diff options
| author | Xiubo Li <xiubli@redhat.com> | 2022-02-15 20:23:14 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2022-03-01 18:26:37 +0100 |
| commit | ab58a5a1c0487b67f7409f39d3c8593d416d4e7f (patch) | |
| tree | 5f31cd00559f75dc0fc46dc6ffcc7fe84c248e4b /fs/ceph/snap.c | |
| parent | 6ddf5f165f13ab623d04aee2a473d35818255199 (diff) | |
ceph: move to a dedicated slabcache for ceph_cap_snap
There could be huge number of capsnaps around at any given time. On
x86_64 the structure is 248 bytes, which will be rounded up to 256 bytes
by kzalloc. Move this to a dedicated slabcache to save 8 bytes for each.
[ jlayton: use kmem_cache_zalloc ]
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/snap.c')
| -rw-r--r-- | fs/ceph/snap.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index b41e6724c591..bc5ec72d958c 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -482,7 +482,7 @@ static void ceph_queue_cap_snap(struct ceph_inode_info *ci) struct ceph_buffer *old_blob = NULL; int used, dirty; - capsnap = kzalloc(sizeof(*capsnap), GFP_NOFS); + capsnap = kmem_cache_zalloc(ceph_cap_snap_cachep, GFP_NOFS); if (!capsnap) { pr_err("ENOMEM allocating ceph_cap_snap on %p\n", inode); return; @@ -603,7 +603,8 @@ update_snapc: spin_unlock(&ci->i_ceph_lock); ceph_buffer_put(old_blob); - kfree(capsnap); + if (capsnap) + kmem_cache_free(ceph_cap_snap_cachep, capsnap); ceph_put_snap_context(old_snapc); } |