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| author | Chris Mason <mason@suse.com> | 2006-09-29 01:59:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-29 09:18:11 -0700 |
| commit | a3172027148120b8f8797cbecc7d0a0b215736a1 (patch) | |
| tree | 9da7b5eafe136c8c5b9e76e9a9cccd70899df252 /include/asm-ppc/ppcboot.h | |
| parent | 25736b1c692d436508585d1d710912e6f76be2d8 (diff) | |
| download | lwn-a3172027148120b8f8797cbecc7d0a0b215736a1.tar.gz lwn-a3172027148120b8f8797cbecc7d0a0b215736a1.zip | |
[PATCH] Fix reiserfs latencies caused by data=ordered
ReiserFS does periodic cleanup of old transactions in order to limit the
length of time a journal replay may take after a crash. Sometimes, writing
metadata from an old (already committed) transaction may require committing
a newer transaction, which also requires writing all data=ordered buffers.
This can cause very long stalls on journal_begin.
This patch makes sure new transactions will not need to be committed before
trying a periodic reclaim of an old transaction. It is low risk because if
a bad decision is made, it just means a slightly longer journal replay
after a crash.
Signed-off-by: Chris Mason <mason@suse.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-ppc/ppcboot.h')
0 files changed, 0 insertions, 0 deletions