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| author | Yongqiang Yang <xiaoqiangnk@gmail.com> | 2011-12-29 02:46:46 +0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2011-12-29 02:46:46 +0400 |
| commit | 1ba37268cd19e5a2a80924bfe8618bf1ba3e8249 (patch) | |
| tree | f4227aaf3963e6c948b01e57c98697e6ab2157d6 /include/linux/jbd2.h | |
| parent | 5872ddaaf05bf25e3ab90580295ebc946405928c (diff) | |
| download | linux-1ba37268cd19e5a2a80924bfe8618bf1ba3e8249.tar.xz | |
jbd2: 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: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux/jbd2.h')
| -rw-r--r-- | include/linux/jbd2.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h index 2092ea21e469..5557baefed60 100644 --- a/include/linux/jbd2.h +++ b/include/linux/jbd2.h @@ -1151,6 +1151,7 @@ extern int jbd2_journal_set_revoke(journal_t *, unsigned long long, tid_t); extern int jbd2_journal_test_revoke(journal_t *, unsigned long long, tid_t); extern void jbd2_journal_clear_revoke(journal_t *); extern void jbd2_journal_switch_revoke_table(journal_t *journal); +extern void jbd2_clear_buffer_revoked_flags(journal_t *journal); /* * The log thread user interface: |