diff options
Diffstat (limited to 'fs/nfs/nfs4file.c')
| -rw-r--r-- | fs/nfs/nfs4file.c | 25 |
1 files changed, 2 insertions, 23 deletions
diff --git a/fs/nfs/nfs4file.c b/fs/nfs/nfs4file.c index 5c749b6117bb..1d6b5f4230c9 100644 --- a/fs/nfs/nfs4file.c +++ b/fs/nfs/nfs4file.c @@ -253,7 +253,6 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, struct nfs_server *server = NFS_SERVER(dst_inode); struct inode *src_inode = file_inode(src_file); unsigned int bs = server->clone_blksize; - bool same_inode = false; int ret; /* NFS does not support deduplication. */ @@ -275,20 +274,8 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, goto out; } - if (src_inode == dst_inode) - same_inode = true; - /* XXX: do we lock at all? what if server needs CB_RECALL_LAYOUT? */ - if (same_inode) { - inode_lock(src_inode); - } else if (dst_inode < src_inode) { - inode_lock_nested(dst_inode, I_MUTEX_PARENT); - inode_lock_nested(src_inode, I_MUTEX_CHILD); - } else { - inode_lock_nested(src_inode, I_MUTEX_PARENT); - inode_lock_nested(dst_inode, I_MUTEX_CHILD); - } - + lock_two_nondirectories(src_inode, dst_inode); /* flush all pending writes on both src and dst so that server * has the latest data */ ret = nfs_sync_inode(src_inode); @@ -306,15 +293,7 @@ static loff_t nfs42_remap_file_range(struct file *src_file, loff_t src_off, truncate_inode_pages_range(&dst_inode->i_data, dst_off, dst_off + count - 1); out_unlock: - if (same_inode) { - inode_unlock(src_inode); - } else if (dst_inode < src_inode) { - inode_unlock(src_inode); - inode_unlock(dst_inode); - } else { - inode_unlock(dst_inode); - inode_unlock(src_inode); - } + unlock_two_nondirectories(src_inode, dst_inode); out: return ret < 0 ? ret : count; } |