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| author | Chris Mason | 2008-01-29 15:59:12 +0100 |
|---|---|---|
| committer | Chris Mason | 2008-09-25 17:03:59 +0200 |
| commit | 70dec8079d78691e476cc6c7cede40656078ad30 (patch) | |
| tree | 19ab80f247fc026c3f5a5713381e98372737227b /fs/btrfs/disk-io.c | |
| parent | Btrfs: Add some extra debugging around file data checksum failures (diff) | |
| download | kernel-qcow2-linux-70dec8079d78691e476cc6c7cede40656078ad30.tar.gz kernel-qcow2-linux-70dec8079d78691e476cc6c7cede40656078ad30.tar.xz kernel-qcow2-linux-70dec8079d78691e476cc6c7cede40656078ad30.zip | |
Btrfs: extent_io and extent_state optimizations
The end_bio routines are changed to take a pointer to the extent state
struct, and the state tree is walked in order to set/clear appropriate
bits as IO completes. This greatly reduces the number of rbtree searches
done by the end_bio handlers, and reduces lock contention.
The extent_io releasepage function is changed to avoid expensive searches
for locked state.
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 4c4ebea0b2a9..e29a0716f6a9 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -274,7 +274,7 @@ int btree_readpage(struct file *file, struct page *page) return extent_read_full_page(tree, page, btree_get_extent); } -static int btree_releasepage(struct page *page, gfp_t unused_gfp_flags) +static int btree_releasepage(struct page *page, gfp_t gfp_flags) { struct extent_io_tree *tree; struct extent_map_tree *map; @@ -282,7 +282,7 @@ static int btree_releasepage(struct page *page, gfp_t unused_gfp_flags) tree = &BTRFS_I(page->mapping->host)->io_tree; map = &BTRFS_I(page->mapping->host)->extent_tree; - ret = try_release_extent_mapping(map, tree, page); + ret = try_release_extent_mapping(map, tree, page, gfp_flags); if (ret == 1) { ClearPagePrivate(page); set_page_private(page, 0); |