[PATCH 3/6] ceph: return the correct dentry on mkdir

[Christian Brauner]

On Thu, Feb 27, 2025 at 12:32:55PM +1100, NeilBrown wrote:
> ceph already splices the correct dentry (in splice_dentry()) from the
> result of mkdir but does nothing more with it.
> 
> Now that ->mkdir can return a dentry, return the correct dentry.
> 
> Note that previously ceph_mkdir() could call
>    ceph_init_inode_acls()
> on the inode from the wrong dentry, which would be NULL.  This
> is safe as ceph_init_inode_acls() checks for NULL, but is not
> strictly correct.  With this patch, the inode for the returned dentry
> is passed to ceph_init_inode_acls().
> 
> Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko at ibm.com>
> Signed-off-by: NeilBrown <neilb at suse.de>
> ---
>  fs/ceph/dir.c | 24 ++++++++++++++++--------
>  1 file changed, 16 insertions(+), 8 deletions(-)
> 
> diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
> index 39e0f240de06..5e98394e2dca 100644
> --- a/fs/ceph/dir.c
> +++ b/fs/ceph/dir.c
> @@ -1099,6 +1099,7 @@ static struct dentry *ceph_mkdir(struct mnt_idmap *idmap, struct inode *dir,
>  	struct ceph_client *cl = mdsc->fsc->client;
>  	struct ceph_mds_request *req;
>  	struct ceph_acl_sec_ctx as_ctx = {};
> +	struc dentry *ret;

Forgot to mention that I fixed this when I applied.