Commit 0e378df1 authored by Chris Mason's avatar Chris Mason
Browse files

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: default avatarChris Mason <clm@fb.com>
parent d4452bc5

fs/btrfs/extent_io.c

+5 −4
Original line number Diff line number Diff line
@@ -3393,7 +3393,8 @@ void wait_on_extent_buffer_writeback(struct extent_buffer *eb) 
		    TASK_UNINTERRUPTIBLE);

}



static int lock_extent_buffer_for_io(struct extent_buffer *eb,

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)

{
@@ -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)