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| author | Jeff Layton | 2019-04-29 18:13:14 +0200 |
|---|---|---|
| committer | Ilya Dryomov | 2019-05-07 19:22:37 +0200 |
| commit | f77f21bb28367d0ac4861a24da1db118bba850e6 (patch) | |
| tree | 09381ee5d6fac1e444a8795da70eb08fe4ce551d /fs/ceph/mds_client.h | |
| parent | ceph: use ceph_mdsc_build_path instead of clone_dentry_name (diff) | |
| download | kernel-qcow2-linux-f77f21bb28367d0ac4861a24da1db118bba850e6.tar.gz kernel-qcow2-linux-f77f21bb28367d0ac4861a24da1db118bba850e6.tar.xz kernel-qcow2-linux-f77f21bb28367d0ac4861a24da1db118bba850e6.zip | |
ceph: use __getname/__putname in ceph_mdsc_build_path
Al suggested we get rid of the kmalloc here and just use __getname
and __putname to get a full PATH_MAX pathname buffer.
Since we build the path in reverse, we continue to return a pointer
to the beginning of the string and the length, and add a new helper
to free the thing at the end.
Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/mds_client.h')
| -rw-r--r-- | fs/ceph/mds_client.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h index 0d1f673a5689..ebcad5afc87b 100644 --- a/fs/ceph/mds_client.h +++ b/fs/ceph/mds_client.h @@ -492,6 +492,12 @@ extern int ceph_iterate_session_caps(struct ceph_mds_session *session, void *arg); extern void ceph_mdsc_pre_umount(struct ceph_mds_client *mdsc); +static inline void ceph_mdsc_free_path(char *path, int len) +{ + if (path) + __putname(path - (PATH_MAX - 1 - len)); +} + extern char *ceph_mdsc_build_path(struct dentry *dentry, int *plen, u64 *base, int stop_on_nosnap); |