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| author | Theodore Ts'o <tytso@mit.edu> | 2009-12-16 01:46:48 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-12-16 16:20:05 +0100 |
| commit | 7bf0dc9b0ca9e9b6524b1f70e0898c7f11eb10be (patch) | |
| tree | 874004884b18603f7fa87083b485a70ff9ea8b8d /fs | |
| parent | const: constify remaining pipe_buf_operations (diff) | |
| download | linux-7bf0dc9b0ca9e9b6524b1f70e0898c7f11eb10be.tar.xz linux-7bf0dc9b0ca9e9b6524b1f70e0898c7f11eb10be.zip | |
ext2: avoid WARN() messages when failing to write to the superblock
This fixes a common warning reported by kerneloops.org
[Kernel summit hacking hour]
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/ext2/super.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/fs/ext2/super.c b/fs/ext2/super.c index 1388802b7803..f9cb54a585ce 100644 --- a/fs/ext2/super.c +++ b/fs/ext2/super.c @@ -1105,9 +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; @@ -1115,6 +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()); |