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-rw-r--r--fs/nfs/dir.c29
1 files changed, 14 insertions, 15 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 393c48136919..c2207e3f2634 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -669,6 +669,19 @@ static inline unsigned int nfs_lookup_check_intent(struct nameidata *nd, unsigne
669} 669}
670 670
671/* 671/*
672 * Use intent information to check whether or not we're going to do
673 * an O_EXCL create using this path component.
674 */
675static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
676{
677 if (NFS_PROTO(dir)->version == 2)
678 return 0;
679 if (nd == NULL || nfs_lookup_check_intent(nd, LOOKUP_CREATE) == 0)
680 return 0;
681 return (nd->intent.open.flags & O_EXCL) != 0;
682}
683
684/*
672 * Inode and filehandle revalidation for lookups. 685 * Inode and filehandle revalidation for lookups.
673 * 686 *
674 * We force revalidation in the cases where the VFS sets LOOKUP_REVAL, 687 * We force revalidation in the cases where the VFS sets LOOKUP_REVAL,
@@ -754,7 +767,7 @@ static int nfs_lookup_revalidate(struct dentry * dentry, struct nameidata *nd)
754 } 767 }
755 768
756 /* Force a full look up iff the parent directory has changed */ 769 /* Force a full look up iff the parent directory has changed */
757 if (nfs_check_verifier(dir, dentry)) { 770 if (!nfs_is_exclusive_create(dir, nd) && nfs_check_verifier(dir, dentry)) {
758 if (nfs_lookup_verify_inode(inode, nd)) 771 if (nfs_lookup_verify_inode(inode, nd))
759 goto out_zap_parent; 772 goto out_zap_parent;
760 goto out_valid; 773 goto out_valid;
@@ -848,20 +861,6 @@ struct dentry_operations nfs_dentry_operations = {
848 .d_iput = nfs_dentry_iput, 861 .d_iput = nfs_dentry_iput,
849}; 862};
850 863
851/*
852 * Use intent information to check whether or not we're going to do
853 * an O_EXCL create using this path component.
854 */
855static inline
856int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
857{
858 if (NFS_PROTO(dir)->version == 2)
859 return 0;
860 if (nd == NULL || nfs_lookup_check_intent(nd, LOOKUP_CREATE) == 0)
861 return 0;
862 return (nd->intent.open.flags & O_EXCL) != 0;
863}
864
865static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd) 864static struct dentry *nfs_lookup(struct inode *dir, struct dentry * dentry, struct nameidata *nd)
866{ 865{
867 struct dentry *res; 866 struct dentry *res;