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| 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/super.c | |
| parent | ceph: add getvxattr op (diff) | |
| download | linux-dev-ab58a5a1c0487b67f7409f39d3c8593d416d4e7f.tar.xz linux-dev-ab58a5a1c0487b67f7409f39d3c8593d416d4e7f.zip | |
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 '')
| -rw-r--r-- | fs/ceph/super.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c index bf79f369aec6..978463fa822c 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -864,6 +864,7 @@ static void destroy_fs_client(struct ceph_fs_client *fsc) */ struct kmem_cache *ceph_inode_cachep; struct kmem_cache *ceph_cap_cachep; +struct kmem_cache *ceph_cap_snap_cachep; struct kmem_cache *ceph_cap_flush_cachep; struct kmem_cache *ceph_dentry_cachep; struct kmem_cache *ceph_file_cachep; @@ -892,6 +893,9 @@ static int __init init_caches(void) ceph_cap_cachep = KMEM_CACHE(ceph_cap, SLAB_MEM_SPREAD); if (!ceph_cap_cachep) goto bad_cap; + ceph_cap_snap_cachep = KMEM_CACHE(ceph_cap_snap, SLAB_MEM_SPREAD); + if (!ceph_cap_snap_cachep) + goto bad_cap_snap; ceph_cap_flush_cachep = KMEM_CACHE(ceph_cap_flush, SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD); if (!ceph_cap_flush_cachep) @@ -931,6 +935,8 @@ bad_file: bad_dentry: kmem_cache_destroy(ceph_cap_flush_cachep); bad_cap_flush: + kmem_cache_destroy(ceph_cap_snap_cachep); +bad_cap_snap: kmem_cache_destroy(ceph_cap_cachep); bad_cap: kmem_cache_destroy(ceph_inode_cachep); @@ -947,6 +953,7 @@ static void destroy_caches(void) kmem_cache_destroy(ceph_inode_cachep); kmem_cache_destroy(ceph_cap_cachep); + kmem_cache_destroy(ceph_cap_snap_cachep); kmem_cache_destroy(ceph_cap_flush_cachep); kmem_cache_destroy(ceph_dentry_cachep); kmem_cache_destroy(ceph_file_cachep); |