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| author | Theodore Ts'o <[email protected]> | 2009-04-07 22:12:43 +0000 |
|---|---|---|
| committer | Theodore Ts'o <[email protected]> | 2009-04-08 17:15:09 +0000 |
| commit | 6e34eeddf7deec1444bbddab533f03f520d8458c (patch) | |
| tree | a0e189c329a15363073eab257a3f704cf778107e /fs/proc/array.c | |
| parent | Linux 2.6.30-rc1 (diff) | |
| download | kernel-6e34eeddf7deec1444bbddab533f03f520d8458c.tar.gz kernel-6e34eeddf7deec1444bbddab533f03f520d8458c.zip | |
block_write_full_page: switch synchronous writes to use WRITE_SYNC_PLUG
Now that we have a distinction between WRITE_SYNC and WRITE_SYNC_PLUG,
use WRITE_SYNC_PLUG in __block_write_full_page() to avoid unplugging
the block device I/O queue between each page that gets flushed out.
Otherwise, when we run sync() or fsync() and we need to write out a
large number of pages, the block device queue will get unplugged
between for every page that is flushed out, which will be a pretty
serious performance regression caused by commit a64c8610.
Signed-off-by: "Theodore Ts'o" <[email protected]>
Diffstat (limited to 'fs/proc/array.c')
0 files changed, 0 insertions, 0 deletions