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| author | Joseph Qi <joseph.qi@huawei.com> | 2015-09-04 15:43:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-09-04 16:54:41 -0700 |
| commit | acf8fdbe6afb084666df347602fe4258f1cf5fd5 (patch) | |
| tree | 6deb5734c6ed618e21d5d04979e8f6e3e1f651a4 /fs/ocfs2/journal.c | |
| parent | faaebf18f831c1546bdc65ff8f49d2a73e675ded (diff) | |
| download | linux-acf8fdbe6afb084666df347602fe4258f1cf5fd5.tar.gz linux-acf8fdbe6afb084666df347602fe4258f1cf5fd5.tar.bz2 linux-acf8fdbe6afb084666df347602fe4258f1cf5fd5.zip | |
ocfs2: do not BUG if buffer not uptodate in __ocfs2_journal_access
When storage network is unstable, it may trigger the BUG in
__ocfs2_journal_access because of buffer not uptodate. We can retry the
write in this case or return error instead of BUG.
Signed-off-by: Joseph Qi <joseph.qi@huawei.com>
Reported-by: Zhangguanghui <zhang.guanghui@h3c.com>
Tested-by: Zhangguanghui <zhang.guanghui@h3c.com>
Cc: Mark Fasheh <mfasheh@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/journal.c')
| -rw-r--r-- | fs/ocfs2/journal.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c index 5e5626884433..3bfd36a23e40 100644 --- a/fs/ocfs2/journal.c +++ b/fs/ocfs2/journal.c @@ -668,7 +668,23 @@ static int __ocfs2_journal_access(handle_t *handle, mlog(ML_ERROR, "giving me a buffer that's not uptodate!\n"); mlog(ML_ERROR, "b_blocknr=%llu\n", (unsigned long long)bh->b_blocknr); - BUG(); + + lock_buffer(bh); + /* + * A previous attempt to write this buffer head failed. + * Nothing we can do but to retry the write and hope for + * the best. + */ + if (buffer_write_io_error(bh) && !buffer_uptodate(bh)) { + clear_buffer_write_io_error(bh); + set_buffer_uptodate(bh); + } + + if (!buffer_uptodate(bh)) { + unlock_buffer(bh); + return -EIO; + } + unlock_buffer(bh); } /* Set the current transaction information on the ci so |