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Diffstat (limited to 'fs/ext2/super.c')
-rw-r--r--fs/ext2/super.c206
1 files changed, 131 insertions, 75 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 1a9ffee47d5..f9cb54a585c 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -58,27 +58,27 @@ void ext2_error (struct super_block * sb, const char * function,
}
va_start(args, fmt);
- printk(KERN_CRIT "EXT2-fs error (device %s): %s: ",sb->s_id, function);
+ printk(KERN_CRIT "EXT2-fs (%s): error: %s: ", sb->s_id, function);
vprintk(fmt, args);
printk("\n");
va_end(args);
if (test_opt(sb, ERRORS_PANIC))
- panic("EXT2-fs panic from previous error\n");
+ panic("EXT2-fs: panic from previous error\n");
if (test_opt(sb, ERRORS_RO)) {
- printk("Remounting filesystem read-only\n");
+ ext2_msg(sb, KERN_CRIT,
+ "error: remounting filesystem read-only");
sb->s_flags |= MS_RDONLY;
}
}
-void ext2_warning (struct super_block * sb, const char * function,
- const char * fmt, ...)
+void ext2_msg(struct super_block *sb, const char *prefix,
+ const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
- printk(KERN_WARNING "EXT2-fs warning (device %s): %s: ",
- sb->s_id, function);
+ printk("%sEXT2-fs (%s): ", prefix, sb->s_id);
vprintk(fmt, args);
printk("\n");
va_end(args);
@@ -91,9 +91,9 @@ void ext2_update_dynamic_rev(struct super_block *sb)
if (le32_to_cpu(es->s_rev_level) > EXT2_GOOD_OLD_REV)
return;
- ext2_warning(sb, __func__,
- "updating to rev %d because of new feature flag, "
- "running e2fsck is recommended",
+ ext2_msg(sb, KERN_WARNING,
+ "warning: updating to rev %d because of "
+ "new feature flag, running e2fsck is recommended",
EXT2_DYNAMIC_REV);
es->s_first_ino = cpu_to_le32(EXT2_GOOD_OLD_FIRST_INO);
@@ -419,10 +419,10 @@ static const match_table_t tokens = {
{Opt_err, NULL}
};
-static int parse_options (char * options,
- struct ext2_sb_info *sbi)
+static int parse_options(char *options, struct super_block *sb)
{
- char * p;
+ char *p;
+ struct ext2_sb_info *sbi = EXT2_SB(sb);
substring_t args[MAX_OPT_ARGS];
int option;
@@ -505,7 +505,8 @@ static int parse_options (char * options,
#else
case Opt_user_xattr:
case Opt_nouser_xattr:
- printk("EXT2 (no)user_xattr options not supported\n");
+ ext2_msg(sb, KERN_INFO, "(no)user_xattr options"
+ "not supported");
break;
#endif
#ifdef CONFIG_EXT2_FS_POSIX_ACL
@@ -518,14 +519,15 @@ static int parse_options (char * options,
#else
case Opt_acl:
case Opt_noacl:
- printk("EXT2 (no)acl options not supported\n");
+ ext2_msg(sb, KERN_INFO,
+ "(no)acl options not supported");
break;
#endif
case Opt_xip:
#ifdef CONFIG_EXT2_FS_XIP
set_opt (sbi->s_mount_opt, XIP);
#else
- printk("EXT2 xip option not supported\n");
+ ext2_msg(sb, KERN_INFO, "xip option not supported");
#endif
break;
@@ -542,19 +544,18 @@ static int parse_options (char * options,
case Opt_quota:
case Opt_usrquota:
case Opt_grpquota:
- printk(KERN_ERR
- "EXT2-fs: quota operations not supported.\n");
-
+ ext2_msg(sb, KERN_INFO,
+ "quota operations not supported");
break;
#endif
case Opt_reservation:
set_opt(sbi->s_mount_opt, RESERVATION);
- printk("reservations ON\n");
+ ext2_msg(sb, KERN_INFO, "reservations ON");
break;
case Opt_noreservation:
clear_opt(sbi->s_mount_opt, RESERVATION);
- printk("reservations OFF\n");
+ ext2_msg(sb, KERN_INFO, "reservations OFF");
break;
case Opt_ignore:
break;
@@ -573,34 +574,40 @@ static int ext2_setup_super (struct super_block * sb,
struct ext2_sb_info *sbi = EXT2_SB(sb);
if (le32_to_cpu(es->s_rev_level) > EXT2_MAX_SUPP_REV) {
- printk ("EXT2-fs warning: revision level too high, "
- "forcing read-only mode\n");
+ ext2_msg(sb, KERN_ERR,
+ "error: revision level too high, "
+ "forcing read-only mode");
res = MS_RDONLY;
}
if (read_only)
return res;
if (!(sbi->s_mount_state & EXT2_VALID_FS))
- printk ("EXT2-fs warning: mounting unchecked fs, "
- "running e2fsck is recommended\n");
+ ext2_msg(sb, KERN_WARNING,
+ "warning: mounting unchecked fs, "
+ "running e2fsck is recommended");
else if ((sbi->s_mount_state & EXT2_ERROR_FS))
- printk ("EXT2-fs warning: mounting fs with errors, "
- "running e2fsck is recommended\n");
+ ext2_msg(sb, KERN_WARNING,
+ "warning: mounting fs with errors, "
+ "running e2fsck is recommended");
else if ((__s16) le16_to_cpu(es->s_max_mnt_count) >= 0 &&
le16_to_cpu(es->s_mnt_count) >=
(unsigned short) (__s16) le16_to_cpu(es->s_max_mnt_count))
- printk ("EXT2-fs warning: maximal mount count reached, "
- "running e2fsck is recommended\n");
+ ext2_msg(sb, KERN_WARNING,
+ "warning: maximal mount count reached, "
+ "running e2fsck is recommended");
else if (le32_to_cpu(es->s_checkinterval) &&
- (le32_to_cpu(es->s_lastcheck) + le32_to_cpu(es->s_checkinterval) <= get_seconds()))
- printk ("EXT2-fs warning: checktime reached, "
- "running e2fsck is recommended\n");
+ (le32_to_cpu(es->s_lastcheck) +
+ le32_to_cpu(es->s_checkinterval) <= get_seconds()))
+ ext2_msg(sb, KERN_WARNING,
+ "warning: checktime reached, "
+ "running e2fsck is recommended");
if (!le16_to_cpu(es->s_max_mnt_count))
es->s_max_mnt_count = cpu_to_le16(EXT2_DFL_MAX_MNT_COUNT);
le16_add_cpu(&es->s_mnt_count, 1);
ext2_write_super(sb);
if (test_opt (sb, DEBUG))
- printk ("[EXT II FS %s, %s, bs=%lu, fs=%lu, gc=%lu, "
- "bpg=%lu, ipg=%lu, mo=%04lx]\n",
+ ext2_msg(sb, KERN_INFO, "%s, %s, bs=%lu, fs=%lu, gc=%lu, "
+ "bpg=%lu, ipg=%lu, mo=%04lx]",
EXT2FS_VERSION, EXT2FS_DATE, sb->s_blocksize,
sbi->s_frag_size,
sbi->s_groups_count,
@@ -767,7 +774,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
*/
blocksize = sb_min_blocksize(sb, BLOCK_SIZE);
if (!blocksize) {
- printk ("EXT2-fs: unable to set blocksize\n");
+ ext2_msg(sb, KERN_ERR, "error: unable to set blocksize");
goto failed_sbi;
}
@@ -783,7 +790,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
}
if (!(bh = sb_bread(sb, logic_sb_block))) {
- printk ("EXT2-fs: unable to read superblock\n");
+ ext2_msg(sb, KERN_ERR, "error: unable to read superblock");
goto failed_sbi;
}
/*
@@ -826,7 +833,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
set_opt(sbi->s_mount_opt, RESERVATION);
- if (!parse_options ((char *) data, sbi))
+ if (!parse_options((char *) data, sb))
goto failed_mount;
sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
@@ -840,8 +847,9 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
(EXT2_HAS_COMPAT_FEATURE(sb, ~0U) ||
EXT2_HAS_RO_COMPAT_FEATURE(sb, ~0U) ||
EXT2_HAS_INCOMPAT_FEATURE(sb, ~0U)))
- printk("EXT2-fs warning: feature flags set on rev 0 fs, "
- "running e2fsck is recommended\n");
+ ext2_msg(sb, KERN_WARNING,
+ "warning: feature flags set on rev 0 fs, "
+ "running e2fsck is recommended");
/*
* Check feature flags regardless of the revision level, since we
* previously didn't change the revision level when setting the flags,
@@ -849,16 +857,16 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
*/
features = EXT2_HAS_INCOMPAT_FEATURE(sb, ~EXT2_FEATURE_INCOMPAT_SUPP);
if (features) {
- printk("EXT2-fs: %s: couldn't mount because of "
- "unsupported optional features (%x).\n",
- sb->s_id, le32_to_cpu(features));
+ ext2_msg(sb, KERN_ERR, "error: couldn't mount because of "
+ "unsupported optional features (%x)",
+ le32_to_cpu(features));
goto failed_mount;
}
if (!(sb->s_flags & MS_RDONLY) &&
(features = EXT2_HAS_RO_COMPAT_FEATURE(sb, ~EXT2_FEATURE_RO_COMPAT_SUPP))){
- printk("EXT2-fs: %s: couldn't mount RDWR because of "
- "unsupported optional features (%x).\n",
- sb->s_id, le32_to_cpu(features));
+ ext2_msg(sb, KERN_ERR, "error: couldn't mount RDWR because of "
+ "unsupported optional features (%x)",
+ le32_to_cpu(features));
goto failed_mount;
}
@@ -866,7 +874,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if (ext2_use_xip(sb) && blocksize != PAGE_SIZE) {
if (!silent)
- printk("XIP: Unsupported blocksize\n");
+ ext2_msg(sb, KERN_ERR,
+ "error: unsupported blocksize for xip");
goto failed_mount;
}
@@ -875,7 +884,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
brelse(bh);
if (!sb_set_blocksize(sb, blocksize)) {
- printk(KERN_ERR "EXT2-fs: blocksize too small for device.\n");
+ ext2_msg(sb, KERN_ERR, "error: blocksize is too small");
goto failed_sbi;
}
@@ -883,14 +892,14 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
offset = (sb_block*BLOCK_SIZE) % blocksize;
bh = sb_bread(sb, logic_sb_block);
if(!bh) {
- printk("EXT2-fs: Couldn't read superblock on "
- "2nd try.\n");
+ ext2_msg(sb, KERN_ERR, "error: couldn't read"
+ "superblock on 2nd try");
goto failed_sbi;
}
es = (struct ext2_super_block *) (((char *)bh->b_data) + offset);
sbi->s_es = es;
if (es->s_magic != cpu_to_le16(EXT2_SUPER_MAGIC)) {
- printk ("EXT2-fs: Magic mismatch, very weird !\n");
+ ext2_msg(sb, KERN_ERR, "error: magic mismatch");
goto failed_mount;
}
}
@@ -906,7 +915,8 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if ((sbi->s_inode_size < EXT2_GOOD_OLD_INODE_SIZE) ||
!is_power_of_2(sbi->s_inode_size) ||
(sbi->s_inode_size > blocksize)) {
- printk ("EXT2-fs: unsupported inode size: %d\n",
+ ext2_msg(sb, KERN_ERR,
+ "error: unsupported inode size: %d",
sbi->s_inode_size);
goto failed_mount;
}
@@ -943,29 +953,33 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if (sb->s_blocksize != bh->b_size) {
if (!silent)
- printk ("VFS: Unsupported blocksize on dev "
- "%s.\n", sb->s_id);
+ ext2_msg(sb, KERN_ERR, "error: unsupported blocksize");
goto failed_mount;
}
if (sb->s_blocksize != sbi->s_frag_size) {
- printk ("EXT2-fs: fragsize %lu != blocksize %lu (not supported yet)\n",
+ ext2_msg(sb, KERN_ERR,
+ "error: fragsize %lu != blocksize %lu"
+ "(not supported yet)",
sbi->s_frag_size, sb->s_blocksize);
goto failed_mount;
}
if (sbi->s_blocks_per_group > sb->s_blocksize * 8) {
- printk ("EXT2-fs: #blocks per group too big: %lu\n",
+ ext2_msg(sb, KERN_ERR,
+ "error: #blocks per group too big: %lu",
sbi->s_blocks_per_group);
goto failed_mount;
}
if (sbi->s_frags_per_group > sb->s_blocksize * 8) {
- printk ("EXT2-fs: #fragments per group too big: %lu\n",
+ ext2_msg(sb, KERN_ERR,
+ "error: #fragments per group too big: %lu",
sbi->s_frags_per_group);
goto failed_mount;
}
if (sbi->s_inodes_per_group > sb->s_blocksize * 8) {
- printk ("EXT2-fs: #inodes per group too big: %lu\n",
+ ext2_msg(sb, KERN_ERR,
+ "error: #inodes per group too big: %lu",
sbi->s_inodes_per_group);
goto failed_mount;
}
@@ -979,13 +993,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
EXT2_DESC_PER_BLOCK(sb);
sbi->s_group_desc = kmalloc (db_count * sizeof (struct buffer_head *), GFP_KERNEL);
if (sbi->s_group_desc == NULL) {
- printk ("EXT2-fs: not enough memory\n");
+ ext2_msg(sb, KERN_ERR, "error: not enough memory");
goto failed_mount;
}
bgl_lock_init(sbi->s_blockgroup_lock);
sbi->s_debts = kcalloc(sbi->s_groups_count, sizeof(*sbi->s_debts), GFP_KERNEL);
if (!sbi->s_debts) {
- printk ("EXT2-fs: not enough memory\n");
+ ext2_msg(sb, KERN_ERR, "error: not enough memory");
goto failed_mount_group_desc;
}
for (i = 0; i < db_count; i++) {
@@ -994,12 +1008,13 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
if (!sbi->s_group_desc[i]) {
for (j = 0; j < i; j++)
brelse (sbi->s_group_desc[j]);
- printk ("EXT2-fs: unable to read group descriptors\n");
+ ext2_msg(sb, KERN_ERR,
+ "error: unable to read group descriptors");
goto failed_mount_group_desc;
}
}
if (!ext2_check_descriptors (sb)) {
- printk ("EXT2-fs: group descriptors corrupted!\n");
+ ext2_msg(sb, KERN_ERR, "group descriptors corrupted");
goto failed_mount2;
}
sbi->s_gdb_count = db_count;
@@ -1032,7 +1047,7 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
ext2_count_dirs(sb));
}
if (err) {
- printk(KERN_ERR "EXT2-fs: insufficient memory\n");
+ ext2_msg(sb, KERN_ERR, "error: insufficient memory");
goto failed_mount3;
}
/*
@@ -1048,27 +1063,28 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
iput(root);
- printk(KERN_ERR "EXT2-fs: corrupt root inode, run e2fsck\n");
+ ext2_msg(sb, KERN_ERR, "error: corrupt root inode, run e2fsck");
goto failed_mount3;
}
sb->s_root = d_alloc_root(root);
if (!sb->s_root) {
iput(root);
- printk(KERN_ERR "EXT2-fs: get root inode failed\n");
+ ext2_msg(sb, KERN_ERR, "error: get root inode failed");
ret = -ENOMEM;
goto failed_mount3;
}
if (EXT2_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL))
- ext2_warning(sb, __func__,
- "mounting ext3 filesystem as ext2");
+ ext2_msg(sb, KERN_WARNING,
+ "warning: mounting ext3 filesystem as ext2");
ext2_setup_super (sb, es, sb->s_flags & MS_RDONLY);
return 0;
cantfind_ext2:
if (!silent)
- printk("VFS: Can't find an ext2 filesystem on dev %s.\n",
- sb->s_id);
+ ext2_msg(sb, KERN_ERR,
+ "error: can't find an ext2 filesystem on dev %s.",
+ sb->s_id);
goto failed_mount;
failed_mount3:
percpu_counter_destroy(&sbi->s_freeblocks_counter);
@@ -1089,9 +1105,30 @@ failed_sbi:
return ret;
}
+static void ext2_clear_super_error(struct super_block *sb)
+{
+ struct buffer_head *sbh = EXT2_SB(sb)->s_sbh;
+
+ if (buffer_write_io_error(sbh)) {
+ /*
+ * Oh, dear. A previous attempt to write the
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ printk(KERN_ERR "EXT2-fs: %s previous I/O error to "
+ "superblock detected", sb->s_id);
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+}
+
static void ext2_commit_super (struct super_block * sb,
struct ext2_super_block * es)
{
+ ext2_clear_super_error(sb);
es->s_wtime = cpu_to_le32(get_seconds());
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
sb->s_dirt = 0;
@@ -1099,6 +1136,7 @@ static void ext2_commit_super (struct super_block * sb,
static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
{
+ ext2_clear_super_error(sb);
es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
es->s_wtime = cpu_to_le32(get_seconds());
@@ -1121,8 +1159,24 @@ static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
static int ext2_sync_fs(struct super_block *sb, int wait)
{
struct ext2_super_block *es = EXT2_SB(sb)->s_es;
+ struct buffer_head *sbh = EXT2_SB(sb)->s_sbh;
lock_kernel();
+ if (buffer_write_io_error(sbh)) {
+ /*
+ * Oh, dear. A previous attempt to write the
+ * superblock failed. This could happen because the
+ * USB device was yanked out. Or it could happen to
+ * be a transient write error and maybe the block will
+ * be remapped. Nothing we can do but to retry the
+ * write and hope for the best.
+ */
+ ext2_msg(sb, KERN_ERR,
+ "previous I/O error to superblock detected\n");
+ clear_buffer_write_io_error(sbh);
+ set_buffer_uptodate(sbh);
+ }
+
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug("setting valid to 0\n");
es->s_state &= cpu_to_le16(~EXT2_VALID_FS);
@@ -1170,7 +1224,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
/*
* Allow the "check" option to be passed as a remount option.
*/
- if (!parse_options (data, sbi)) {
+ if (!parse_options(data, sb)) {
err = -EINVAL;
goto restore_opts;
}
@@ -1182,7 +1236,8 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
EXT2_MOUNT_XIP if not */
if ((ext2_use_xip(sb)) && (sb->s_blocksize != PAGE_SIZE)) {
- printk("XIP: Unsupported blocksize\n");
+ ext2_msg(sb, KERN_WARNING,
+ "warning: unsupported blocksize for xip");
err = -EINVAL;
goto restore_opts;
}
@@ -1191,8 +1246,8 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
if (((sbi->s_mount_opt & EXT2_MOUNT_XIP) !=
(old_mount_opt & EXT2_MOUNT_XIP)) &&
invalidate_inodes(sb)) {
- ext2_warning(sb, __func__, "refusing change of xip flag "
- "with busy inodes while remounting");
+ ext2_msg(sb, KERN_WARNING, "warning: refusing change of "
+ "xip flag with busy inodes while remounting");
sbi->s_mount_opt &= ~EXT2_MOUNT_XIP;
sbi->s_mount_opt |= old_mount_opt & EXT2_MOUNT_XIP;
}
@@ -1216,9 +1271,10 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
__le32 ret = EXT2_HAS_RO_COMPAT_FEATURE(sb,
~EXT2_FEATURE_RO_COMPAT_SUPP);
if (ret) {
- printk("EXT2-fs: %s: couldn't remount RDWR because of "
- "unsupported optional features (%x).\n",
- sb->s_id, le32_to_cpu(ret));
+ ext2_msg(sb, KERN_WARNING,
+ "warning: couldn't remount RDWR because of "
+ "unsupported optional features (%x).",
+ le32_to_cpu(ret));
err = -EROFS;
goto restore_opts;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-30 02:40:26 +0000