Btrfs: don't set and clear delalloc for O_DIRECT writes
We do this to get the space accounting, but this is just needless churn on the
io_tree, so just drop setting/clearing delalloc and just drop the reserved data
space when we have a successfull allocation. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Chris Mason <clm@fb.com>
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 5a5b902..3b95792 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -7160,7 +7160,7 @@
int ret = 0;
if (create)
- unlock_bits |= EXTENT_DELALLOC | EXTENT_DIRTY;
+ unlock_bits |= EXTENT_DIRTY;
else
len = min_t(u64, len, root->sectorsize);
@@ -7296,11 +7296,7 @@
BTRFS_I(inode)->outstanding_extents++;
spin_unlock(&BTRFS_I(inode)->lock);
}
-
- ret = set_extent_bit(&BTRFS_I(inode)->io_tree, lockstart,
- lockstart + len - 1, EXTENT_DELALLOC, NULL,
- &cached_state, GFP_NOFS);
- BUG_ON(ret);
+ btrfs_free_reserved_data_space(inode, len);
}
/*