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Diffstat (limited to 'fs/ocfs2/super.c')
-rw-r--r--fs/ocfs2/super.c202
1 files changed, 129 insertions, 73 deletions
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 3a5a1ed09ac..0e2a1b45bf9 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -39,6 +39,7 @@
#include <linux/parser.h>
#include <linux/crc32.h>
#include <linux/debugfs.h>
+#include <linux/mount.h>
#include <cluster/nodemanager.h>
@@ -81,9 +82,17 @@ static struct dentry *ocfs2_debugfs_root = NULL;
MODULE_AUTHOR("Oracle");
MODULE_LICENSE("GPL");
+struct mount_options
+{
+ unsigned long mount_opt;
+ unsigned int atime_quantum;
+ signed short slot;
+};
+
static int ocfs2_parse_options(struct super_block *sb, char *options,
- unsigned long *mount_opt, s16 *slot,
+ struct mount_options *mopt,
int is_remount);
+static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt);
static void ocfs2_put_super(struct super_block *sb);
static int ocfs2_mount_volume(struct super_block *sb);
static int ocfs2_remount(struct super_block *sb, int *flags, char *data);
@@ -98,7 +107,7 @@ static int ocfs2_sync_fs(struct super_block *sb, int wait);
static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb);
static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb);
-static int ocfs2_release_system_inodes(struct ocfs2_super *osb);
+static void ocfs2_release_system_inodes(struct ocfs2_super *osb);
static int ocfs2_fill_local_node_info(struct ocfs2_super *osb);
static int ocfs2_check_volume(struct ocfs2_super *osb);
static int ocfs2_verify_volume(struct ocfs2_dinode *di,
@@ -126,6 +135,7 @@ static const struct super_operations ocfs2_sops = {
.write_super = ocfs2_write_super,
.put_super = ocfs2_put_super,
.remount_fs = ocfs2_remount,
+ .show_options = ocfs2_show_options,
};
enum {
@@ -170,7 +180,7 @@ static void ocfs2_write_super(struct super_block *sb)
static int ocfs2_sync_fs(struct super_block *sb, int wait)
{
- int status = 0;
+ int status;
tid_t target;
struct ocfs2_super *osb = OCFS2_SB(sb);
@@ -268,9 +278,9 @@ bail:
return status;
}
-static int ocfs2_release_system_inodes(struct ocfs2_super *osb)
+static void ocfs2_release_system_inodes(struct ocfs2_super *osb)
{
- int status = 0, i;
+ int i;
struct inode *inode;
mlog_entry_void();
@@ -295,8 +305,7 @@ static int ocfs2_release_system_inodes(struct ocfs2_super *osb)
osb->root_inode = NULL;
}
- mlog_exit(status);
- return status;
+ mlog_exit(0);
}
/* We're allocating fs objects, use GFP_NOFS */
@@ -316,63 +325,74 @@ static void ocfs2_destroy_inode(struct inode *inode)
kmem_cache_free(ocfs2_inode_cachep, OCFS2_I(inode));
}
-/* From xfs_super.c:xfs_max_file_offset
- * Copyright (c) 2000-2004 Silicon Graphics, Inc.
- */
-unsigned long long ocfs2_max_file_offset(unsigned int blockshift)
+static unsigned long long ocfs2_max_file_offset(unsigned int bbits,
+ unsigned int cbits)
{
- unsigned int pagefactor = 1;
- unsigned int bitshift = BITS_PER_LONG - 1;
-
- /* Figure out maximum filesize, on Linux this can depend on
- * the filesystem blocksize (on 32 bit platforms).
- * __block_prepare_write does this in an [unsigned] long...
- * page->index << (PAGE_CACHE_SHIFT - bbits)
- * So, for page sized blocks (4K on 32 bit platforms),
- * this wraps at around 8Tb (hence MAX_LFS_FILESIZE which is
- * (((u64)PAGE_CACHE_SIZE << (BITS_PER_LONG-1))-1)
- * but for smaller blocksizes it is less (bbits = log2 bsize).
- * Note1: get_block_t takes a long (implicit cast from above)
- * Note2: The Large Block Device (LBD and HAVE_SECTOR_T) patch
- * can optionally convert the [unsigned] long from above into
- * an [unsigned] long long.
+ unsigned int bytes = 1 << cbits;
+ unsigned int trim = bytes;
+ unsigned int bitshift = 32;
+
+ /*
+ * i_size and all block offsets in ocfs2 are always 64 bits
+ * wide. i_clusters is 32 bits, in cluster-sized units. So on
+ * 64 bit platforms, cluster size will be the limiting factor.
*/
#if BITS_PER_LONG == 32
# if defined(CONFIG_LBD)
BUILD_BUG_ON(sizeof(sector_t) != 8);
- pagefactor = PAGE_CACHE_SIZE;
- bitshift = BITS_PER_LONG;
+ /*
+ * We might be limited by page cache size.
+ */
+ if (bytes > PAGE_CACHE_SIZE) {
+ bytes = PAGE_CACHE_SIZE;
+ trim = 1;
+ /*
+ * Shift by 31 here so that we don't get larger than
+ * MAX_LFS_FILESIZE
+ */
+ bitshift = 31;
+ }
# else
- pagefactor = PAGE_CACHE_SIZE >> (PAGE_CACHE_SHIFT - blockshift);
+ /*
+ * We are limited by the size of sector_t. Use block size, as
+ * that's what we expose to the VFS.
+ */
+ bytes = 1 << bbits;
+ trim = 1;
+ bitshift = 31;
# endif
#endif
- return (((unsigned long long)pagefactor) << bitshift) - 1;
+ /*
+ * Trim by a whole cluster when we can actually approach the
+ * on-disk limits. Otherwise we can overflow i_clusters when
+ * an extent start is at the max offset.
+ */
+ return (((unsigned long long)bytes) << bitshift) - trim;
}
static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
{
int incompat_features;
int ret = 0;
- unsigned long parsed_options;
- s16 slot;
+ struct mount_options parsed_options;
struct ocfs2_super *osb = OCFS2_SB(sb);
- if (!ocfs2_parse_options(sb, data, &parsed_options, &slot, 1)) {
+ if (!ocfs2_parse_options(sb, data, &parsed_options, 1)) {
ret = -EINVAL;
goto out;
}
if ((osb->s_mount_opt & OCFS2_MOUNT_HB_LOCAL) !=
- (parsed_options & OCFS2_MOUNT_HB_LOCAL)) {
+ (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL)) {
ret = -EINVAL;
mlog(ML_ERROR, "Cannot change heartbeat mode on remount\n");
goto out;
}
if ((osb->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK) !=
- (parsed_options & OCFS2_MOUNT_DATA_WRITEBACK)) {
+ (parsed_options.mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)) {
ret = -EINVAL;
mlog(ML_ERROR, "Cannot change data mode on remount\n");
goto out;
@@ -423,7 +443,9 @@ unlock_osb:
/* Only save off the new mount options in case of a successful
* remount. */
- osb->s_mount_opt = parsed_options;
+ osb->s_mount_opt = parsed_options.mount_opt;
+ osb->s_atime_quantum = parsed_options.atime_quantum;
+ osb->preferred_slot = parsed_options.slot;
}
out:
return ret;
@@ -433,7 +455,7 @@ static int ocfs2_sb_probe(struct super_block *sb,
struct buffer_head **bh,
int *sector_size)
{
- int status = 0, tmpstat;
+ int status, tmpstat;
struct ocfs1_vol_disk_hdr *hdr;
struct ocfs2_dinode *di;
int blksize;
@@ -535,8 +557,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
{
struct dentry *root;
int status, sector_size;
- unsigned long parsed_opt;
- s16 slot;
+ struct mount_options parsed_options;
struct inode *inode = NULL;
struct ocfs2_super *osb = NULL;
struct buffer_head *bh = NULL;
@@ -544,14 +565,14 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
mlog_entry("%p, %p, %i", sb, data, silent);
- if (!ocfs2_parse_options(sb, data, &parsed_opt, &slot, 0)) {
+ if (!ocfs2_parse_options(sb, data, &parsed_options, 0)) {
status = -EINVAL;
goto read_super_error;
}
/* for now we only have one cluster/node, make sure we see it
* in the heartbeat universe */
- if (parsed_opt & OCFS2_MOUNT_HB_LOCAL) {
+ if (parsed_options.mount_opt & OCFS2_MOUNT_HB_LOCAL) {
if (!o2hb_check_local_node_heartbeating()) {
status = -EINVAL;
goto read_super_error;
@@ -573,8 +594,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
}
brelse(bh);
bh = NULL;
- osb->s_mount_opt = parsed_opt;
- osb->preferred_slot = slot;
+ osb->s_mount_opt = parsed_options.mount_opt;
+ osb->s_atime_quantum = parsed_options.atime_quantum;
+ osb->preferred_slot = parsed_options.slot;
sb->s_magic = OCFS2_SUPER_MAGIC;
@@ -716,8 +738,7 @@ static struct file_system_type ocfs2_fs_type = {
static int ocfs2_parse_options(struct super_block *sb,
char *options,
- unsigned long *mount_opt,
- s16 *slot,
+ struct mount_options *mopt,
int is_remount)
{
int status;
@@ -726,8 +747,9 @@ static int ocfs2_parse_options(struct super_block *sb,
mlog_entry("remount: %d, options: \"%s\"\n", is_remount,
options ? options : "(none)");
- *mount_opt = 0;
- *slot = OCFS2_INVALID_SLOT;
+ mopt->mount_opt = 0;
+ mopt->atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
+ mopt->slot = OCFS2_INVALID_SLOT;
if (!options) {
status = 1;
@@ -737,7 +759,6 @@ static int ocfs2_parse_options(struct super_block *sb,
while ((p = strsep(&options, ",")) != NULL) {
int token, option;
substring_t args[MAX_OPT_ARGS];
- struct ocfs2_super * osb = OCFS2_SB(sb);
if (!*p)
continue;
@@ -745,10 +766,10 @@ static int ocfs2_parse_options(struct super_block *sb,
token = match_token(p, tokens, args);
switch (token) {
case Opt_hb_local:
- *mount_opt |= OCFS2_MOUNT_HB_LOCAL;
+ mopt->mount_opt |= OCFS2_MOUNT_HB_LOCAL;
break;
case Opt_hb_none:
- *mount_opt &= ~OCFS2_MOUNT_HB_LOCAL;
+ mopt->mount_opt &= ~OCFS2_MOUNT_HB_LOCAL;
break;
case Opt_barrier:
if (match_int(&args[0], &option)) {
@@ -756,27 +777,27 @@ static int ocfs2_parse_options(struct super_block *sb,
goto bail;
}
if (option)
- *mount_opt |= OCFS2_MOUNT_BARRIER;
+ mopt->mount_opt |= OCFS2_MOUNT_BARRIER;
else
- *mount_opt &= ~OCFS2_MOUNT_BARRIER;
+ mopt->mount_opt &= ~OCFS2_MOUNT_BARRIER;
break;
case Opt_intr:
- *mount_opt &= ~OCFS2_MOUNT_NOINTR;
+ mopt->mount_opt &= ~OCFS2_MOUNT_NOINTR;
break;
case Opt_nointr:
- *mount_opt |= OCFS2_MOUNT_NOINTR;
+ mopt->mount_opt |= OCFS2_MOUNT_NOINTR;
break;
case Opt_err_panic:
- *mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
+ mopt->mount_opt |= OCFS2_MOUNT_ERRORS_PANIC;
break;
case Opt_err_ro:
- *mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
+ mopt->mount_opt &= ~OCFS2_MOUNT_ERRORS_PANIC;
break;
case Opt_data_ordered:
- *mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
+ mopt->mount_opt &= ~OCFS2_MOUNT_DATA_WRITEBACK;
break;
case Opt_data_writeback:
- *mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
+ mopt->mount_opt |= OCFS2_MOUNT_DATA_WRITEBACK;
break;
case Opt_atime_quantum:
if (match_int(&args[0], &option)) {
@@ -784,9 +805,7 @@ static int ocfs2_parse_options(struct super_block *sb,
goto bail;
}
if (option >= 0)
- osb->s_atime_quantum = option;
- else
- osb->s_atime_quantum = OCFS2_DEFAULT_ATIME_QUANTUM;
+ mopt->atime_quantum = option;
break;
case Opt_slot:
option = 0;
@@ -795,7 +814,7 @@ static int ocfs2_parse_options(struct super_block *sb,
goto bail;
}
if (option)
- *slot = (s16)option;
+ mopt->slot = (s16)option;
break;
default:
mlog(ML_ERROR,
@@ -813,6 +832,41 @@ bail:
return status;
}
+static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
+{
+ struct ocfs2_super *osb = OCFS2_SB(mnt->mnt_sb);
+ unsigned long opts = osb->s_mount_opt;
+
+ if (opts & OCFS2_MOUNT_HB_LOCAL)
+ seq_printf(s, ",_netdev,heartbeat=local");
+ else
+ seq_printf(s, ",heartbeat=none");
+
+ if (opts & OCFS2_MOUNT_NOINTR)
+ seq_printf(s, ",nointr");
+
+ if (opts & OCFS2_MOUNT_DATA_WRITEBACK)
+ seq_printf(s, ",data=writeback");
+ else
+ seq_printf(s, ",data=ordered");
+
+ if (opts & OCFS2_MOUNT_BARRIER)
+ seq_printf(s, ",barrier=1");
+
+ if (opts & OCFS2_MOUNT_ERRORS_PANIC)
+ seq_printf(s, ",errors=panic");
+ else
+ seq_printf(s, ",errors=remount-ro");
+
+ if (osb->preferred_slot != OCFS2_INVALID_SLOT)
+ seq_printf(s, ",preferred_slot=%d", osb->preferred_slot);
+
+ if (osb->s_atime_quantum != OCFS2_DEFAULT_ATIME_QUANTUM)
+ seq_printf(s, ",atime_quantum=%u", osb->s_atime_quantum);
+
+ return 0;
+}
+
static int __init ocfs2_init(void)
{
int status;
@@ -984,7 +1038,7 @@ static int ocfs2_initialize_mem_caches(void)
0,
(SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD),
- ocfs2_inode_init_once, NULL);
+ ocfs2_inode_init_once);
if (!ocfs2_inode_cachep)
return -ENOMEM;
@@ -1192,12 +1246,13 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
tmp = ocfs2_request_umount_vote(osb);
if (tmp < 0)
mlog_errno(tmp);
+ }
- if (osb->slot_num != OCFS2_INVALID_SLOT)
- ocfs2_put_slot(osb);
+ if (osb->slot_num != OCFS2_INVALID_SLOT)
+ ocfs2_put_slot(osb);
+ if (osb->dlm)
ocfs2_super_unlock(osb, 1);
- }
ocfs2_release_system_inodes(osb);
@@ -1258,9 +1313,9 @@ static int ocfs2_initialize_super(struct super_block *sb,
struct buffer_head *bh,
int sector_size)
{
- int status = 0;
- int i;
- struct ocfs2_dinode *di = NULL;
+ int status;
+ int i, cbits, bbits;
+ struct ocfs2_dinode *di = (struct ocfs2_dinode *)bh->b_data;
struct inode *inode = NULL;
struct buffer_head *bitmap_bh = NULL;
struct ocfs2_journal *journal;
@@ -1279,9 +1334,12 @@ static int ocfs2_initialize_super(struct super_block *sb,
sb->s_fs_info = osb;
sb->s_op = &ocfs2_sops;
sb->s_export_op = &ocfs2_export_ops;
+ sb->s_time_gran = 1;
sb->s_flags |= MS_NOATIME;
/* this is needed to support O_LARGEFILE */
- sb->s_maxbytes = ocfs2_max_file_offset(sb->s_blocksize_bits);
+ cbits = le32_to_cpu(di->id2.i_super.s_clustersize_bits);
+ bbits = le32_to_cpu(di->id2.i_super.s_blocksize_bits);
+ sb->s_maxbytes = ocfs2_max_file_offset(bbits, cbits);
osb->sb = sb;
/* Save off for ocfs2_rw_direct */
@@ -1341,8 +1399,6 @@ static int ocfs2_initialize_super(struct super_block *sb,
goto bail;
}
- di = (struct ocfs2_dinode *)bh->b_data;
-
osb->max_slots = le16_to_cpu(di->id2.i_super.s_max_slots);
if (osb->max_slots > OCFS2_MAX_SLOTS || osb->max_slots == 0) {
mlog(ML_ERROR, "Invalid number of node slots (%u)\n",
@@ -1578,7 +1634,7 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
static int ocfs2_check_volume(struct ocfs2_super *osb)
{
- int status = 0;
+ int status;
int dirty;
int local;
struct ocfs2_dinode *local_alloc = NULL; /* only used if we
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-01-17 15:03:46 +0000