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| author | Chris Mason <chris.mason@oracle.com> | 2007-10-15 22:17:04 +0200 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 17:03:56 +0200 |
| commit | 09e71a326341f40111400c88aaf0498ef622824b (patch) | |
| tree | 82e8f8a412a4403155fe17399456d2f8898715c0 /fs/btrfs/extent_map.h | |
| parent | Btrfs: Cache extent buffer mappings (diff) | |
| download | linux-09e71a326341f40111400c88aaf0498ef622824b.tar.xz linux-09e71a326341f40111400c88aaf0498ef622824b.zip | |
Btrfs: Use an array of pages in the extent buffers to reduce the cost of find_get_page
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_map.h')
| -rw-r--r-- | fs/btrfs/extent_map.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index 4ef8bdd68348..d74a2b3e3b5d 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -62,6 +62,7 @@ struct extent_state { struct list_head list; }; +#define EXTENT_INLINE_PAGES 32 struct extent_buffer { u64 start; unsigned long len; @@ -69,13 +70,12 @@ struct extent_buffer { int flags; struct list_head list; struct list_head leak_list; - struct page *first_page; - struct page *last_page; unsigned long alloc_addr; char *map_token; char *kaddr; unsigned long map_start; unsigned long map_len; + struct page *pages[EXTENT_INLINE_PAGES]; }; typedef struct extent_map *(get_extent_t)(struct inode *inode, |