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-rw-r--r--fs/nfs/file.c3
-rw-r--r--include/linux/preempt.h1
2 files changed, 3 insertions, 1 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index eb5cd4c3bbf..7a79fbe9f53 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -509,7 +509,8 @@ static int nfs_lock(struct file *filp, int cmd, struct file_lock *fl)
return -EINVAL;
/* No mandatory locks over NFS */
- if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID)
+ if ((inode->i_mode & (S_ISGID | S_IXGRP)) == S_ISGID &&
+ fl->fl_type != F_UNLCK)
return -ENOLCK;
if (IS_GETLK(cmd))
diff --git a/include/linux/preempt.h b/include/linux/preempt.h
index d9a2f5254a5..5769d14d1e6 100644
--- a/include/linux/preempt.h
+++ b/include/linux/preempt.h
@@ -48,6 +48,7 @@ do { \
#define preempt_enable() \
do { \
preempt_enable_no_resched(); \
+ barrier(); \
preempt_check_resched(); \
} while (0)