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authorChris Mason <clm@fb.com>2014-05-19 20:55:27 -0700
committerChris Mason <clm@fb.com>2014-06-09 17:20:56 -0700
commit0e378df15cd87f540f1ba9503e4aa039e1c72741 (patch)
tree700aee195982d5795f02bdda3038e28c7910484d /fs
parentd4452bc526c431a882cc6ba854619e166cb7dfe4 (diff)
downloadlinux-0e378df15cd87f540f1ba9503e4aa039e1c72741.tar.bz2
Btrfs: cut down stack usage in btree_write_cache_pages
This adds noinline_for_stack to two helpers used by btree_write_cache_pages. It shaves us down from 424 bytes on the stack to 280. Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/btrfs/extent_io.c9
1 files changed, 5 insertions, 4 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 0f425dea4523..51299c261d56 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3393,9 +3393,10 @@ void wait_on_extent_buffer_writeback(struct extent_buffer *eb)
TASK_UNINTERRUPTIBLE);
}
-static int lock_extent_buffer_for_io(struct extent_buffer *eb,
- struct btrfs_fs_info *fs_info,
- struct extent_page_data *epd)
+static noinline_for_stack int
+lock_extent_buffer_for_io(struct extent_buffer *eb,
+ struct btrfs_fs_info *fs_info,
+ struct extent_page_data *epd)
{
unsigned long i, num_pages;
int flush = 0;
@@ -3500,7 +3501,7 @@ static void end_bio_extent_buffer_writepage(struct bio *bio, int err)
bio_put(bio);
}
-static int write_one_eb(struct extent_buffer *eb,
+static noinline_for_stack int write_one_eb(struct extent_buffer *eb,
struct btrfs_fs_info *fs_info,
struct writeback_control *wbc,
struct extent_page_data *epd)