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Btrfs: introduce per-subvolume delalloc inode list

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When we create a snapshot, we need flush all delalloc inodes in the
fs, just flushing the inodes in the source tree is OK. So we introduce
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 07:48:22 +00:00
committed by Josef Bacik
parent b0feb9d96e
commit eb73c1b7ce
7 changed files with 183 additions and 67 deletions
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22
fs/btrfs/ctree.h
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@@ -1449,13 +1449,9 @@ struct btrfs_fs_info {
*/
struct list_head ordered_extents;
spinlock_t delalloc_lock;
/*
* all of the inodes that have delalloc bytes. It is possible for
* this list to be empty even when there is still dirty data=ordered
* extents waiting to finish IO.
*/
struct list_head delalloc_inodes;
spinlock_t delalloc_root_lock;
/* all fs/file tree roots that have delalloc inodes. */
struct list_head delalloc_roots;
/*
* there is a pool of worker threads for checksumming during writes
@@ -1747,6 +1743,16 @@ struct btrfs_root {
spinlock_t root_item_lock;
atomic_t refs;
spinlock_t delalloc_lock;
/*
* all of the inodes that have delalloc bytes. It is possible for
* this list to be empty even when there is still dirty data=ordered
* extents waiting to finish IO.
*/
struct list_head delalloc_inodes;
struct list_head delalloc_root;
u64 nr_delalloc_inodes;
};
struct btrfs_ioctl_defrag_range_args {
@@ -3550,6 +3556,8 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
u32 min_type);
int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput);
int btrfs_start_all_delalloc_inodes(struct btrfs_fs_info *fs_info,
int delay_iput);
int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end,
struct extent_state **cached_state);
int btrfs_create_subvol_root(struct btrfs_trans_handle *trans,