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Btrfs: introduce per-subvolume ordered extent list

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The reason we introduce per-subvolume ordered extent list is the same
as the per-subvolume delalloc inode list.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
This commit is contained in:
Miao Xie
2013-05-15 07:48:23 +00:00
committed by Josef Bacik
parent eb73c1b7ce
commit 199c2a9c3d
10 changed files with 144 additions and 59 deletions
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25
fs/btrfs/ctree.h
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@@ -1437,17 +1437,18 @@ struct btrfs_fs_info {
atomic_t open_ioctl_trans;
/*
* this is used by the balancing code to wait for all the pending
* ordered extents
* this is used to protect the following list -- ordered_roots.
*/
spinlock_t ordered_extent_lock;
spinlock_t ordered_root_lock;
/*
* all of the data=ordered extents pending writeback
* all fs/file tree roots in which there are data=ordered extents
* pending writeback are added into this list.
*
* these can span multiple transactions and basically include
* every dirty data page that isn't from nodatacow
*/
struct list_head ordered_extents;
struct list_head ordered_roots;
spinlock_t delalloc_root_lock;
/* all fs/file tree roots that have delalloc inodes. */
@@ -1753,6 +1754,20 @@ struct btrfs_root {
struct list_head delalloc_inodes;
struct list_head delalloc_root;
u64 nr_delalloc_inodes;
/*
* this is used by the balancing code to wait for all the pending
* ordered extents
*/
spinlock_t ordered_extent_lock;
/*
* all of the data=ordered extents pending writeback
* these can span multiple transactions and basically include
* every dirty data page that isn't from nodatacow
*/
struct list_head ordered_extents;
struct list_head ordered_root;
u64 nr_ordered_extents;
};
struct btrfs_ioctl_defrag_range_args {