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authorYan, Zheng <zheng.yan@oracle.com>2009-11-12 09:36:34 +0000
committerChris Mason <chris.mason@oracle.com>2009-12-17 12:33:35 -0500
commit24bbcf0442ee04660a5a030efdbb6d03f1c275cb (patch)
treeaa57d77d29cc5150b272cc3f6465f10262fcbaac /fs/btrfs/ctree.h
parentf34f57a3ab4e73304d78c125682f1a53cd3975f2 (diff)
Btrfs: Add delayed iput
iput() can trigger new transactions if we are dropping the final reference, so calling it in btrfs_commit_transaction may end up deadlock. This patch adds delayed iput to avoid the issue. Signed-off-by: Yan Zheng <zheng.yan@oracle.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
-rw-r--r--fs/btrfs/ctree.h7
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index a7cac2148c7..1983c889bb1 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -872,6 +872,9 @@ struct btrfs_fs_info {
struct list_head dead_roots;
struct list_head caching_block_groups;
+ spinlock_t delayed_iput_lock;
+ struct list_head delayed_iputs;
+
atomic_t nr_async_submits;
atomic_t async_submit_draining;
atomic_t nr_async_bios;
@@ -2301,7 +2304,7 @@ int btrfs_truncate_inode_items(struct btrfs_trans_handle *trans,
struct inode *inode, u64 new_size,
u32 min_type);
-int btrfs_start_delalloc_inodes(struct btrfs_root *root);
+int btrfs_start_delalloc_inodes(struct btrfs_root *root, int delay_iput);
int btrfs_set_extent_delalloc(struct inode *inode, u64 start, u64 end);
int btrfs_writepages(struct address_space *mapping,
struct writeback_control *wbc);
@@ -2341,6 +2344,8 @@ int btrfs_orphan_del(struct btrfs_trans_handle *trans, struct inode *inode);
void btrfs_orphan_cleanup(struct btrfs_root *root);
int btrfs_cont_expand(struct inode *inode, loff_t size);
int btrfs_invalidate_inodes(struct btrfs_root *root);
+void btrfs_add_delayed_iput(struct inode *inode);
+void btrfs_run_delayed_iputs(struct btrfs_root *root);
extern const struct dentry_operations btrfs_dentry_operations;
/* ioctl.c */