xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

nfs: make sillyrename an async operation

Browse Source 
A synchronous rename can be interrupted by a SIGKILL. If that happens
during a sillyrename operation, it's possible for the rename call to
be sent to the server, but the task exits before processing the
reply. If this happens, the sillyrenamed file won't get cleaned up
during nfs_dentry_iput and the server is left with a dangling .nfs* file
hanging around.

Fix this problem by turning sillyrename into an asynchronous operation
and have the task doing the sillyrename just wait on the reply. If the
task is killed before the sillyrename completes, it'll still proceed
to completion.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Jeff Layton
2010-09-17 17:31:57 -04:00
committed by Trond Myklebust
parent 779c51795b
commit d3d4152a5d
5 changed files with 263 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
include/linux/nfs_xdr.h
View File

@@ -1018,6 +1018,8 @@ struct nfs_rpc_ops {
int (*unlink_done) (struct rpc_task *, struct inode *);
int (*rename) (struct inode *, struct qstr *,
struct inode *, struct qstr *);
void (*rename_setup) (struct rpc_message *msg, struct inode *dir);
int (*rename_done) (struct rpc_task *task, struct inode *old_dir, struct inode *new_dir);
int (*link) (struct inode *, struct inode *, struct qstr *);
int (*symlink) (struct inode *, struct dentry *, struct page *,
unsigned int, struct iattr *);