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| author |   Jeff Layton <jlayton@kernel.org> | 2020-02-17 18:38:37 -0500 |
|---|---|---|
| committer |   Ilya Dryomov <idryomov@gmail.com> | 2020-03-30 12:42:41 +0200 |
| commit | 058daab79d6b597a20fd49b5e445b1b2929c2c1c (patch) | |
| tree | 28d3e3653be881b507005aea65b8e60d1cc12596 /fs/ceph/super.c | |
| parent | ceph: reorganize fields in ceph_mds_request (diff) | |
| download | linux-dev-058daab79d6b597a20fd49b5e445b1b2929c2c1c.tar.xz linux-dev-058daab79d6b597a20fd49b5e445b1b2929c2c1c.zip | |
ceph: move to a dedicated slabcache for mds requests
On my machine (x86_64) this struct is 952 bytes, which gets rounded up
to 1024 by kmalloc. Move this to a dedicated slabcache, so we can
allocate them without the extra 72 bytes of overhead per.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to '')
| -rw-r--r-- | fs/ceph/super.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/ceph/super.c b/fs/ceph/super.c index c7f150686a53..b1329cd5388a 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -729,6 +729,7 @@ struct kmem_cache *ceph_cap_flush_cachep; struct kmem_cache *ceph_dentry_cachep; struct kmem_cache *ceph_file_cachep; struct kmem_cache *ceph_dir_file_cachep; +struct kmem_cache *ceph_mds_request_cachep; static void ceph_inode_init_once(void *foo) { @@ -769,6 +770,10 @@ static int __init init_caches(void) if (!ceph_dir_file_cachep) goto bad_dir_file; + ceph_mds_request_cachep = KMEM_CACHE(ceph_mds_request, SLAB_MEM_SPREAD); + if (!ceph_mds_request_cachep) + goto bad_mds_req; + error = ceph_fscache_register(); if (error) goto bad_fscache; @@ -776,6 +781,8 @@ static int __init init_caches(void) return 0; bad_fscache: + kmem_cache_destroy(ceph_mds_request_cachep); +bad_mds_req: kmem_cache_destroy(ceph_dir_file_cachep); bad_dir_file: kmem_cache_destroy(ceph_file_cachep); @@ -804,6 +811,7 @@ static void destroy_caches(void) kmem_cache_destroy(ceph_dentry_cachep); kmem_cache_destroy(ceph_file_cachep); kmem_cache_destroy(ceph_dir_file_cachep); + kmem_cache_destroy(ceph_mds_request_cachep); ceph_fscache_unregister(); } |