| Message ID | 20230316181413.26916-4-lhenriques@suse.de |
|---|---|
| State | New |
| Headers | show |
| Series | ceph: fscrypt: fix atomic open bug for encrypted directories | expand |
diff --git a/fs/ceph/file.c b/fs/ceph/file.c index dee3b445f415..2448d0f1a9ea 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -795,11 +795,9 @@ 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) {
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> --- fs/ceph/file.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)