[4/4] smb: client: don't clobber ->i_rdev from cached reparse points

Commit Message

Paulo Alcantara Jan. 19, 2024, 4:08 a.m. UTC

Don't clobber ->i_rdev from valid reparse inodes over readdir(2) as it
can't be provided by query dir responses.

Signed-off-by: Paulo Alcantara <[e-mail]>
---
 fs/smb/client/readdir.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Patch

diff --git a/fs/smb/client/readdir.c b/fs/smb/client/readdir.c
index e24684112ab0..94255401b38d 100644
--- a/fs/smb/client/readdir.c
+++ b/fs/smb/client/readdir.c
@@ -133,14 +133,14 @@  cifs_prime_dcache(struct dentry *parent, struct qstr *name,
 				 * Query dir responses don't provide enough
 				 * information about reparse points other than
 				 * their reparse tags.  Save an invalidation by
-				 * not clobbering the existing mode, size and
-				 * symlink target (if any) when reparse tag and
-				 * ctime haven't changed.
+				 * not clobbering some existing attributes when
+				 * reparse tag and ctime haven't changed.
 				 */
 				rc = 0;
 				if (fattr->cf_cifsattrs & ATTR_REPARSE) {
 					if (likely(reparse_inode_match(inode, fattr))) {
 						fattr->cf_mode = inode->i_mode;
+						fattr->cf_rdev = inode->i_rdev;
 						fattr->cf_eof = CIFS_I(inode)->server_eof;
 						fattr->cf_symlink_target = NULL;
 					} else {