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authorJosef Bacik <josef@redhat.com>2012-03-07 16:20:05 -0500
committerChris Mason <chris.mason@oracle.com>2012-03-26 16:51:07 -0400
commit4f2de97acee6532b36dd6e995b858343771ad126 (patch)
tree240ee16e76f2f2e4850e6fe2e90174e7cd794a9b /fs/btrfs/extent_io.h
parent727011e07cbdf87772fcc1999cccd15cc915eb62 (diff)
Btrfs: set page->private to the eb
We spend a lot of time looking up extent buffers from pages when we could just store the pointer to the eb the page is associated with in page->private. This patch does just that, and it makes things a little simpler and reduces a bit of CPU overhead involved with doing metadata IO. Thanks, Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/extent_io.h')
-rw-r--r--fs/btrfs/extent_io.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 4e38a3d9631..83e432da2e2 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -127,6 +127,7 @@ struct extent_buffer {
unsigned long map_start;
unsigned long map_len;
unsigned long bflags;
+ struct extent_io_tree *tree;
atomic_t refs;
atomic_t pages_reading;
struct list_head leak_list;