diff options
| author | Theodore Ts'o <tytso@mit.edu> | 2008-11-16 11:05:27 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-12-05 10:55:40 -0800 |
| commit | 171af76fa53d18ff153678c6e2cab68b958073ab (patch) | |
| tree | 914159b2bc28ba550f614e6f355ad03dd308151a /fs/jbd2/journal.c | |
| parent | e76ba9390e4e6892683dced25a6d91a7fcdc3167 (diff) | |
ext4/jbd2: Avoid WARN() messages when failing to write to the superblock
(cherry picked from commit 914258bf2cb22bf4336a1b1d90c551b4b11ca5aa)
This fixes some very common warnings reported by kerneloops.org
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/jbd2/journal.c')
| -rw-r--r-- | fs/jbd2/journal.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index ebe4940dd3d..52d2beec5e7 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1259,6 +1259,22 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait) goto out; } + if (buffer_write_io_error(bh)) { + /* + * Oh, dear. A previous attempt to write the journal + * 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 "JBD2: previous I/O error detected " + "for journal superblock update for %s.\n", + journal->j_devname); + clear_buffer_write_io_error(bh); + set_buffer_uptodate(bh); + } + spin_lock(&journal->j_state_lock); jbd_debug(1,"JBD: updating superblock (start %ld, seq %d, errno %d)\n", journal->j_tail, journal->j_tail_sequence, journal->j_errno); @@ -1270,9 +1286,16 @@ void jbd2_journal_update_superblock(journal_t *journal, int wait) BUFFER_TRACE(bh, "marking dirty"); mark_buffer_dirty(bh); - if (wait) + if (wait) { sync_dirty_buffer(bh); - else + if (buffer_write_io_error(bh)) { + printk(KERN_ERR "JBD2: I/O error detected " + "when updating journal superblock for %s.\n", + journal->j_devname); + clear_buffer_write_io_error(bh); + set_buffer_uptodate(bh); + } + } else ll_rw_block(SWRITE, 1, &bh); out: |