diff options
| author | Chris Mason | 2008-04-21 16:03:05 +0200 |
|---|---|---|
| committer | Chris Mason | 2008-09-25 17:04:02 +0200 |
| commit | f2d8d74d7874f8f81222363cd6459a365796e35a (patch) | |
| tree | 2d081c85d9e88006f084cc17fc1ffa262b885e37 /fs/btrfs/disk-io.c | |
| parent | Btrfs: Remove debugging statements from the invalidatepage calls (diff) | |
| download | kernel-qcow2-linux-f2d8d74d7874f8f81222363cd6459a365796e35a.tar.gz kernel-qcow2-linux-f2d8d74d7874f8f81222363cd6459a365796e35a.tar.xz kernel-qcow2-linux-f2d8d74d7874f8f81222363cd6459a365796e35a.zip | |
Btrfs: Make an unplug function that doesn't unplug every spindle
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 | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index c829612c797e..7f5aca35494d 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -913,18 +913,22 @@ static int btrfs_congested_fn(void *congested_data, int bdi_bits) void btrfs_unplug_io_fn(struct backing_dev_info *bdi, struct page *page) { - struct list_head *cur; - struct btrfs_device *device; - struct btrfs_fs_info *info; + struct inode *inode = page->mapping->host; + struct extent_map_tree *em_tree; + struct extent_map *em; + u64 offset = page_offset(page); - info = (struct btrfs_fs_info *)bdi->unplug_io_data; - list_for_each(cur, &info->fs_devices->devices) { - device = list_entry(cur, struct btrfs_device, dev_list); - bdi = blk_get_backing_dev_info(device->bdev); - if (bdi->unplug_io_fn) { - bdi->unplug_io_fn(bdi, page); - } - } + em_tree = &BTRFS_I(inode)->extent_tree; + spin_lock(&em_tree->lock); + em = lookup_extent_mapping(em_tree, offset, PAGE_CACHE_SIZE); + spin_unlock(&em_tree->lock); + if (!em) + return; + + offset = offset - em->start; + btrfs_unplug_page(&BTRFS_I(inode)->root->fs_info->mapping_tree, + em->block_start + offset, page); + free_extent_map(em); } static int setup_bdi(struct btrfs_fs_info *info, struct backing_dev_info *bdi) |