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| author | Qi Yong | 2008-02-05 07:29:23 +0100 |
|---|---|---|
| committer | Linus Torvalds | 2008-02-05 18:44:18 +0100 |
| commit | 2d544564f9954860235db97df2e549a66c61f557 (patch) | |
| tree | b539ab01562ae5b92ce365afd32e8fbab74a7e11 /mm/page_alloc.c | |
| parent | mm: don't waste swap on locked pages (diff) | |
| download | kernel-qcow2-linux-2d544564f9954860235db97df2e549a66c61f557.tar.gz kernel-qcow2-linux-2d544564f9954860235db97df2e549a66c61f557.tar.xz kernel-qcow2-linux-2d544564f9954860235db97df2e549a66c61f557.zip | |
skip writing data pages when inode is under I_SYNC
Since I_SYNC was split out from I_LOCK, the concern in commit
4b89eed93e0fa40a63e3d7b1796ec1337ea7a3aa ("Write back inode data pages
even when the inode itself is locked") is not longer valid.
We should revert to the original behavior: in __writeback_single_inode(),
when we find an I_SYNC-ed inode and we're not doing a data-integrity sync,
skip writing entirely. Otherwise, we are double calling do_writepages()
Signed-off-by: Qi Yong <qiyong@fc-cn.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Hugh Dickins <hugh@veritas.com>
Cc: Joern Engel <joern@wohnheim.fh-wedel.de>
Cc: WU Fengguang <wfg@mail.ustc.edu.cn>
Cc: Michael Rubin <mrubin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_alloc.c')
0 files changed, 0 insertions, 0 deletions