[patch 3/4] mm: filemap: pass __GFP_WRITE from grab_cache_page_write_begin()
From: Johannes Weiner <hidden>
Date: 2011-09-20 13:45:14
Also in:
linux-btrfs, linux-fsdevel, linux-mm, linux-xfs, lkml
Subsystem:
memory management, page cache, the rest · Maintainers:
Andrew Morton, Matthew Wilcox, Linus Torvalds
Tell the page allocator that pages allocated through grab_cache_page_write_begin() are expected to become dirty soon. Signed-off-by: Johannes Weiner <redacted> --- mm/filemap.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/mm/filemap.c b/mm/filemap.c
index 645a080..cf0352d 100644
--- a/mm/filemap.c
+++ b/mm/filemap.c@@ -2349,8 +2349,11 @@ 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:
@@ -2358,7 +2361,7 @@ 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
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