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| author | Yongqiang Yang <xiaoqiangnk@gmail.com> | 2011-11-19 17:34:29 +0800 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2011-11-22 01:20:53 +0100 |
| commit | 8c111b3f56332a216b18cd57950bdf04ac8f2a98 (patch) | |
| tree | 9295744be006082391c9bfeed2cabf43b29cc4ea /include/linux/jbd.h | |
| parent | 63894ab9f63a688f6b0b8cdd01ac0a9f36d507b8 (diff) | |
| download | op-kernel-dev-8c111b3f56332a216b18cd57950bdf04ac8f2a98.zip op-kernel-dev-8c111b3f56332a216b18cd57950bdf04ac8f2a98.tar.gz | |
jbd: clear revoked flag on buffers before a new transaction started
Currently, we clear revoked flag only when a block is reused. However,
this can tigger a false journal error. Consider a situation when a block
is used as a meta block and is deleted(revoked) in ordered mode, then the
block is allocated as a data block to a file. At this moment, user changes
the file's journal mode from ordered to journaled and truncates the file.
The block will be considered re-revoked by journal because it has revoked
flag still pending from the last transaction and an assertion triggers.
We fix the problem by keeping the revoked status more uptodate - we clear
revoked flag when switching revoke tables to reflect there is no revoked
buffers in current transaction any more.
Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'include/linux/jbd.h')
| -rw-r--r-- | include/linux/jbd.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/jbd.h b/include/linux/jbd.h index c7acdde..492cc12 100644 --- a/include/linux/jbd.h +++ b/include/linux/jbd.h @@ -913,6 +913,7 @@ extern int journal_set_revoke(journal_t *, unsigned int, tid_t); extern int journal_test_revoke(journal_t *, unsigned int, tid_t); extern void journal_clear_revoke(journal_t *); extern void journal_switch_revoke_table(journal_t *journal); +extern void journal_clear_buffer_revoked_flags(journal_t *journal); /* * The log thread user interface: |
