diff options
| author | Fengguang Wu <[email protected]> | 2012-03-21 16:34:08 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2012-03-21 17:54:58 -0700 |
| commit | 1010bb1b80edb0713415dfe1f97114d320f58c4f (patch) | |
| tree | 70aeaba13b61aa442e0c48c99a1035e204910982 | |
| parent | a05b0855fd15504972dba2358e5faa172a1e50ba (diff) | |
mm: don't set __GFP_WRITE on ramfs/sysfs writes
There is not much point in skipping zones during allocation based on the
dirty usage which they'll never contribute to. And we'd like to avoid
page reclaim waits when writing to ramfs/sysfs etc.
Signed-off-by: Fengguang Wu <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Cc: Jan Kara <[email protected]>
Cc: Greg Thelen <[email protected]>
Cc: Ying Han <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Mel Gorman <[email protected]>
Acked-by: Minchan Kim <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | mm/filemap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 2f8165075a5a..e8cf8aefd6f6 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2341,7 +2341,9 @@ struct page *grab_cache_page_write_begin(struct address_space *mapping, struct page *page; gfp_t gfp_notmask = 0; - gfp_mask = mapping_gfp_mask(mapping) | __GFP_WRITE; + gfp_mask = mapping_gfp_mask(mapping); + if (mapping_cap_account_dirty(mapping)) + gfp_mask |= __GFP_WRITE; if (flags & AOP_FLAG_NOFS) gfp_notmask = __GFP_FS; repeat: |