From: Trond Myklebust <trond.myklebust@hammerspace.com>
Date: Fri, 17 Dec 2021 20:36:58 +0000 (-0500)
Subject: NFS: Fix the verifier for case sensitive filesystem in nfs_atomic_open()
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=68eaba4ca924a97a863c5c81c0b23a11dcb6db90;p=linux.git

NFS: Fix the verifier for case sensitive filesystem in nfs_atomic_open()

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index d2a58f7a73a61..2884138848f4c 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1888,6 +1888,7 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
 	struct iattr attr = { .ia_valid = ATTR_OPEN };
 	struct inode *inode;
 	unsigned int lookup_flags = 0;
+	unsigned long dir_verifier;
 	bool switched = false;
 	int created = 0;
 	int err;
@@ -1961,7 +1962,11 @@ int nfs_atomic_open(struct inode *dir, struct dentry *dentry,
 		switch (err) {
 		case -ENOENT:
 			d_splice_alias(NULL, dentry);
-			nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
+			if (nfs_server_capable(dir, NFS_CAP_CASE_INSENSITIVE))
+				dir_verifier = inode_peek_iversion_raw(dir);
+			else
+				dir_verifier = nfs_save_change_attribute(dir);
+			nfs_set_verifier(dentry, dir_verifier);
 			break;
 		case -EISDIR:
 		case -ENOTDIR: