diff mbox series

[v17,71/71] ceph: switch ceph_open_atomic() to use the new fscrypt helper

Message ID 20230323065525.201322-72-xiubli@redhat.com
State Superseded
Headers show
Series ceph+fscrypt: full support | expand

Commit Message

Xiubo Li March 23, 2023, 6:55 a.m. UTC 
From: Luís Henriques <lhenriques@suse.de>

Switch ceph_atomic_open() to use new fscrypt helper function
fscrypt_prepare_lookup_partial().  This fixes a bug in the atomic open
operation where a dentry is incorrectly set with DCACHE_NOKEY_NAME when
'dir' has been evicted but the key is still available (for example, where
there's a drop_caches).

Signed-off-by: Luís Henriques <lhenriques@suse.de>
Signed-off-by: Xiubo Li <xiubli@redhat.com>
---
 fs/ceph/file.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)
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Patch

diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 317087ea017e..9e74ed673f93 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -791,11 +791,9 @@  int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
 	ihold(dir);
 	if (IS_ENCRYPTED(dir)) {
 		set_bit(CEPH_MDS_R_FSCRYPT_FILE, &req->r_req_flags);
-		if (!fscrypt_has_encryption_key(dir)) {
-			spin_lock(&dentry->d_lock);
-			dentry->d_flags |= DCACHE_NOKEY_NAME;
-			spin_unlock(&dentry->d_lock);
-		}
+		err = fscrypt_prepare_lookup_partial(dir, dentry);
+		if (err < 0)
+			goto out_req;
 	}
 
 	if (flags & O_CREAT) {