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| author | Josef Bacik <josef@redhat.com> | 2012-05-23 14:26:42 -0400 |
|---|---|---|
| committer | Josef Bacik <josef@redhat.com> | 2012-05-30 10:23:37 -0400 |
| commit | 8a35d95ff4680a456d3ce47df9638f33d4f54f20 (patch) | |
| tree | 8adb116747b84209406d29767b56e2a6ade2f2f4 /fs/btrfs/btrfs_inode.h | |
| parent | 72ac3c0d7921f943d92d1ef42a549fb52e56817d (diff) | |
| download | op-kernel-dev-8a35d95ff4680a456d3ce47df9638f33d4f54f20.zip op-kernel-dev-8a35d95ff4680a456d3ce47df9638f33d4f54f20.tar.gz | |
Btrfs: fix how we deal with the orphan block rsv
Ceph was hitting this race where we would remove an inode from the per-root
orphan list before we would release the space we had reserved for the inode.
We actually don't need a list or anything, we just need to make sure the
root doesn't try to free up the orphan reserve until after the inodes have
released their reservations. So use an atomic counter instead of a list on
the root and only decrement the counter after we've released our
reservation. I've tested this as well as several others and we no longer
see the warnings that you would see while running ceph. Thanks,
Btrfs: fix how we deal with the orphan block rsv
Ceph was hitting this race where we would remove an inode from the per-root
orphan list before we would release the space we had reserved for the inode.
We actually don't need a list or anything, we just need to make sure the
root doesn't try to free up the orphan reserve until after the inodes have
released their reservations. So use an atomic counter instead of a list on
the root and only decrement the counter after we've released our
reservation. I've tested this as well as several others and we no longer
see the warnings that you would see while running ceph. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
Diffstat (limited to 'fs/btrfs/btrfs_inode.h')
| -rw-r--r-- | fs/btrfs/btrfs_inode.h | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h index 6265edb..ce2c9d6 100644 --- a/fs/btrfs/btrfs_inode.h +++ b/fs/btrfs/btrfs_inode.h @@ -36,6 +36,7 @@ #define BTRFS_INODE_DUMMY 2 #define BTRFS_INODE_IN_DEFRAG 3 #define BTRFS_INODE_DELALLOC_META_RESERVED 4 +#define BTRFS_INODE_HAS_ORPHAN_ITEM 5 /* in memory btrfs inode */ struct btrfs_inode { @@ -70,9 +71,6 @@ struct btrfs_inode { /* used to order data wrt metadata */ struct btrfs_ordered_inode_tree ordered_tree; - /* for keeping track of orphaned inodes */ - struct list_head i_orphan; - /* list of all the delalloc inodes in the FS. There are times we need * to write all the delalloc pages to disk, and this list is used * to walk them all. |
