From: Josef Bacik Date: Wed, 5 Oct 2011 14:00:18 +0000 (-0400) Subject: Btrfs: don't skip writing out a empty block groups cache X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f75b130e9bb361850787e156c79311adb84f551e;p=GitHub%2Fexynos8895%2Fandroid_kernel_samsung_universal8895.git Btrfs: don't skip writing out a empty block groups cache I noticed a slight bug where we will not bother writing out the block group cache's space cache if it's space tree is empty. Since it could have a cluster or pinned extents that need to be written out this is just not a valid test. Thanks, Signed-off-by: Josef Bacik --- diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c index 0a8ccdbdd464..b81556ca75ea 100644 --- a/fs/btrfs/free-space-cache.c +++ b/fs/btrfs/free-space-cache.c @@ -575,10 +575,6 @@ int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode, INIT_LIST_HEAD(&bitmap_list); - node = rb_first(&ctl->free_space_offset); - if (!node) - return -1; - if (!i_size_read(inode)) return -1; @@ -639,6 +635,12 @@ int __btrfs_write_out_cache(struct btrfs_root *root, struct inode *inode, if (block_group) start = block_group->key.objectid; + node = rb_first(&ctl->free_space_offset); + if (!node && cluster) { + node = rb_first(&cluster->root); + cluster = NULL; + } + /* Write out the extent entries */ do { struct btrfs_free_space_entry *entry;