The patch titled
jbd: test BH_Write_EIO to detect errors on metadata buffers
has been added to the -mm tree. Its filename is
jbd-test-bh_write_eio-to-detect-errors-on-metadata-buffers.patch
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------------------------------------------------------
Subject: jbd: test BH_Write_EIO to detect errors on metadata buffers
From: Hidehiro Kawai <hidehiro.kawai.ez@xxxxxxxxxxx>
__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@xxxxxxxxxxx>
Acked-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/jbd/checkpoint.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff -puN fs/jbd/checkpoint.c~jbd-test-bh_write_eio-to-detect-errors-on-metadata-buffers fs/jbd/checkpoint.c
--- a/fs/jbd/checkpoint.c~jbd-test-bh_write_eio-to-detect-errors-on-metadata-buffers
+++ a/fs/jbd/checkpoint.c
@@ -94,7 +94,7 @@ static int __try_to_free_cp_buf(struct j
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 *j
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");
_
Patches currently in -mm which might be from hidehiro.kawai.ez@xxxxxxxxxxx are
coredump_filter-add-description-of-bit-4.patch
jbd-abort-when-failed-to-log-metadata-buffers.patch
jbd-fix-error-handling-for-checkpoint-io.patch
ext3-add-checks-for-errors-from-jbd.patch
jbd-dont-dirty-original-metadata-buffer-on-abort.patch
jbd-test-bh_write_eio-to-detect-errors-on-metadata-buffers.patch
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