifs_info *c = dbg_find_info(desc); + struct ubifs_debug_info *d; if (!c || !dbg_failure_mode) return 0; - if (c->failure_mode) + d = c->dbg; + if (d->failure_mode) return 1; - if (!c->fail_cnt) { + if (!d->fail_cnt) { /* First call - decide delay to failure */ if (chance(1, 2)) { unsigned int delay = 1 << (simple_rand() >> 11); if (chance(1, 2)) { - c->fail_delay = 1; - c->fail_timeout = jiffies + + d->fail_delay = 1; + d->fail_timeout = jiffies + msecs_to_jiffies(delay); dbg_rcvry("failing after %ums", delay); } else { - c->fail_delay = 2; - c->fail_cnt_max = delay; + d->fail_delay = 2; + d->fail_cnt_max = delay; dbg_rcvry("failing after %u calls", delay); } } - c->fail_cnt += 1; + d->fail_cnt += 1; } /* Determine if failure delay has expired */ - if (c->fail_delay == 1) { - if (time_before(jiffies, c->fail_timeout)) + if (d->fail_delay == 1) { + if (time_before(jiffies, d->fail_timeout)) return 0; - } else if (c->fail_delay == 2) - if (c->fail_cnt++ < c->fail_cnt_max) + } else if (d->fail_delay == 2) + if (d->fail_cnt++ < d->fail_cnt_max) return 0; if (lnum == UBIFS_SB_LNUM) { if (write) { @@ -2239,7 +2241,7 @@ static int do_fail(struct ubi_volume_desc *desc, int lnum, int write) dbg_rcvry("failing in bud LEB %d commit not running", lnum); } ubifs_err("*** SETTING FAILURE MODE ON (LEB %d) ***", lnum); - c->failure_mode = 1; + d->failure_mode = 1; dump_stack(); return 1; } @@ -2344,4 +2346,41 @@ int dbg_leb_map(struct ubi_volume_desc *desc, int lnum, int dtype) return 0; } +/** + * ubifs_debugging_init - initialize UBIFS debugging. + * @c: UBIFS file-system description object + * + * This function initializes debugging-related data for the file system. + * Returns zero in case of success and a negative error code in case of + * failure. + */ +int ubifs_debugging_init(struct ubifs_info *c) +{ + c->dbg = kzalloc(sizeof(struct ubifs_debug_info), GFP_KERNEL); + if (!c->dbg) + return -ENOMEM; + + c->dbg->buf = vmalloc(c->leb_size); + if (!c->dbg->buf) + goto out; + + failure_mode_init(c); + return 0; + +out: + kfree(c->dbg); + return -ENOMEM; +} + +/** + * ubifs_debugging_exit - free debugging data. + * @c: UBIFS file-system description object + */ +void ubifs_debugging_exit(struct ubifs_info *c) +{ + failure_mode_exit(c); + vfree(c->dbg->buf); + kfree(c->dbg); +} + #endif /* CONFIG_UBIFS_FS_DEBUG */ diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h index 33d6b95071e..d6ea1362d56 100644 --- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -25,7 +25,43 @@ #ifdef CONFIG_UBIFS_FS_DEBUG -#define UBIFS_DBG(op) op +/** + * ubifs_debug_info - per-FS debugging information. + * @buf: a buffer of LEB size, used for various purposes + * @old_zroot: old index root - used by 'dbg_check_old_index()' + * @old_zroot_level: old index root level - used by 'dbg_check_old_index()' + * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()' + * @failure_mode: failure mode for recovery testing + * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls + * @fail_timeout: time in jiffies when delay of failure mode expires + * @fail_cnt: current number of calls to failure mode I/O functions + * @fail_cnt_max: number of calls by which to delay failure mode + * @chk_lpt_sz: used by LPT tree size checker + * @chk_lpt_sz2: used by LPT tree size checker + * @chk_lpt_wastage: used by LPT tree size checker + * @chk_lpt_lebs: used by LPT tree size checker + * @new_nhead_offs: used by LPT tree size checker + * @new_ihead_lnum: used by debugging to check ihead_lnum + * @new_ihead_offs: used by debugging to check ihead_offs + */ +struct ubifs_debug_info { + void *buf; + struct ubifs_zbranch old_zroot; + int old_zroot_level; + unsigned long long old_zroot_sqnum; + int failure_mode; + int fail_delay; + unsigned long fail_timeout; + unsigned int fail_cnt; + unsigned int fail_cnt_max; + long long chk_lpt_sz; + long long chk_lpt_sz2; + long long chk_lpt_wastage; + int chk_lpt_lebs; + int new_nhead_offs; + int new_ihead_lnum; + int new_ihead_offs; +}; #define ubifs_assert(expr) do { \ if (unlikely(!(expr))) { \ @@ -211,6 +247,9 @@ extern unsigned int ubifs_msg_flags; extern unsigned int ubifs_chk_flags; extern unsigned int ubifs_tst_flags; +int ubifs_debugging_init(struct ubifs_info *c); +void ubifs_debugging_exit(struct ubifs_info *c); + /* Dump functions */ const char *dbg_ntype(int type); @@ -274,9 +313,6 @@ int dbg_force_in_the_gaps(void); #define dbg_failure_mode (ubifs_tst_flags & UBIFS_TST_RCVRY) -void dbg_failure_mode_registration(struct ubifs_info *c); -void dbg_failure_mode_deregistration(struct ubifs_info *c); - #ifndef UBIFS_DBG_PRESERVE_UBI #define ubi_leb_read dbg_leb_read @@ -320,8 +356,6 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum, #else /* !CONFIG_UBIFS_FS_DEBUG */ -#define UBIFS_DBG(op) - /* Use "if (0)" to make compiler check arguments even if debugging is off */ #define ubifs_assert(expr) do { \ if (0 && (expr)) \ @@ -360,6 +394,9 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum, #define DBGKEY(key) ((char *)(key)) #define DBGKEY1(key) ((char *)(key)) +#define ubifs_debugging_init(c) 0 +#define ubifs_debugging_exit(c) ({}) + #define dbg_ntype(type) "" #define dbg_cstate(cmt_state) "" #define dbg_get_key_dump(c, key) ({}) @@ -396,8 +433,6 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum, #define dbg_force_in_the_gaps_enabled 0 #define dbg_force_in_the_gaps() 0 #define dbg_failure_mode 0 -#define dbg_failure_mode_registration(c) ({}) -#define dbg_failure_mode_deregistration(c) ({}) #endif /* !CONFIG_UBIFS_FS_DEBUG */ diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c index f27176e9b70..10ba663eb32 100644 --- a/fs/ubifs/lprops.c +++ b/fs/ubifs/lprops.c @@ -1088,7 +1088,7 @@ static int scan_check_cb(struct ubifs_info *c, } } - sleb = ubifs_scan(c, lnum, 0, c->dbg_buf); + sleb = ubifs_scan(c, lnum, 0, c->dbg->buf); if (IS_ERR(sleb)) { /* * After an unclean unmount, empty and freeable LEBs diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index a41434b4278..1aefab9f0b5 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -1602,7 +1602,7 @@ static int dbg_check_ltab_lnum(struct ubifs_info *c, int lnum) { int err, len = c->leb_size, dirty = 0, node_type, node_num, node_len; int ret; - void *buf = c->dbg_buf; + void *buf = c->dbg->buf; dbg_lp("LEB %d", lnum); err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size); @@ -1731,15 +1731,16 @@ int dbg_chk_lpt_free_spc(struct ubifs_info *c) */ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) { + struct ubifs_debug_info *d = c->dbg; long long chk_lpt_sz, lpt_sz; int err = 0; switch (action) { case 0: - c->chk_lpt_sz = 0; - c->chk_lpt_sz2 = 0; - c->chk_lpt_lebs = 0; - c->chk_lpt_wastage = 0; + d->chk_lpt_sz = 0; + d->chk_lpt_sz2 = 0; + d->chk_lpt_lebs = 0; + d->chk_lpt_wastage = 0; if (c->dirty_pn_cnt > c->pnode_cnt) { dbg_err("dirty pnodes %d exceed max %d", c->dirty_pn_cnt, c->pnode_cnt); @@ -1752,35 +1753,35 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) } return err; case 1: - c->chk_lpt_sz += len; + d->chk_lpt_sz += len; return 0; case 2: - c->chk_lpt_sz += len; - c->chk_lpt_wastage += len; - c->chk_lpt_lebs += 1; + d->chk_lpt_sz += len; + d->chk_lpt_wastage += len; + d->chk_lpt_lebs += 1; return 0; case 3: chk_lpt_sz = c->leb_size; - chk_lpt_sz *= c->chk_lpt_lebs; + chk_lpt_sz *= d->chk_lpt_lebs; chk_lpt_sz += len - c->nhead_offs; - if (c->chk_lpt_sz != chk_lpt_sz) { + if (d->chk_lpt_sz != chk_lpt_sz) { dbg_err("LPT wrote %lld but space used was %lld", - c->chk_lpt_sz, chk_lpt_sz); + d->chk_lpt_sz, chk_lpt_sz); err = -EINVAL; } - if (c->chk_lpt_sz > c->lpt_sz) { + if (d->chk_lpt_sz > c->lpt_sz) { dbg_err("LPT wrote %lld but lpt_sz is %lld", - c->chk_lpt_sz, c->lpt_sz); + d->chk_lpt_sz, c->lpt_sz); err = -EINVAL; } - if (c->chk_lpt_sz2 && c->chk_lpt_sz != c->chk_lpt_sz2) { + if (d->chk_lpt_sz2 && d->chk_lpt_sz != d->chk_lpt_sz2) { dbg_err("LPT layout size %lld but wrote %lld", - c->chk_lpt_sz, c->chk_lpt_sz2); + d->chk_lpt_sz, d->chk_lpt_sz2); err = -EINVAL; } - if (c->chk_lpt_sz2 && c->new_nhead_offs != len) { + if (d->chk_lpt_sz2 && d->new_nhead_offs != len) { dbg_err("LPT new nhead offs: expected %d was %d", - c->new_nhead_offs, len); + d->new_nhead_offs, len); err = -EINVAL; } lpt_sz = (long long)c->pnode_cnt * c->pnode_sz; @@ -1788,22 +1789,22 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) lpt_sz += c->ltab_sz; if (c->big_lpt) lpt_sz += c->lsave_sz; - if (c->chk_lpt_sz - c->chk_lpt_wastage > lpt_sz) { + if (d->chk_lpt_sz - d->chk_lpt_wastage > lpt_sz) { dbg_err("LPT chk_lpt_sz %lld + waste %lld exceeds %lld", - c->chk_lpt_sz, c->chk_lpt_wastage, lpt_sz); + d->chk_lpt_sz, d->chk_lpt_wastage, lpt_sz); err = -EINVAL; } if (err) dbg_dump_lpt_info(c); - c->chk_lpt_sz2 = c->chk_lpt_sz; - c->chk_lpt_sz = 0; - c->chk_lpt_wastage = 0; - c->chk_lpt_lebs = 0; - c->new_nhead_offs = len; + d->chk_lpt_sz2 = d->chk_lpt_sz; + d->chk_lpt_sz = 0; + d->chk_lpt_wastage = 0; + d->chk_lpt_lebs = 0; + d->new_nhead_offs = len; return err; case 4: - c->chk_lpt_sz += len; - c->chk_lpt_wastage += len; + d->chk_lpt_sz += len; + d->chk_lpt_wastage += len; return 0; default: return -EINVAL; diff --git a/fs/ubifs/orphan.c b/fs/ubifs/orphan.c index 9bd5a43d452..9e6f403f170 100644 --- a/fs/ubifs/orphan.c +++ b/fs/ubifs/orphan.c @@ -899,7 +899,7 @@ static int dbg_scan_orphans(struct ubifs_info *c, struct check_info *ci) for (lnum = c->orph_first; lnum <= c->orph_last; lnum++) { struct ubifs_scan_leb *sleb; - sleb = ubifs_scan(c, lnum, 0, c->dbg_buf); + sleb = ubifs_scan(c, lnum, 0, c->dbg->buf); if (IS_ERR(sleb)) { err = PTR_ERR(sleb); break; diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index fc81022cc26..ad44822059c 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1069,11 +1069,9 @@ static int mount_ubifs(struct ubifs_info *c) if (err) return err; -#ifdef CONFIG_UBIFS_FS_DEBUG - c->dbg_buf = vmalloc(c->leb_size); - if (!c->dbg_buf) - return -ENOMEM; -#endif + err = ubifs_debugging_init(c); + if (err) + return err; err = check_volume_empty(c); if (err) @@ -1139,18 +1137,16 @@ static int mount_ubifs(struct ubifs_info *c) goto out_free; } - dbg_failure_mode_registration(c); - err = init_constants_late(c); if (err) - goto out_dereg; + goto out_free; sz = ALIGN(c->max_idx_node_sz, c->min_io_size); sz = ALIGN(sz + c->max_idx_node_sz, c->min_io_size); c->cbuf = kmalloc(sz, GFP_NOFS); if (!c->cbuf) { err = -ENOMEM; - goto out_dereg; + goto out_free; } sprintf(c->bgt_name, BGT_NAME_PATTERN, c->vi.ubi_num, c->vi.vol_id); @@ -1350,14 +1346,12 @@ out_wbufs: free_wbufs(c); out_cbuf: kfree(c->cbuf); -out_dereg: - dbg_failure_mode_deregistration(c); out_free: kfree(c->bu.buf); vfree(c->ileb_buf); vfree(c->sbuf); kfree(c->bottom_up_buf); - UBIFS_DBG(vfree(c->dbg_buf)); + ubifs_debugging_exit(c); return err; } @@ -1394,8 +1388,7 @@ static void ubifs_umount(struct ubifs_info *c) vfree(c->ileb_buf); vfree(c->sbuf); kfree(c->bottom_up_buf); - UBIFS_DBG(vfree(c->dbg_buf)); - dbg_failure_mode_deregistration(c); + ubifs_debugging_exit(c); } /** @@ -1879,7 +1872,6 @@ static int ubifs_fill_super(struct super_block *sb, void *data, int silent) goto out_iput; mutex_unlock(&c->umount_mutex); - return 0; out_iput: diff --git a/fs/ubifs/tnc_commit.c b/fs/ubifs/tnc_commit.c index 8ac76b1c2d5..3c0af452887 100644 --- a/fs/ubifs/tnc_commit.c +++ b/fs/ubifs/tnc_commit.c @@ -553,8 +553,8 @@ static int layout_in_empty_space(struct ubifs_info *c) } #ifdef CONFIG_UBIFS_FS_DEBUG - c->new_ihead_lnum = lnum; - c->new_ihead_offs = buf_offs; + c->dbg->new_ihead_lnum = lnum; + c->dbg->new_ihead_offs = buf_offs; #endif return 0; @@ -1002,7 +1002,8 @@ static int write_index(struct ubifs_info *c) } #ifdef CONFIG_UBIFS_FS_DEBUG - if (lnum != c->new_ihead_lnum || buf_offs != c->new_ihead_offs) { + if (lnum != c->dbg->new_ihead_lnum || + buf_offs != c->dbg->new_ihead_offs) { ubifs_err("inconsistent ihead"); return -EINVAL; } diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 16840e099ef..7e090a5e2bf 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -910,6 +910,8 @@ struct ubifs_mount_opts { unsigned int compr_type:2; }; +struct ubifs_debug_info; + /** * struct ubifs_info - UBIFS file-system description data structure * (per-superblock). @@ -972,8 +974,6 @@ struct ubifs_mount_opts { * @ileb_nxt: next pre-allocated index LEBs * @old_idx: tree of index nodes obsoleted since the last commit start * @bottom_up_buf: a buffer which is used by 'dirty_cow_bottom_up()' in tnc.c - * @new_ihead_lnum: used by debugging to check ihead_lnum - * @new_ihead_offs: used by debugging to check ihead_offs * * @mst_node: master node * @mst_offs: offset of valid master node @@ -1157,15 +1157,7 @@ struct ubifs_mount_opts { * @always_chk_crc: always check CRCs (while mounting and remounting rw) * @mount_opts: UBIFS-specific mount options * - * @dbg_buf: a buffer of LEB size used for debugging purposes - * @old_zroot: old index root - used by 'dbg_check_old_index()' - * @old_zroot_level: old index root level - used by 'dbg_check_old_index()' - * @old_zroot_sqnum: old index root sqnum - used by 'dbg_check_old_index()' - * @failure_mode: failure mode for recovery testing - * @fail_delay: 0=>don't delay, 1=>delay a time, 2=>delay a number of calls - * @fail_timeout: time in jiffies when delay of failure mode expires - * @fail_cnt: current number of calls to failure mode I/O functions - * @fail_cnt_max: number of calls by which to delay failure mode + * @dbg: debugging-related information */ struct ubifs_info { struct super_block *vfs_sb; @@ -1221,10 +1213,6 @@ struct ubifs_info { int ileb_nxt; struct rb_root old_idx; int *bottom_up_buf; -#ifdef CONFIG_UBIFS_FS_DEBUG - int new_ihead_lnum; - int new_ihead_offs; -#endif struct ubifs_mst_node *mst_node; int mst_offs; @@ -1399,21 +1387,7 @@ struct ubifs_info { struct ubifs_mount_opts mount_opts; #ifdef CONFIG_UBIFS_FS_DEBUG - void *dbg_buf; - struct ubifs_zbranch old_zroot; - int old_zroot_level; - unsigned long long old_zroot_sqnum; - int failure_mode; - int fail_delay; - unsigned long fail_timeout; - unsigned int fail_cnt; - unsigned int fail_cnt_max; - long long chk_lpt_sz; - long long chk_lpt_sz2; - long long chk_lpt_wastage; - int chk_lpt_lebs; - int new_nhead_lnum; - int new_nhead_offs; + struct ubifs_debug_info *dbg; #endif }; -- cgit v1.2.3-70-g09d2 From 552ff3179d1e93a3e982357544c059f3e9a5516e Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Thu, 23 Oct 2008 11:49:28 +0300 Subject: UBIFS: add debugfs support We need to have a possibility to see various UBIFS variables and ask UBIFS to dump various information. Debugfs is what we need. Signed-off-by: Artem Bityutskiy --- fs/ubifs/debug.c | 173 +++++++++++++++++++++++++++++++++++++++++++++++++------ fs/ubifs/debug.h | 27 ++++++++- fs/ubifs/super.c | 12 ++++ fs/ubifs/ubifs.h | 1 + 4 files changed, 193 insertions(+), 20 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 0332a856a08..56842772c80 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -32,6 +32,7 @@ #include "ubifs.h" #include #include +#include #ifdef CONFIG_UBIFS_FS_DEBUG @@ -988,22 +989,20 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1, err = 1; key_read(c, &dent1->key, &key); if (keys_cmp(c, &zbr1->key, &key)) { - dbg_err("1st entry at %d:%d has key %s", zbr1->lnum, - zbr1->offs, DBGKEY(&key)); - dbg_err("but it should have key %s according to tnc", - DBGKEY(&zbr1->key)); - dbg_dump_node(c, dent1); - goto out_free; + ubifs_err("1st entry at %d:%d has key %s", zbr1->lnum, + zbr1->offs, DBGKEY(&key)); + ubifs_err("but it should have key %s according to tnc", + DBGKEY(&zbr1->key)); dbg_dump_node(c, dent1); + goto out_free; } key_read(c, &dent2->key, &key); if (keys_cmp(c, &zbr2->key, &key)) { - dbg_err("2nd entry at %d:%d has key %s", zbr1->lnum, - zbr1->offs, DBGKEY(&key)); - dbg_err("but it should have key %s according to tnc", - DBGKEY(&zbr2->key)); - dbg_dump_node(c, dent2); - goto out_free; + ubifs_err("2nd entry at %d:%d has key %s", zbr1->lnum, + zbr1->offs, DBGKEY(&key)); + ubifs_err("but it should have key %s according to tnc", + DBGKEY(&zbr2->key)); dbg_dump_node(c, dent2); + goto out_free; } nlen1 = le16_to_cpu(dent1->nlen); @@ -1015,14 +1014,14 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1, goto out_free; } if (cmp == 0 && nlen1 == nlen2) - dbg_err("2 xent/dent nodes with the same name"); + ubifs_err("2 xent/dent nodes with the same name"); else - dbg_err("bad order of colliding key %s", + ubifs_err("bad order of colliding key %s", DBGKEY(&key)); - dbg_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs); + ubifs_msg("first node at %d:%d\n", zbr1->lnum, zbr1->offs); dbg_dump_node(c, dent1); - dbg_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs); + ubifs_msg("second node at %d:%d\n", zbr2->lnum, zbr2->offs); dbg_dump_node(c, dent2); out_free: @@ -2103,7 +2102,7 @@ static void failure_mode_init(struct ubifs_info *c) fmi = kmalloc(sizeof(struct failure_mode_info), GFP_NOFS); if (!fmi) { - dbg_err("Failed to register failure mode - no memory"); + ubifs_err("Failed to register failure mode - no memory"); return; } fmi->c = c; @@ -2383,4 +2382,144 @@ void ubifs_debugging_exit(struct ubifs_info *c) kfree(c->dbg); } +/* + * Root directory for UBIFS stuff in debugfs. Contains sub-directories which + * contain the stuff specific to particular file-system mounts. + */ +static struct dentry *debugfs_rootdir; + +/** + * dbg_debugfs_init - initialize debugfs file-system. + * + * UBIFS uses debugfs file-system to expose various debugging knobs to + * user-space. This function creates "ubifs" directory in the debugfs + * file-system. Returns zero in case of success and a negative error code in + * case of failure. + */ +int dbg_debugfs_init(void) +{ + debugfs_rootdir = debugfs_create_dir("ubifs", NULL); + if (IS_ERR(debugfs_rootdir)) { + int err = PTR_ERR(debugfs_rootdir); + ubifs_err("cannot create \"ubifs\" debugfs directory, " + "error %d\n", err); + return err; + } + + return 0; +} + +/** + * dbg_debugfs_exit - remove the "ubifs" directory from debugfs file-system. + */ +void dbg_debugfs_exit(void) +{ + debugfs_remove(debugfs_rootdir); +} + +static int open_debugfs_file(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return 0; +} + +static ssize_t write_debugfs_file(struct file *file, const char __user *buf, + size_t count, loff_t *ppos) +{ + struct ubifs_info *c = file->private_data; + struct ubifs_debug_info *d = c->dbg; + + if (file->f_path.dentry == d->dump_lprops) + dbg_dump_lprops(c); + else if (file->f_path.dentry == d->dump_budg) { + spin_lock(&c->space_lock); + dbg_dump_budg(c); + spin_unlock(&c->space_lock); + } else if (file->f_path.dentry == d->dump_budg) { + mutex_lock(&c->tnc_mutex); + dbg_dump_tnc(c); + mutex_unlock(&c->tnc_mutex); + } else + return -EINVAL; + + *ppos += count; + return count; +} + +static const struct file_operations debugfs_fops = { + .open = open_debugfs_file, + .write = write_debugfs_file, + .owner = THIS_MODULE, +}; + +/** + * dbg_debugfs_init_fs - initialize debugfs for UBIFS instance. + * @c: UBIFS file-system description object + * + * This function creates all debugfs files for this instance of UBIFS. Returns + * zero in case of success and a negative error code in case of failure. + * + * Note, the only reason we have not merged this function with the + * 'ubifs_debugging_init()' function is because it is better to initialize + * debugfs interfaces at the very end of the mount process, and remove them at + * the very beginning of the mount process. + */ +int dbg_debugfs_init_fs(struct ubifs_info *c) +{ + int err; + const char *fname; + struct dentry *dent; + struct ubifs_debug_info *d = c->dbg; + + sprintf(d->debugfs_dir_name, "ubi%d_%d", c->vi.ubi_num, c->vi.vol_id); + d->debugfs_dir = debugfs_create_dir(d->debugfs_dir_name, + debugfs_rootdir); + if (IS_ERR(d->debugfs_dir)) { + err = PTR_ERR(d->debugfs_dir); + ubifs_err("cannot create \"%s\" debugfs directory, error %d\n", + d->debugfs_dir_name, err); + goto out; + } + + fname = "dump_lprops"; + dent = debugfs_create_file(fname, S_IWUGO, d->debugfs_dir, c, + &debugfs_fops); + if (IS_ERR(dent)) + goto out_remove; + d->dump_lprops = dent; + + fname = "dump_budg"; + dent = debugfs_create_file(fname, S_IWUGO, d->debugfs_dir, c, + &debugfs_fops); + if (IS_ERR(dent)) + goto out_remove; + d->dump_budg = dent; + + fname = "dump_tnc"; + dent = debugfs_create_file(fname, S_IWUGO, d->debugfs_dir, c, + &debugfs_fops); + if (IS_ERR(dent)) + goto out_remove; + d->dump_tnc = dent; + + return 0; + +out_remove: + err = PTR_ERR(dent); + ubifs_err("cannot create \"%s\" debugfs directory, error %d\n", + fname, err); + debugfs_remove_recursive(d->debugfs_dir); +out: + return err; +} + +/** + * dbg_debugfs_exit_fs - remove all debugfs files. + * @c: UBIFS file-system description object + */ +void dbg_debugfs_exit_fs(struct ubifs_info *c) +{ + debugfs_remove_recursive(c->dbg->debugfs_dir); +} + #endif /* CONFIG_UBIFS_FS_DEBUG */ diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h index d6ea1362d56..a6b70f8aac9 100644 --- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -43,6 +43,13 @@ * @new_nhead_offs: used by LPT tree size checker * @new_ihead_lnum: used by debugging to check ihead_lnum * @new_ihead_offs: used by debugging to check ihead_offs + * + * debugfs_dir_name: name of debugfs directory containing this file-system's + * files + * debugfs_dir: direntry object of the file-system debugfs directory + * dump_lprops: "dump lprops" debugfs knob + * dump_budg: "dump budgeting information" debugfs knob + * dump_tnc: "dump TNC" debugfs knob */ struct ubifs_debug_info { void *buf; @@ -61,6 +68,12 @@ struct ubifs_debug_info { int new_nhead_offs; int new_ihead_lnum; int new_ihead_offs; + + char debugfs_dir_name[100]; + struct dentry *debugfs_dir; + struct dentry *dump_lprops; + struct dentry *dump_budg; + struct dentry *dump_tnc; }; #define ubifs_assert(expr) do { \ @@ -251,7 +264,6 @@ int ubifs_debugging_init(struct ubifs_info *c); void ubifs_debugging_exit(struct ubifs_info *c); /* Dump functions */ - const char *dbg_ntype(int type); const char *dbg_cstate(int cmt_state); const char *dbg_get_key_dump(const struct ubifs_info *c, @@ -274,7 +286,6 @@ void dbg_dump_tnc(struct ubifs_info *c); void dbg_dump_index(struct ubifs_info *c); /* Checking helper functions */ - typedef int (*dbg_leaf_callback)(struct ubifs_info *c, struct ubifs_zbranch *zbr, void *priv); typedef int (*dbg_znode_callback)(struct ubifs_info *c, @@ -354,6 +365,12 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum, return dbg_leb_change(desc, lnum, buf, len, UBI_UNKNOWN); } +/* Debugfs-related stuff */ +int dbg_debugfs_init(void); +void dbg_debugfs_exit(void); +int dbg_debugfs_init_fs(struct ubifs_info *c); +void dbg_debugfs_exit_fs(struct ubifs_info *c); + #else /* !CONFIG_UBIFS_FS_DEBUG */ /* Use "if (0)" to make compiler check arguments even if debugging is off */ @@ -434,6 +451,10 @@ static inline int dbg_change(struct ubi_volume_desc *desc, int lnum, #define dbg_force_in_the_gaps() 0 #define dbg_failure_mode 0 -#endif /* !CONFIG_UBIFS_FS_DEBUG */ +#define dbg_debugfs_init() 0 +#define dbg_debugfs_exit() +#define dbg_debugfs_init_fs(c) 0 +#define dbg_debugfs_exit_fs(c) 0 +#endif /* !CONFIG_UBIFS_FS_DEBUG */ #endif /* !__UBIFS_DEBUG_H__ */ diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index ad44822059c..2dbaa4fc2cb 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -1258,6 +1258,10 @@ static int mount_ubifs(struct ubifs_info *c) } } + err = dbg_debugfs_init_fs(c); + if (err) + goto out_infos; + err = dbg_check_filesystem(c); if (err) goto out_infos; @@ -1369,6 +1373,7 @@ static void ubifs_umount(struct ubifs_info *c) dbg_gen("un-mounting UBI device %d, volume %d", c->vi.ubi_num, c->vi.vol_id); + dbg_debugfs_exit_fs(c); spin_lock(&ubifs_infos_lock); list_del(&c->infos_list); spin_unlock(&ubifs_infos_lock); @@ -2078,12 +2083,18 @@ static int __init ubifs_init(void) register_shrinker(&ubifs_shrinker_info); err = ubifs_compressors_init(); + if (err) + goto out_shrinker; + + err = dbg_debugfs_init(); if (err) goto out_compr; return 0; out_compr: + ubifs_compressors_exit(); +out_shrinker: unregister_shrinker(&ubifs_shrinker_info); kmem_cache_destroy(ubifs_inode_slab); out_reg: @@ -2098,6 +2109,7 @@ static void __exit ubifs_exit(void) ubifs_assert(list_empty(&ubifs_infos)); ubifs_assert(atomic_long_read(&ubifs_clean_zn_cnt) == 0); + dbg_debugfs_exit(); ubifs_compressors_exit(); unregister_shrinker(&ubifs_shrinker_info); kmem_cache_destroy(ubifs_inode_slab); diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 7e090a5e2bf..4cf28e85de7 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1158,6 +1158,7 @@ struct ubifs_debug_info; * @mount_opts: UBIFS-specific mount options * * @dbg: debugging-related information + * @dfs: debugfs support-related information */ struct ubifs_info { struct super_block *vfs_sb; -- cgit v1.2.3-70-g09d2 From 2ba5f7ae8165b3f575dd3a7d8bb18f421fab8273 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 31 Oct 2008 17:32:30 +0200 Subject: UBIFS: introduce LPT dump function Signed-off-by: Artem Bityutskiy --- fs/ubifs/debug.c | 28 +++++++---- fs/ubifs/debug.h | 45 +++++++++-------- fs/ubifs/lpt.c | 27 ++++++----- fs/ubifs/lpt_commit.c | 131 ++++++++++++++++++++++++++++++++++++++++++++++++-- fs/ubifs/ubifs.h | 3 ++ 5 files changed, 186 insertions(+), 48 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 56842772c80..934db1855f0 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -646,7 +646,8 @@ void dbg_dump_lprops(struct ubifs_info *c) struct ubifs_lprops lp; struct ubifs_lp_stats lst; - printk(KERN_DEBUG "(pid %d) Dumping LEB properties\n", current->pid); + printk(KERN_DEBUG "(pid %d) start dumping LEB properties\n", + current->pid); ubifs_get_lp_stats(c, &lst); dbg_dump_lstats(&lst); @@ -657,6 +658,8 @@ void dbg_dump_lprops(struct ubifs_info *c) dbg_dump_lprop(c, &lp); } + printk(KERN_DEBUG "(pid %d) finish dumping LEB properties\n", + current->pid); } void dbg_dump_lpt_info(struct ubifs_info *c) @@ -664,6 +667,7 @@ void dbg_dump_lpt_info(struct ubifs_info *c) int i; spin_lock(&dbg_lock); + printk(KERN_DEBUG "(pid %d) dumping LPT information\n", current->pid); printk(KERN_DEBUG "\tlpt_sz: %lld\n", c->lpt_sz); printk(KERN_DEBUG "\tpnode_sz: %d\n", c->pnode_sz); printk(KERN_DEBUG "\tnnode_sz: %d\n", c->nnode_sz); @@ -704,8 +708,8 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum) if (dbg_failure_mode) return; - printk(KERN_DEBUG "(pid %d) Dumping LEB %d\n", current->pid, lnum); - + printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n", + current->pid, lnum); sleb = ubifs_scan(c, lnum, 0, c->dbg->buf); if (IS_ERR(sleb)) { ubifs_err("scan error %d", (int)PTR_ERR(sleb)); @@ -722,6 +726,8 @@ void dbg_dump_leb(const struct ubifs_info *c, int lnum) dbg_dump_node(c, snod->node); } + printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n", + current->pid, lnum); ubifs_scan_destroy(sleb); return; } @@ -769,7 +775,7 @@ void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat) { int i; - printk(KERN_DEBUG "(pid %d) Dumping heap cat %d (%d elements)\n", + printk(KERN_DEBUG "(pid %d) start dumping heap cat %d (%d elements)\n", current->pid, cat, heap->cnt); for (i = 0; i < heap->cnt; i++) { struct ubifs_lprops *lprops = heap->arr[i]; @@ -778,6 +784,7 @@ void dbg_dump_heap(struct ubifs_info *c, struct ubifs_lpt_heap *heap, int cat) "flags %d\n", i, lprops->lnum, lprops->hpos, lprops->free, lprops->dirty, lprops->flags); } + printk(KERN_DEBUG "(pid %d) finish dumping heap\n", current->pid); } void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, @@ -785,7 +792,7 @@ void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, { int i; - printk(KERN_DEBUG "(pid %d) Dumping pnode:\n", current->pid); + printk(KERN_DEBUG "(pid %d) dumping pnode:\n", current->pid); printk(KERN_DEBUG "\taddress %zx parent %zx cnext %zx\n", (size_t)pnode, (size_t)parent, (size_t)pnode->cnext); printk(KERN_DEBUG "\tflags %lu iip %d level %d num %d\n", @@ -804,7 +811,7 @@ void dbg_dump_tnc(struct ubifs_info *c) int level; printk(KERN_DEBUG "\n"); - printk(KERN_DEBUG "(pid %d) Dumping the TNC tree\n", current->pid); + printk(KERN_DEBUG "(pid %d) start dumping TNC tree\n", current->pid); znode = ubifs_tnc_levelorder_next(c->zroot.znode, NULL); level = znode->level; printk(KERN_DEBUG "== Level %d ==\n", level); @@ -816,8 +823,7 @@ void dbg_dump_tnc(struct ubifs_info *c) dbg_dump_znode(c, znode); znode = ubifs_tnc_levelorder_next(c->zroot.znode, znode); } - - printk(KERN_DEBUG "\n"); + printk(KERN_DEBUG "(pid %d) finish dumping TNC tree\n", current->pid); } static int dump_znode(struct ubifs_info *c, struct ubifs_znode *znode, @@ -992,7 +998,8 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1, ubifs_err("1st entry at %d:%d has key %s", zbr1->lnum, zbr1->offs, DBGKEY(&key)); ubifs_err("but it should have key %s according to tnc", - DBGKEY(&zbr1->key)); dbg_dump_node(c, dent1); + DBGKEY(&zbr1->key)); + dbg_dump_node(c, dent1); goto out_free; } @@ -1001,7 +1008,8 @@ static int dbg_check_key_order(struct ubifs_info *c, struct ubifs_zbranch *zbr1, ubifs_err("2nd entry at %d:%d has key %s", zbr1->lnum, zbr1->offs, DBGKEY(&key)); ubifs_err("but it should have key %s according to tnc", - DBGKEY(&zbr2->key)); dbg_dump_node(c, dent2); + DBGKEY(&zbr2->key)); + dbg_dump_node(c, dent2); goto out_free; } diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h index a6b70f8aac9..9820d6999f7 100644 --- a/fs/ubifs/debug.h +++ b/fs/ubifs/debug.h @@ -270,6 +270,8 @@ const char *dbg_get_key_dump(const struct ubifs_info *c, const union ubifs_key *key); void dbg_dump_inode(const struct ubifs_info *c, const struct inode *inode); void dbg_dump_node(const struct ubifs_info *c, const void *node); +void dbg_dump_lpt_node(const struct ubifs_info *c, void *node, int lnum, + int offs); void dbg_dump_budget_req(const struct ubifs_budget_req *req); void dbg_dump_lstats(const struct ubifs_lp_stats *lst); void dbg_dump_budg(struct ubifs_info *c); @@ -284,6 +286,7 @@ void dbg_dump_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, struct ubifs_nnode *parent, int iip); void dbg_dump_tnc(struct ubifs_info *c); void dbg_dump_index(struct ubifs_info *c); +void dbg_dump_lpt_lebs(const struct ubifs_info *c); /* Checking helper functions */ typedef int (*dbg_leaf_callback)(struct ubifs_info *c, @@ -411,26 +414,28 @@ void dbg_debugfs_exit_fs(struct ubifs_info *c); #define DBGKEY(key) ((char *)(key)) #define DBGKEY1(key) ((char *)(key)) -#define ubifs_debugging_init(c) 0 -#define ubifs_debugging_exit(c) ({}) - -#define dbg_ntype(type) "" -#define dbg_cstate(cmt_state) "" -#define dbg_get_key_dump(c, key) ({}) -#define dbg_dump_inode(c, inode) ({}) -#define dbg_dump_node(c, node) ({}) -#define dbg_dump_budget_req(req) ({}) -#define dbg_dump_lstats(lst) ({}) -#define dbg_dump_budg(c) ({}) -#define dbg_dump_lprop(c, lp) ({}) -#define dbg_dump_lprops(c) ({}) -#define dbg_dump_lpt_info(c) ({}) -#define dbg_dump_leb(c, lnum) ({}) -#define dbg_dump_znode(c, znode) ({}) -#define dbg_dump_heap(c, heap, cat) ({}) -#define dbg_dump_pnode(c, pnode, parent, iip) ({}) -#define dbg_dump_tnc(c) ({}) -#define dbg_dump_index(c) ({}) +#define ubifs_debugging_init(c) 0 +#define ubifs_debugging_exit(c) ({}) + +#define dbg_ntype(type) "" +#define dbg_cstate(cmt_state) "" +#define dbg_get_key_dump(c, key) ({}) +#define dbg_dump_inode(c, inode) ({}) +#define dbg_dump_node(c, node) ({}) +#define dbg_dump_lpt_node(c, node, lnum, offs) ({}) +#define dbg_dump_budget_req(req) ({}) +#define dbg_dump_lstats(lst) ({}) +#define dbg_dump_budg(c) ({}) +#define dbg_dump_lprop(c, lp) ({}) +#define dbg_dump_lprops(c) ({}) +#define dbg_dump_lpt_info(c) ({}) +#define dbg_dump_leb(c, lnum) ({}) +#define dbg_dump_znode(c, znode) ({}) +#define dbg_dump_heap(c, heap, cat) ({}) +#define dbg_dump_pnode(c, pnode, parent, iip) ({}) +#define dbg_dump_tnc(c) ({}) +#define dbg_dump_index(c) ({}) +#define dbg_dump_lpt_lebs(c) ({}) #define dbg_walk_index(c, leaf_cb, znode_cb, priv) 0 #define dbg_old_index_check_init(c, zroot) 0 diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c index 93c181c742f..6d914160ec5 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -557,7 +557,7 @@ static int calc_nnode_num(int row, int col) * This function calculates and returns the nnode number based on the parent's * nnode number and the index in parent. */ -static int calc_nnode_num_from_parent(struct ubifs_info *c, +static int calc_nnode_num_from_parent(const struct ubifs_info *c, struct ubifs_nnode *parent, int iip) { int num, shft; @@ -582,7 +582,7 @@ static int calc_nnode_num_from_parent(struct ubifs_info *c, * This function calculates and returns the pnode number based on the parent's * nnode number and the index in parent. */ -static int calc_pnode_num_from_parent(struct ubifs_info *c, +static int calc_pnode_num_from_parent(const struct ubifs_info *c, struct ubifs_nnode *parent, int iip) { int i, n = c->lpt_hght - 1, pnum = parent->num, num = 0; @@ -965,7 +965,7 @@ static int check_lpt_type(uint8_t **addr, int *pos, int type) * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_pnode(struct ubifs_info *c, void *buf, +static int unpack_pnode(const struct ubifs_info *c, void *buf, struct ubifs_pnode *pnode) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; @@ -995,15 +995,15 @@ static int unpack_pnode(struct ubifs_info *c, void *buf, } /** - * unpack_nnode - unpack a nnode. + * ubifs_unpack_nnode - unpack a nnode. * @c: UBIFS file-system description object * @buf: buffer containing packed nnode to unpack * @nnode: nnode structure to fill * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_nnode(struct ubifs_info *c, void *buf, - struct ubifs_nnode *nnode) +int ubifs_unpack_nnode(const struct ubifs_info *c, void *buf, + struct ubifs_nnode *nnode) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int i, pos = 0, err; @@ -1035,7 +1035,7 @@ static int unpack_nnode(struct ubifs_info *c, void *buf, * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_ltab(struct ubifs_info *c, void *buf) +static int unpack_ltab(const struct ubifs_info *c, void *buf) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int i, pos = 0, err; @@ -1067,7 +1067,7 @@ static int unpack_ltab(struct ubifs_info *c, void *buf) * * This function returns %0 on success and a negative error code on failure. */ -static int unpack_lsave(struct ubifs_info *c, void *buf) +static int unpack_lsave(const struct ubifs_info *c, void *buf) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int i, pos = 0, err; @@ -1095,7 +1095,7 @@ static int unpack_lsave(struct ubifs_info *c, void *buf) * * This function returns %0 on success and a negative error code on failure. */ -static int validate_nnode(struct ubifs_info *c, struct ubifs_nnode *nnode, +static int validate_nnode(const struct ubifs_info *c, struct ubifs_nnode *nnode, struct ubifs_nnode *parent, int iip) { int i, lvl, max_offs; @@ -1139,7 +1139,7 @@ static int validate_nnode(struct ubifs_info *c, struct ubifs_nnode *nnode, * * This function returns %0 on success and a negative error code on failure. */ -static int validate_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, +static int validate_pnode(const struct ubifs_info *c, struct ubifs_pnode *pnode, struct ubifs_nnode *parent, int iip) { int i; @@ -1173,7 +1173,8 @@ static int validate_pnode(struct ubifs_info *c, struct ubifs_pnode *pnode, * This function calculates the LEB numbers for the LEB properties it contains * based on the pnode number. */ -static void set_pnode_lnum(struct ubifs_info *c, struct ubifs_pnode *pnode) +static void set_pnode_lnum(const struct ubifs_info *c, + struct ubifs_pnode *pnode) { int i, lnum; @@ -1226,7 +1227,7 @@ int ubifs_read_nnode(struct ubifs_info *c, struct ubifs_nnode *parent, int iip) err = ubi_read(c->ubi, lnum, buf, offs, c->nnode_sz); if (err) goto out; - err = unpack_nnode(c, buf, nnode); + err = ubifs_unpack_nnode(c, buf, nnode); if (err) goto out; } @@ -1815,7 +1816,7 @@ static struct ubifs_nnode *scan_get_nnode(struct ubifs_info *c, c->nnode_sz); if (err) return ERR_PTR(err); - err = unpack_nnode(c, buf, nnode); + err = ubifs_unpack_nnode(c, buf, nnode); if (err) return ERR_PTR(err); } diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index c5c07f9cd22..da60b5a0fab 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -320,6 +320,7 @@ no_space: dbg_err("LPT out of space at LEB %d:%d needing %d, done_ltab %d, " "done_lsave %d", lnum, offs, len, done_ltab, done_lsave); dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); return err; } @@ -549,6 +550,7 @@ no_space: dbg_err("LPT out of space mismatch at LEB %d:%d needing %d, done_ltab " "%d, done_lsave %d", lnum, offs, len, done_ltab, done_lsave); dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); return err; } @@ -1027,7 +1029,7 @@ static int make_node_dirty(struct ubifs_info *c, int node_type, int node_num, * @c: UBIFS file-system description object * @node_type: LPT node type */ -static int get_lpt_node_len(struct ubifs_info *c, int node_type) +static int get_lpt_node_len(const struct ubifs_info *c, int node_type) { switch (node_type) { case UBIFS_LPT_NNODE: @@ -1048,7 +1050,7 @@ static int get_lpt_node_len(struct ubifs_info *c, int node_type) * @buf: buffer * @len: length of buffer */ -static int get_pad_len(struct ubifs_info *c, uint8_t *buf, int len) +static int get_pad_len(const struct ubifs_info *c, uint8_t *buf, int len) { int offs, pad_len; @@ -1065,7 +1067,8 @@ static int get_pad_len(struct ubifs_info *c, uint8_t *buf, int len) * @buf: buffer * @node_num: node number is returned here */ -static int get_lpt_node_type(struct ubifs_info *c, uint8_t *buf, int *node_num) +static int get_lpt_node_type(const struct ubifs_info *c, uint8_t *buf, + int *node_num) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int pos = 0, node_type; @@ -1083,7 +1086,7 @@ static int get_lpt_node_type(struct ubifs_info *c, uint8_t *buf, int *node_num) * * This function returns %1 if the buffer contains a node or %0 if it does not. */ -static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len) +static int is_a_node(const struct ubifs_info *c, uint8_t *buf, int len) { uint8_t *addr = buf + UBIFS_LPT_CRC_BYTES; int pos = 0, node_type, node_len; @@ -1107,7 +1110,6 @@ static int is_a_node(struct ubifs_info *c, uint8_t *buf, int len) return 1; } - /** * lpt_gc_lnum - garbage collect a LPT LEB. * @c: UBIFS file-system description object @@ -1724,6 +1726,7 @@ int dbg_chk_lpt_free_spc(struct ubifs_info *c) dbg_err("LPT space error: free %lld lpt_sz %lld", free, c->lpt_sz); dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); return -EINVAL; } @@ -1808,6 +1811,7 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) } if (err) { dbg_dump_lpt_info(c); + dbg_dump_lpt_lebs(c); dump_stack(); } d->chk_lpt_sz2 = d->chk_lpt_sz; @@ -1825,4 +1829,121 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) } } +/** + * dbg_dump_lpt_leb - dump an LPT LEB. + * @c: UBIFS file-system description object + * @lnum: LEB number to dump + * + * This function dumps an LEB from LPT area. Nodes in this area are very + * different to nodes in the main area (e.g., they do not have common headers, + * they do not have 8-byte alignments, etc), so we have a separate function to + * dump LPT area LEBs. Note, LPT has to be locked by the coller. + */ +static void dump_lpt_leb(const struct ubifs_info *c, int lnum) +{ + int err, len = c->leb_size, node_type, node_num, node_len, offs; + void *buf = c->dbg->buf; + + printk(KERN_DEBUG "(pid %d) start dumping LEB %d\n", + current->pid, lnum); + err = ubi_read(c->ubi, lnum, buf, 0, c->leb_size); + if (err) { + ubifs_err("cannot read LEB %d, error %d", lnum, err); + return; + } + while (1) { + offs = c->leb_size - len; + if (!is_a_node(c, buf, len)) { + int pad_len; + + pad_len = get_pad_len(c, buf, len); + if (pad_len) { + printk(KERN_DEBUG "LEB %d:%d, pad %d bytes\n", + lnum, offs, pad_len); + buf += pad_len; + len -= pad_len; + continue; + } + if (len) + printk(KERN_DEBUG "LEB %d:%d, free %d bytes\n", + lnum, offs, len); + break; + } + + node_type = get_lpt_node_type(c, buf, &node_num); + switch (node_type) { + case UBIFS_LPT_PNODE: + { + node_len = c->pnode_sz; + if (c->big_lpt) + printk(KERN_DEBUG "LEB %d:%d, pnode num %d\n", + lnum, offs, node_num); + else + printk(KERN_DEBUG "LEB %d:%d, pnode\n", + lnum, offs); + break; + } + case UBIFS_LPT_NNODE: + { + int i; + struct ubifs_nnode nnode; + + node_len = c->nnode_sz; + if (c->big_lpt) + printk(KERN_DEBUG "LEB %d:%d, nnode num %d, ", + lnum, offs, node_num); + else + printk(KERN_DEBUG "LEB %d:%d, nnode, ", + lnum, offs); + err = ubifs_unpack_nnode(c, buf, &nnode); + for (i = 0; i < UBIFS_LPT_FANOUT; i++) { + printk("%d:%d", nnode.nbranch[i].lnum, + nnode.nbranch[i].offs); + if (i != UBIFS_LPT_FANOUT - 1) + printk(", "); + } + printk("\n"); + break; + } + case UBIFS_LPT_LTAB: + node_len = c->ltab_sz; + printk(KERN_DEBUG "LEB %d:%d, ltab\n", + lnum, offs); + break; + case UBIFS_LPT_LSAVE: + node_len = c->lsave_sz; + printk(KERN_DEBUG "LEB %d:%d, lsave len\n", lnum, offs); + break; + default: + ubifs_err("LPT node type %d not recognized", node_type); + return; + } + + buf += node_len; + len -= node_len; + } + + printk(KERN_DEBUG "(pid %d) finish dumping LEB %d\n", + current->pid, lnum); +} + +/** + * dbg_dump_lpt_lebs - dump LPT lebs. + * @c: UBIFS file-system description object + * + * This function dumps all LPT LEBs. The caller has to make sure the LPT is + * locked. + */ +void dbg_dump_lpt_lebs(const struct ubifs_info *c) +{ + int i; + + printk(KERN_DEBUG "(pid %d) start dumping all LPT LEBs\n", + current->pid); + for (i = 0; i < c->lpt_lebs; i++) + dump_lpt_leb(c, i + c->lpt_first); + printk(KERN_DEBUG "(pid %d) finish dumping all LPT LEBs\n", + current->pid); +} + #endif /* CONFIG_UBIFS_FS_DEBUG */ diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 4cf28e85de7..e658b06fd45 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1622,6 +1622,9 @@ void ubifs_add_lpt_dirt(struct ubifs_info *c, int lnum, int dirty); void ubifs_add_nnode_dirt(struct ubifs_info *c, struct ubifs_nnode *nnode); uint32_t ubifs_unpack_bits(uint8_t **addr, int *pos, int nrbits); struct ubifs_nnode *ubifs_first_nnode(struct ubifs_info *c, int *hght); +/* Needed only in debugging code in lpt_commit.c */ +int ubifs_unpack_nnode(const struct ubifs_info *c, void *buf, + struct ubifs_nnode *nnode); /* lpt_commit.c */ int ubifs_lpt_start_commit(struct ubifs_info *c); -- cgit v1.2.3-70-g09d2 From 995be04548f62c8e6b447410cd28b0666614b461 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Thu, 4 Dec 2008 17:04:18 +0300 Subject: UBIFS: fix section mismatch This patch fixes the following section mismatch: WARNING: fs/ubifs/ubifs.o(.init.text+0xec): Section mismatch in reference from the function init_module() to the function .exit.text:ubifs_compressors_exit() Signed-off-by: Artem Bityutskiy --- fs/ubifs/compress.c | 2 +- fs/ubifs/ubifs.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/compress.c b/fs/ubifs/compress.c index 4afb3ea24d4..4c90ee2aef4 100644 --- a/fs/ubifs/compress.c +++ b/fs/ubifs/compress.c @@ -244,7 +244,7 @@ out_lzo: /** * ubifs_compressors_exit - de-initialize UBIFS compressors. */ -void __exit ubifs_compressors_exit(void) +void ubifs_compressors_exit(void) { compr_exit(&lzo_compr); compr_exit(&zlib_compr); diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index e658b06fd45..055c6b52d2f 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1700,7 +1700,7 @@ long ubifs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg); /* compressor.c */ int __init ubifs_compressors_init(void); -void __exit ubifs_compressors_exit(void); +void ubifs_compressors_exit(void); void ubifs_compress(const void *in_buf, int in_len, void *out_buf, int *out_len, int *compr_type); int ubifs_decompress(const void *buf, int len, void *out, int *out_len, -- cgit v1.2.3-70-g09d2 From 21a60258976227daaf7a4c35e96c3d77d4988b15 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 12 Dec 2008 11:13:17 -0500 Subject: UBIFS: improve budgeting dump Dump available space calculated by budgeting subsystem. Signed-off-by: Artem Bityutskiy --- fs/ubifs/budget.c | 4 ++-- fs/ubifs/debug.c | 13 +++++++++++++ fs/ubifs/ubifs.h | 2 +- 3 files changed, 16 insertions(+), 3 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c index 1a4973e1066..d5a65037e17 100644 --- a/fs/ubifs/budget.c +++ b/fs/ubifs/budget.c @@ -713,8 +713,8 @@ void ubifs_release_dirty_inode_budget(struct ubifs_info *c, * (e.g., via the 'statfs()' call) reports that it has N bytes available, they * are able to write a file of size N. UBIFS attaches node headers to each data * node and it has to write indexind nodes as well. This introduces additional - * overhead, and UBIFS it has to report sligtly less free space to meet the - * above expectetion. + * overhead, and UBIFS has to report sligtly less free space to meet the above + * expectetions. * * This function assumes free space is made up of uncompressed data nodes and * full index nodes (one per data node, tripled because we always allow enough diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 367d97520d9..6ecb01a99d1 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -597,7 +597,9 @@ void dbg_dump_budg(struct ubifs_info *c) struct rb_node *rb; struct ubifs_bud *bud; struct ubifs_gced_idx_leb *idx_gc; + long long available, outstanding, free; + ubifs_assert(spin_is_locked(&c->space_lock)); spin_lock(&dbg_lock); printk(KERN_DEBUG "(pid %d) Budgeting info: budg_data_growth %lld, " "budg_dd_growth %lld, budg_idx_growth %lld\n", current->pid, @@ -630,6 +632,17 @@ void dbg_dump_budg(struct ubifs_info *c) printk(KERN_DEBUG "\tGC'ed idx LEB %d unmap %d\n", idx_gc->lnum, idx_gc->unmap); printk(KERN_DEBUG "\tcommit state %d\n", c->cmt_state); + + /* Print budgeting predictions */ + available = ubifs_calc_available(c, c->min_idx_lebs); + outstanding = c->budg_data_growth + c->budg_dd_growth; + if (available > outstanding) + free = ubifs_reported_space(c, available - outstanding); + else + free = 0; + printk(KERN_DEBUG "Budgeting predictions:\n"); + printk(KERN_DEBUG "\tavailable: %lld, outstanding %lld, free %lld\n", + available, outstanding, free); spin_unlock(&dbg_lock); } diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 055c6b52d2f..e61c08106b4 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -419,7 +419,7 @@ struct ubifs_unclean_leb { * * LPROPS_UNCAT: not categorized * LPROPS_DIRTY: dirty > 0, not index - * LPROPS_DIRTY_IDX: dirty + free > UBIFS_CH_SZ and index + * LPROPS_DIRTY_IDX: dirty + free > @c->min_idx_node_sze and index * LPROPS_FREE: free > 0, not empty, not index * LPROPS_HEAP_CNT: number of heaps used for storing categorized LEBs * LPROPS_EMPTY: LEB is empty, not taken -- cgit v1.2.3-70-g09d2 From d3cf502b6ccee1c52890d42cd18cbc98b7526126 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Tue, 16 Dec 2008 17:52:35 +0200 Subject: UBIFS: various comment improvements and fixes Signed-off-by: Artem Bityutskiy --- fs/ubifs/lprops.c | 12 ++++++------ fs/ubifs/ubifs.h | 34 ++++++++++++++++++---------------- 2 files changed, 24 insertions(+), 22 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/lprops.c b/fs/ubifs/lprops.c index 10ba663eb32..dfd2bcece27 100644 --- a/fs/ubifs/lprops.c +++ b/fs/ubifs/lprops.c @@ -520,13 +520,13 @@ static int is_lprops_dirty(struct ubifs_info *c, struct ubifs_lprops *lprops) * @flags: new flags * @idx_gc_cnt: change to the count of idx_gc list * - * This function changes LEB properties. This function does not change a LEB - * property (@free, @dirty or @flag) if the value passed is %LPROPS_NC. + * This function changes LEB properties (@free, @dirty or @flag). However, the + * property which has the %LPROPS_NC value is not changed. Returns a pointer to + * the updated LEB properties on success and a negative error code on failure. * - * This function returns a pointer to the updated LEB properties on success - * and a negative error code on failure. N.B. the LEB properties may have had to - * be copied (due to COW) and consequently the pointer returned may not be the - * same as the pointer passed. + * Note, the LEB properties may have had to be copied (due to COW) and + * consequently the pointer returned may not be the same as the pointer + * passed. */ const struct ubifs_lprops *ubifs_change_lp(struct ubifs_info *c, const struct ubifs_lprops *lp, diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index e61c08106b4..f8ef7c1def1 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -482,24 +482,26 @@ struct ubifs_lpt_lprops { * @empty_lebs: number of empty LEBs * @taken_empty_lebs: number of taken LEBs * @idx_lebs: number of indexing LEBs - * @total_free: total free space in bytes - * @total_dirty: total dirty space in bytes - * @total_used: total used space in bytes (includes only data LEBs) - * @total_dead: total dead space in bytes (includes only data LEBs) - * @total_dark: total dark space in bytes (includes only data LEBs) + * @total_free: total free space in bytes (includes all LEBs) + * @total_dirty: total dirty space in bytes (includes all LEBs) + * @total_used: total used space in bytes (does not include index LEBs) + * @total_dead: total dead space in bytes (does not include index LEBs) + * @total_dark: total dark space in bytes (does not include index LEBs) * - * N.B. total_dirty and total_used are different to other total_* fields, - * because they account _all_ LEBs, not just data LEBs. + * The @taken_empty_lebs field counts the LEBs that are in the transient state + * of having been "taken" for use but not yet written to. @taken_empty_lebs is + * needed to account correctly for @gc_lnum, otherwise @empty_lebs could be + * used by itself (in which case 'unused_lebs' would be a better name). In the + * case of @gc_lnum, it is "taken" at mount time or whenever a LEB is retained + * by GC, but unlike other empty LEBs that are "taken", it may not be written + * straight away (i.e. before the next commit start or unmount), so either + * @gc_lnum must be specially accounted for, or the current approach followed + * i.e. count it under @taken_empty_lebs. * - * 'taken_empty_lebs' counts the LEBs that are in the transient state of having - * been 'taken' for use but not yet written to. 'taken_empty_lebs' is needed - * to account correctly for gc_lnum, otherwise 'empty_lebs' could be used - * by itself (in which case 'unused_lebs' would be a better name). In the case - * of gc_lnum, it is 'taken' at mount time or whenever a LEB is retained by GC, - * but unlike other empty LEBs that are 'taken', it may not be written straight - * away (i.e. before the next commit start or unmount), so either gc_lnum must - * be specially accounted for, or the current approach followed i.e. count it - * under 'taken_empty_lebs'. + * @empty_lebs includes @taken_empty_lebs. + * + * @total_used, @total_dead and @total_dark fields do not account indexing + * LEBs. */ struct ubifs_lp_stats { int empty_lebs; -- cgit v1.2.3-70-g09d2 From af14a1ad792621942a03e4bd0e5f17b6e177e2e0 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Fri, 19 Dec 2008 19:26:29 +0200 Subject: UBIFS: fix available blocks count Take into account that 2 eraseblocks are never available because they are reserved for the index. This gives more realistic count of FS blocks. To avoid future confusions like this, introduce a constant. Signed-off-by: Artem Bityutskiy --- fs/ubifs/budget.c | 9 ++------- fs/ubifs/super.c | 5 +++-- fs/ubifs/ubifs.h | 8 ++++++++ 3 files changed, 13 insertions(+), 9 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c index d5a65037e17..e4234254700 100644 --- a/fs/ubifs/budget.c +++ b/fs/ubifs/budget.c @@ -280,13 +280,8 @@ int ubifs_calc_min_idx_lebs(struct ubifs_info *c) * extra LEB to compensate. */ ret += 1; - /* - * At present the index needs at least 2 LEBs: one for the index head - * and one for in-the-gaps method (which currently does not cater for - * the index head and so excludes it from consideration). - */ - if (ret < 2) - ret = 2; + if (ret < MIN_INDEX_LEBS) + ret = MIN_INDEX_LEBS; return ret; } diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index 2dbaa4fc2cb..a6a7798d020 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -695,9 +695,10 @@ static int init_constants_late(struct ubifs_info *c) * necessary to report something for the 'statfs()' call. * * Subtract the LEB reserved for GC, the LEB which is reserved for - * deletions, and assume only one journal head is available. + * deletions, minimum LEBs for the index, and assume only one journal + * head is available. */ - tmp64 = c->main_lebs - 2 - c->jhead_cnt + 1; + tmp64 = c->main_lebs - 1 - 1 - MIN_INDEX_LEBS - c->jhead_cnt + 1; tmp64 *= (uint64_t)c->leb_size - c->leb_overhead; tmp64 = ubifs_reported_space(c, tmp64); c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT; diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index f8ef7c1def1..543e850022e 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -63,6 +63,14 @@ #define SQNUM_WARN_WATERMARK 0xFFFFFFFF00000000ULL #define SQNUM_WATERMARK 0xFFFFFFFFFF000000ULL +/* + * Minimum amount of LEBs reserved for the index. At present the index needs at + * least 2 LEBs: one for the index head and one for in-the-gaps method (which + * currently does not cater for the index head and so excludes it from + * consideration). + */ +#define MIN_INDEX_LEBS 2 + /* Minimum amount of data UBIFS writes to the flash */ #define MIN_WRITE_SZ (UBIFS_DATA_NODE_SZ + 8) -- cgit v1.2.3-70-g09d2 From 4d61db4f87b527734ac0cc830dda8fcc4e2add2f Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Thu, 18 Dec 2008 14:06:51 +0200 Subject: UBIFS: use nicer 64-bit math Instead of using do_div(), use better primitives from linux/math64.h. Signed-off-by: Artem Bityutskiy --- fs/ubifs/budget.c | 25 +++++++++++-------------- fs/ubifs/debug.c | 1 + fs/ubifs/lpt.c | 15 ++++++--------- fs/ubifs/sb.c | 10 +++++----- fs/ubifs/super.c | 12 ++++++------ fs/ubifs/ubifs.h | 2 +- 6 files changed, 30 insertions(+), 35 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c index e4234254700..0bcb8031ca1 100644 --- a/fs/ubifs/budget.c +++ b/fs/ubifs/budget.c @@ -32,7 +32,7 @@ #include "ubifs.h" #include -#include +#include /* * When pessimistic budget calculations say that there is no enough space, @@ -258,8 +258,8 @@ static int make_free_space(struct ubifs_info *c, struct retries_info *ri) */ int ubifs_calc_min_idx_lebs(struct ubifs_info *c) { - int ret; - uint64_t idx_size; + int idx_lebs, eff_leb_size = c->leb_size - c->max_idx_node_sz; + long long idx_size; idx_size = c->old_idx_sz + c->budg_idx_growth + c->budg_uncommitted_idx; @@ -271,18 +271,16 @@ int ubifs_calc_min_idx_lebs(struct ubifs_info *c) * pair, nor similarly the two variables for the new index size, so we * have to do this costly 64-bit division on fast-path. */ - if (do_div(idx_size, c->leb_size - c->max_idx_node_sz)) - ret = idx_size + 1; - else - ret = idx_size; + idx_size += eff_leb_size - 1; + idx_lebs = div_u64(idx_size, eff_leb_size); /* * The index head is not available for the in-the-gaps method, so add an * extra LEB to compensate. */ - ret += 1; - if (ret < MIN_INDEX_LEBS) - ret = MIN_INDEX_LEBS; - return ret; + idx_lebs += 1; + if (idx_lebs < MIN_INDEX_LEBS) + idx_lebs = MIN_INDEX_LEBS; + return idx_lebs; } /** @@ -718,7 +716,7 @@ void ubifs_release_dirty_inode_budget(struct ubifs_info *c, * Note, the calculation is pessimistic, which means that most of the time * UBIFS reports less space than it actually has. */ -long long ubifs_reported_space(const struct ubifs_info *c, uint64_t free) +long long ubifs_reported_space(const struct ubifs_info *c, long long free) { int divisor, factor, f; @@ -740,8 +738,7 @@ long long ubifs_reported_space(const struct ubifs_info *c, uint64_t free) divisor = UBIFS_MAX_DATA_NODE_SZ; divisor += (c->max_idx_node_sz * 3) / (f - 1); free *= factor; - do_div(free, divisor); - return free; + return div_u64(free, divisor); } /** diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index 6ecb01a99d1..a2be11584ad 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -33,6 +33,7 @@ #include #include #include +#include #ifdef CONFIG_UBIFS_FS_DEBUG diff --git a/fs/ubifs/lpt.c b/fs/ubifs/lpt.c index 6d914160ec5..b2792e84d24 100644 --- a/fs/ubifs/lpt.c +++ b/fs/ubifs/lpt.c @@ -43,8 +43,9 @@ * mounted. */ -#include #include "ubifs.h" +#include +#include /** * do_calc_lpt_geom - calculate sizes for the LPT area. @@ -135,15 +136,13 @@ static void do_calc_lpt_geom(struct ubifs_info *c) int ubifs_calc_lpt_geom(struct ubifs_info *c) { int lebs_needed; - uint64_t sz; + long long sz; do_calc_lpt_geom(c); /* Verify that lpt_lebs is big enough */ sz = c->lpt_sz * 2; /* Must have at least 2 times the size */ - sz += c->leb_size - 1; - do_div(sz, c->leb_size); - lebs_needed = sz; + lebs_needed = div_u64(sz + c->leb_size - 1, c->leb_size); if (lebs_needed > c->lpt_lebs) { ubifs_err("too few LPT LEBs"); return -EINVAL; @@ -175,7 +174,7 @@ static int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, int *big_lpt) { int i, lebs_needed; - uint64_t sz; + long long sz; /* Start by assuming the minimum number of LPT LEBs */ c->lpt_lebs = UBIFS_MIN_LPT_LEBS; @@ -202,9 +201,7 @@ static int calc_dflt_lpt_geom(struct ubifs_info *c, int *main_lebs, /* Now check there are enough LPT LEBs */ for (i = 0; i < 64 ; i++) { sz = c->lpt_sz * 4; /* Allow 4 times the size */ - sz += c->leb_size - 1; - do_div(sz, c->leb_size); - lebs_needed = sz; + lebs_needed = div_u64(sz + c->leb_size - 1, c->leb_size); if (lebs_needed > c->lpt_lebs) { /* Not enough LPT LEBs so try again with more */ c->lpt_lebs = lebs_needed; diff --git a/fs/ubifs/sb.c b/fs/ubifs/sb.c index c5da201ab54..e070c643d1b 100644 --- a/fs/ubifs/sb.c +++ b/fs/ubifs/sb.c @@ -28,6 +28,7 @@ #include "ubifs.h" #include +#include /* * Default journal size in logical eraseblocks as a percent of total @@ -80,7 +81,7 @@ static int create_default_filesystem(struct ubifs_info *c) int err, tmp, jnl_lebs, log_lebs, max_buds, main_lebs, main_first; int lpt_lebs, lpt_first, orph_lebs, big_lpt, ino_waste, sup_flags = 0; int min_leb_cnt = UBIFS_MIN_LEB_CNT; - uint64_t tmp64, main_bytes; + long long tmp64, main_bytes; __le64 tmp_le64; /* Some functions called from here depend on the @c->key_len filed */ @@ -160,7 +161,7 @@ static int create_default_filesystem(struct ubifs_info *c) if (!sup) return -ENOMEM; - tmp64 = (uint64_t)max_buds * c->leb_size; + tmp64 = (long long)max_buds * c->leb_size; if (big_lpt) sup_flags |= UBIFS_FLG_BIGLPT; @@ -187,9 +188,8 @@ static int create_default_filesystem(struct ubifs_info *c) generate_random_uuid(sup->uuid); - main_bytes = (uint64_t)main_lebs * c->leb_size; - tmp64 = main_bytes * DEFAULT_RP_PERCENT; - do_div(tmp64, 100); + main_bytes = (long long)main_lebs * c->leb_size; + tmp64 = div_u64(main_bytes * DEFAULT_RP_PERCENT, 100); if (tmp64 > DEFAULT_MAX_RP_SIZE) tmp64 = DEFAULT_MAX_RP_SIZE; sup->rp_size = cpu_to_le64(tmp64); diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c index a6a7798d020..c3cefc84137 100644 --- a/fs/ubifs/super.c +++ b/fs/ubifs/super.c @@ -34,6 +34,7 @@ #include #include #include +#include #include "ubifs.h" /* @@ -612,7 +613,7 @@ static int bud_wbuf_callback(struct ubifs_info *c, int lnum, int free, int pad) static int init_constants_late(struct ubifs_info *c) { int tmp, err; - uint64_t tmp64; + long long tmp64; c->main_bytes = (long long)c->main_lebs * c->leb_size; c->max_znode_sz = sizeof(struct ubifs_znode) + @@ -639,9 +640,8 @@ static int init_constants_late(struct ubifs_info *c) * Make sure that the log is large enough to fit reference nodes for * all buds plus one reserved LEB. */ - tmp64 = c->max_bud_bytes; - tmp = do_div(tmp64, c->leb_size); - c->max_bud_cnt = tmp64 + !!tmp; + tmp64 = c->max_bud_bytes + c->leb_size - 1; + c->max_bud_cnt = div_u64(tmp64, c->leb_size); tmp = (c->ref_node_alsz * c->max_bud_cnt + c->leb_size - 1); tmp /= c->leb_size; tmp += 1; @@ -677,7 +677,7 @@ static int init_constants_late(struct ubifs_info *c) * Consequently, if the journal is too small, UBIFS will treat it as * always full. */ - tmp64 = (uint64_t)(c->jhead_cnt + 1) * c->leb_size + 1; + tmp64 = (long long)(c->jhead_cnt + 1) * c->leb_size + 1; if (c->bg_bud_bytes < tmp64) c->bg_bud_bytes = tmp64; if (c->max_bud_bytes < tmp64 + c->leb_size) @@ -699,7 +699,7 @@ static int init_constants_late(struct ubifs_info *c) * head is available. */ tmp64 = c->main_lebs - 1 - 1 - MIN_INDEX_LEBS - c->jhead_cnt + 1; - tmp64 *= (uint64_t)c->leb_size - c->leb_overhead; + tmp64 *= (long long)c->leb_size - c->leb_overhead; tmp64 = ubifs_reported_space(c, tmp64); c->block_cnt = tmp64 >> UBIFS_BLOCK_SHIFT; diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 543e850022e..a17dd794ae9 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1498,7 +1498,7 @@ void ubifs_cancel_ino_op(struct ubifs_info *c, struct inode *inode, long long ubifs_get_free_space(struct ubifs_info *c); int ubifs_calc_min_idx_lebs(struct ubifs_info *c); void ubifs_convert_page_budget(struct ubifs_info *c); -long long ubifs_reported_space(const struct ubifs_info *c, uint64_t free); +long long ubifs_reported_space(const struct ubifs_info *c, long long free); long long ubifs_calc_available(const struct ubifs_info *c, int min_idx_lebs); /* find.c */ -- cgit v1.2.3-70-g09d2 From f92b982680e4b4149c559789a54e1e9db190752a Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Sun, 28 Dec 2008 11:34:26 +0200 Subject: UBIFS: fix checkpatch.pl warnings These are mostly long lines and wrong indentation warning fixes. But also there are two volatile variables and checkpatch.pl complains about them: WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt + volatile int gc_seq; WARNING: Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt + volatile int gced_lnum; Well, we anyway use smp_wmb() for c->gc_seq and c->gced_lnum, so these 'volatile' modifiers can be just dropped. Signed-off-by: Artem Bityutskiy --- fs/ubifs/debug.c | 3 ++- fs/ubifs/file.c | 4 ++-- fs/ubifs/journal.c | 2 +- fs/ubifs/lpt_commit.c | 2 +- fs/ubifs/tnc.c | 31 +++++++++++++++---------------- fs/ubifs/ubifs.h | 8 ++++---- 6 files changed, 25 insertions(+), 25 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/fs/ubifs/debug.c b/fs/ubifs/debug.c index a2be11584ad..350fedecc83 100644 --- a/fs/ubifs/debug.c +++ b/fs/ubifs/debug.c @@ -703,7 +703,8 @@ void dbg_dump_lpt_info(struct ubifs_info *c) printk(KERN_DEBUG "\tLPT root is at %d:%d\n", c->lpt_lnum, c->lpt_offs); printk(KERN_DEBUG "\tLPT head is at %d:%d\n", c->nhead_lnum, c->nhead_offs); - printk(KERN_DEBUG "\tLPT ltab is at %d:%d\n", c->ltab_lnum, c->ltab_offs); + printk(KERN_DEBUG "\tLPT ltab is at %d:%d\n", + c->ltab_lnum, c->ltab_offs); if (c->big_lpt) printk(KERN_DEBUG "\tLPT lsave is at %d:%d\n", c->lsave_lnum, c->lsave_offs); diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c index 7f1de98e609..fe82d2464d4 100644 --- a/fs/ubifs/file.c +++ b/fs/ubifs/file.c @@ -72,8 +72,8 @@ static int read_block(struct inode *inode, void *addr, unsigned int block, return err; } - ubifs_assert(le64_to_cpu(dn->ch.sqnum) > ubifs_inode(inode)->creat_sqnum); - + ubifs_assert(le64_to_cpu(dn->ch.sqnum) > + ubifs_inode(inode)->creat_sqnum); len = le32_to_cpu(dn->size); if (len <= 0 || len > UBIFS_BLOCK_SIZE) goto dump; diff --git a/fs/ubifs/journal.c b/fs/ubifs/journal.c index f91b745908e..3b0fa704d55 100644 --- a/fs/ubifs/journal.c +++ b/fs/ubifs/journal.c @@ -1220,7 +1220,7 @@ int ubifs_jnl_truncate(struct ubifs_info *c, const struct inode *inode, data_key_init(c, &key, inum, blk); bit = old_size & (UBIFS_BLOCK_SIZE - 1); - blk = (old_size >> UBIFS_BLOCK_SHIFT) - (bit ? 0: 1); + blk = (old_size >> UBIFS_BLOCK_SHIFT) - (bit ? 0 : 1); data_key_init(c, &to_key, inum, blk); err = ubifs_tnc_remove_range(c, &key, &to_key); diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index da60b5a0fab..b8a06079423 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -548,7 +548,7 @@ static int write_cnodes(struct ubifs_info *c) no_space: ubifs_err("LPT out of space mismatch"); dbg_err("LPT out of space mismatch at LEB %d:%d needing %d, done_ltab " - "%d, done_lsave %d", lnum, offs, len, done_ltab, done_lsave); + "%d, done_lsave %d", lnum, offs, len, done_ltab, done_lsave); dbg_dump_lpt_info(c); dbg_dump_lpt_lebs(c); dump_stack(); diff --git a/fs/ubifs/tnc.c b/fs/ubifs/tnc.c index 6eef5344a14..f7e36f54552 100644 --- a/fs/ubifs/tnc.c +++ b/fs/ubifs/tnc.c @@ -2245,12 +2245,11 @@ int ubifs_tnc_replace(struct ubifs_info *c, const union ubifs_key *key, if (found) { /* Ensure the znode is dirtied */ if (znode->cnext || !ubifs_zn_dirty(znode)) { - znode = dirty_cow_bottom_up(c, - znode); - if (IS_ERR(znode)) { - err = PTR_ERR(znode); - goto out_unlock; - } + znode = dirty_cow_bottom_up(c, znode); + if (IS_ERR(znode)) { + err = PTR_ERR(znode); + goto out_unlock; + } } zbr = &znode->zbranch[n]; lnc_free(zbr); @@ -2317,11 +2316,11 @@ int ubifs_tnc_add_nm(struct ubifs_info *c, const union ubifs_key *key, /* Ensure the znode is dirtied */ if (znode->cnext || !ubifs_zn_dirty(znode)) { - znode = dirty_cow_bottom_up(c, znode); - if (IS_ERR(znode)) { - err = PTR_ERR(znode); - goto out_unlock; - } + znode = dirty_cow_bottom_up(c, znode); + if (IS_ERR(znode)) { + err = PTR_ERR(znode); + goto out_unlock; + } } if (found == 1) { @@ -2627,11 +2626,11 @@ int ubifs_tnc_remove_range(struct ubifs_info *c, union ubifs_key *from_key, /* Ensure the znode is dirtied */ if (znode->cnext || !ubifs_zn_dirty(znode)) { - znode = dirty_cow_bottom_up(c, znode); - if (IS_ERR(znode)) { - err = PTR_ERR(znode); - goto out_unlock; - } + znode = dirty_cow_bottom_up(c, znode); + if (IS_ERR(znode)) { + err = PTR_ERR(znode); + goto out_unlock; + } } /* Remove all keys in range except the first */ diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index a17dd794ae9..3275c89a358 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -481,8 +481,8 @@ struct ubifs_lprops { struct ubifs_lpt_lprops { int free; int dirty; - unsigned tgc : 1; - unsigned cmt : 1; + unsigned tgc:1; + unsigned cmt:1; }; /** @@ -1322,8 +1322,8 @@ struct ubifs_info { void *sbuf; struct list_head idx_gc; int idx_gc_cnt; - volatile int gc_seq; - volatile int gced_lnum; + int gc_seq; + int gced_lnum; struct list_head infos_list; struct mutex umount_mutex; -- cgit v1.2.3-70-g09d2 From 80736d41f895bc472b2433a1c27fa6d4afe6ca35 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Tue, 30 Dec 2008 17:44:02 +0200 Subject: UBIFS: fix numerous spelling mistakes Signed-off-by: Artem Bityutskiy --- Documentation/filesystems/ubifs.txt | 6 +++--- fs/ubifs/budget.c | 14 +++++++------- fs/ubifs/lpt_commit.c | 8 ++++---- fs/ubifs/ubifs.h | 1 - 4 files changed, 14 insertions(+), 15 deletions(-) (limited to 'fs/ubifs/ubifs.h') diff --git a/Documentation/filesystems/ubifs.txt b/Documentation/filesystems/ubifs.txt index 2d0db5482d2..84da2a4ba25 100644 --- a/Documentation/filesystems/ubifs.txt +++ b/Documentation/filesystems/ubifs.txt @@ -95,9 +95,9 @@ no_chk_data_crc skip checking of CRCs on data nodes in order to of this option is that corruption of the contents of a file can go unnoticed. chk_data_crc (*) do not skip checking CRCs on data nodes -compr=none override defoult comressor and set it to "none" -compr=lzo override defoult comressor and set it to "lzo" -compr=zlib override defoult comressor and set it to "zlib" +compr=none override default compressor and set it to "none" +compr=lzo override default compressor and set it to "lzo" +compr=zlib override default compressor and set it to "zlib" Quick usage instructions diff --git a/fs/ubifs/budget.c b/fs/ubifs/budget.c index 4d270f0a856..31870d8dab8 100644 --- a/fs/ubifs/budget.c +++ b/fs/ubifs/budget.c @@ -652,9 +652,9 @@ void ubifs_release_dirty_inode_budget(struct ubifs_info *c, * user-space. User-space application tend to expect that if the file-system * (e.g., via the 'statfs()' call) reports that it has N bytes available, they * are able to write a file of size N. UBIFS attaches node headers to each data - * node and it has to write indexind nodes as well. This introduces additional - * overhead, and UBIFS has to report sligtly less free space to meet the above - * expectetions. + * node and it has to write indexing nodes as well. This introduces additional + * overhead, and UBIFS has to report slightly less free space to meet the above + * expectations. * * This function assumes free space is made up of uncompressed data nodes and * full index nodes (one per data node, tripled because we always allow enough @@ -677,7 +677,7 @@ long long ubifs_reported_space(const struct ubifs_info *c, long long free) * of data nodes, f - fanout. Because effective UBIFS fanout is twice * as less than maximum fanout, we assume that each data node * introduces 3 * @c->max_idx_node_sz / (@c->fanout/2 - 1) bytes. - * Note, the multiplier 3 is because UBIFS reseves thrice as more space + * Note, the multiplier 3 is because UBIFS reserves thrice as more space * for the index. */ f = c->fanout > 3 ? c->fanout >> 1 : 2; @@ -695,10 +695,10 @@ long long ubifs_reported_space(const struct ubifs_info *c, long long free) * This function calculates amount of free space to report to user-space. * * Because UBIFS may introduce substantial overhead (the index, node headers, - * alighment, wastage at the end of eraseblocks, etc), it cannot report real + * alignment, wastage at the end of eraseblocks, etc), it cannot report real * amount of free flash space it has (well, because not all dirty space is - * reclamable, UBIFS does not actually know the real amount). If UBIFS did so, - * it would bread user expectetion about what free space is. Users seem to + * reclaimable, UBIFS does not actually know the real amount). If UBIFS did so, + * it would bread user expectations about what free space is. Users seem to * accustomed to assume that if the file-system reports N bytes of free space, * they would be able to fit a file of N bytes to the FS. This almost works for * traditional file-systems, because they have way less overhead than UBIFS. diff --git a/fs/ubifs/lpt_commit.c b/fs/ubifs/lpt_commit.c index b8a06079423..96ca9570717 100644 --- a/fs/ubifs/lpt_commit.c +++ b/fs/ubifs/lpt_commit.c @@ -753,7 +753,7 @@ static void lpt_tgc_start(struct ubifs_info *c) * LPT trivial garbage collection is where a LPT LEB contains only dirty and * free space and so may be reused as soon as the next commit is completed. * This function is called after the commit is completed (master node has been - * written) and unmaps LPT LEBs that were marked for trivial GC. + * written) and un-maps LPT LEBs that were marked for trivial GC. */ static int lpt_tgc_end(struct ubifs_info *c) { @@ -1467,7 +1467,7 @@ void ubifs_lpt_free(struct ubifs_info *c, int wr_only) #ifdef CONFIG_UBIFS_FS_DEBUG /** - * dbg_is_all_ff - determine if a buffer contains only 0xff bytes. + * dbg_is_all_ff - determine if a buffer contains only 0xFF bytes. * @buf: buffer * @len: buffer length */ @@ -1492,7 +1492,7 @@ static int dbg_is_nnode_dirty(struct ubifs_info *c, int lnum, int offs) struct ubifs_nnode *nnode; int hght; - /* Entire tree is in memory so first_nnode / next_nnode are ok */ + /* Entire tree is in memory so first_nnode / next_nnode are OK */ nnode = first_nnode(c, &hght); for (; nnode; nnode = next_nnode(c, nnode, &hght)) { struct ubifs_nbranch *branch; @@ -1837,7 +1837,7 @@ int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len) * This function dumps an LEB from LPT area. Nodes in this area are very * different to nodes in the main area (e.g., they do not have common headers, * they do not have 8-byte alignments, etc), so we have a separate function to - * dump LPT area LEBs. Note, LPT has to be locked by the coller. + * dump LPT area LEBs. Note, LPT has to be locked by the caller. */ static void dump_lpt_leb(const struct ubifs_info *c, int lnum) { diff --git a/fs/ubifs/ubifs.h b/fs/ubifs/ubifs.h index 3275c89a358..fc2a4cc66d0 100644 --- a/fs/ubifs/ubifs.h +++ b/fs/ubifs/ubifs.h @@ -1168,7 +1168,6 @@ struct ubifs_debug_info; * @mount_opts: UBIFS-specific mount options * * @dbg: debugging-related information - * @dfs: debugfs support-related information */ struct ubifs_info { struct super_block *vfs_sb; -- cgit v1.2.3-70-g09d2