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| author | Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> | 2008-10-22 14:15:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-23 08:55:02 -0700 |
| commit | 9f818b4ac04f53458d0354950b4f229f54be4dbf (patch) | |
| tree | 2f70be32757ea6b494e4272b7779950b282ed03c /fs/jbd/checkpoint.c | |
| parent | 2d7c820e56ce83b23daee9eb5343730fb309418e (diff) | |
| download | lwn-9f818b4ac04f53458d0354950b4f229f54be4dbf.tar.gz lwn-9f818b4ac04f53458d0354950b4f229f54be4dbf.zip | |
jbd: test BH_Write_EIO to detect errors on metadata buffers
__try_to_free_cp_buf(), __process_buffer(), and __wait_cp_io() test
BH_Uptodate flag to detect write I/O errors on metadata buffers. But by
commit 95450f5a7e53d5752ce1a0d0b8282e10fe745ae0 "ext3: don't read inode
block if the buffer has a write error"(*), BH_Uptodate flag can be set to
inode buffers with BH_Write_EIO in order to avoid reading old inode data.
So now, we have to test BH_Write_EIO flag of checkpointing inode buffers
instead of BH_Uptodate. This patch does it.
Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Acked-by: Jan Kara <jack@suse.cz>
Acked-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/jbd/checkpoint.c')
| -rw-r--r-- | fs/jbd/checkpoint.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/jbd/checkpoint.c b/fs/jbd/checkpoint.c index e29293501d42..fe8521933243 100644 --- a/fs/jbd/checkpoint.c +++ b/fs/jbd/checkpoint.c @@ -94,7 +94,7 @@ static int __try_to_free_cp_buf(struct journal_head *jh) struct buffer_head *bh = jh2bh(jh); if (jh->b_jlist == BJ_None && !buffer_locked(bh) && - !buffer_dirty(bh) && buffer_uptodate(bh)) { + !buffer_dirty(bh) && !buffer_write_io_error(bh)) { JBUFFER_TRACE(jh, "remove from checkpoint list"); ret = __journal_remove_checkpoint(jh) + 1; jbd_unlock_bh_state(bh); @@ -199,7 +199,7 @@ restart: spin_lock(&journal->j_list_lock); goto restart; } - if (unlikely(!buffer_uptodate(bh))) + if (unlikely(buffer_write_io_error(bh))) ret = -EIO; /* @@ -268,7 +268,7 @@ static int __process_buffer(journal_t *journal, struct journal_head *jh, ret = 1; } else if (!buffer_dirty(bh)) { ret = 1; - if (unlikely(!buffer_uptodate(bh))) + if (unlikely(buffer_write_io_error(bh))) ret = -EIO; J_ASSERT_JH(jh, !buffer_jbddirty(bh)); BUFFER_TRACE(bh, "remove from checkpoint"); |