From: Johannes Weiner <jweiner@xxxxxxxxxx>
Tell the page allocator that pages allocated through
grab_cache_page_write_begin() are expected to become dirty soon.
Signed-off-by: Johannes Weiner <jweiner@xxxxxxxxxx>
Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>
Acked-by: Mel Gorman <mgorman@xxxxxxx>
Reviewed-by: Minchan Kim <minchan.kim@xxxxxxxxx>
Reviewed-by: Michal Hocko <mhocko@xxxxxxx>
---
mm/filemap.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index c0018f2..5344dec 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -2354,8 +2354,11 @@ struct page *grab_cache_page_write_begin(struct address_space *mapping,
pgoff_t index, unsigned flags)
{
int status;
+ gfp_t gfp_mask;
struct page *page;
gfp_t gfp_notmask = 0;
+
+ gfp_mask = mapping_gfp_mask(mapping) | __GFP_WRITE;
if (flags & AOP_FLAG_NOFS)
gfp_notmask = __GFP_FS;
repeat:
@@ -2363,7 +2366,7 @@ repeat:
if (page)
goto found;
- page = __page_cache_alloc(mapping_gfp_mask(mapping) & ~gfp_notmask);
+ page = __page_cache_alloc(gfp_mask & ~gfp_notmask);
if (!page)
return NULL;
status = add_to_page_cache_lru(page, mapping, index,
--
1.7.6.4
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