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authorTrond Myklebust <Trond.Myklebust@netapp.com>2013-04-08 21:49:53 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2013-04-08 22:12:42 -0400
commit7a8203d8cbab63b7c556ebd00e12685a3ed176b5 (patch)
treecb96463948894dff1a1a61f2af19c5124056873f /fs/nfs
parent577b42327d707fbe7166aad6902c2eeee6a65015 (diff)
downloadlinux-7a8203d8cbab63b7c556ebd00e12685a3ed176b5.tar.bz2
NFS: Ensure that NFS file unlock waits for readahead to complete
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/file.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 29f4a48a0ee6..a87a44f84113 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -744,6 +744,7 @@ static int
do_unlk(struct file *filp, int cmd, struct file_lock *fl, int is_local)
{
struct inode *inode = filp->f_mapping->host;
+ struct nfs_lock_context *l_ctx;
int status;
/*
@@ -752,6 +753,14 @@ do_unlk(struct file *filp, int cmd, struct file_lock *fl, int is_local)
*/
nfs_sync_mapping(filp->f_mapping);
+ l_ctx = nfs_get_lock_context(nfs_file_open_context(filp));
+ if (!IS_ERR(l_ctx)) {
+ status = nfs_iocounter_wait(&l_ctx->io_count);
+ nfs_put_lock_context(l_ctx);
+ if (status < 0)
+ return status;
+ }
+
/* NOTE: special case
* If we're signalled while cleaning up locks on process exit, we
* still need to complete the unlock.