[patch 4/4] Btrfs: pass __GFP_WRITE for buffered write page allocations

Johannes Weiner
2011-09-20T13:46:21Z

Tell the page allocator that pages allocated for a buffered write are
expected to become dirty soon.

Signed-off-by: Johannes Weiner <jweiner@redhat.com>
---
fs/btrfs/file.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index e7872e4..ea1b892 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1084,7 +1084,7 @@ static noinline int prepare_pages(struct btrfs_root *root, struct file *file,
again:
for (i = 0; i < num_pages; i++) {
pages[i] = find_or_create_page(inode->i_mapping, index + i,
- GFP_NOFS);
+ GFP_NOFS | __GFP_WRITE);
if (!pages[i]) {
faili = i - 1;
err = -ENOMEM;
--
1.7.6