2021-12-17 20:43:15

by Trond Myklebust

[permalink] [raw]
Subject: [PATCH 5/5] NFS: Fix the verifier for case sensitive filesystem in nfs_atomic_open()

From: Trond Myklebust <[email protected]>

Signed-off-by: Trond Myklebust <[email protected]>
---
fs/nfs/dir.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index a490704e10ed..9432820ce21c 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:
--
2.33.1