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| author | Chris Mason <chris.mason@oracle.com> | 2008-01-08 15:46:30 -0500 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:03:59 -0400 |
| commit | e2008b61401ecb467a8ce1788fcd2116ae1cfbc1 (patch) | |
| tree | 8f13935108abaca29c894ca1f9309c9813c9e194 /fs/btrfs/disk-io.c | |
| parent | 3063d29f2a4d4a4e9fa1ec77c124514f287c6da7 (diff) | |
| download | lwn-e2008b61401ecb467a8ce1788fcd2116ae1cfbc1.tar.gz lwn-e2008b61401ecb467a8ce1788fcd2116ae1cfbc1.zip | |
Btrfs: Add some simple throttling to wait for data=ordered and snapshot deletion
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 | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 34cf1f1f47be..e0940a39ff07 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -631,6 +631,7 @@ struct btrfs_root *open_ctree(struct super_block *sb) fs_info->tree_root = tree_root; fs_info->extent_root = extent_root; fs_info->sb = sb; + fs_info->throttles = 0; fs_info->mount_opt = 0; fs_info->max_extent = (u64)-1; fs_info->delalloc_bytes = 0; @@ -889,6 +890,12 @@ void btrfs_mark_buffer_dirty(struct extent_buffer *buf) set_extent_buffer_dirty(&BTRFS_I(btree_inode)->extent_tree, buf); } +void btrfs_throttle(struct btrfs_root *root) +{ + if (root->fs_info->throttles) + congestion_wait(WRITE, HZ/10); +} + void btrfs_btree_balance_dirty(struct btrfs_root *root, unsigned long nr) { balance_dirty_pages_ratelimited_nr( |