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authorJeff Layton <jlayton@redhat.com>2018-03-16 09:47:22 -0400
committerJ. Bruce Fields <bfields@redhat.com>2018-03-19 16:38:13 -0400
commit9258a2d5cd9577ce3175fbb64d6ccd0a77cf6fa7 (patch)
tree45a805bc18b269d6cb7ded51fdae2d0c08d3d326 /fs/nfsd
parent9d7ed1355db5b00b9f9f4c333fc2b1825b0db25a (diff)
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nfsd: move nfs4_client allocation to dedicated slabcache
On x86_64, it's 1152 bytes, so we can avoid wasting 896 bytes each. Signed-off-by: Jeff Layton <jlayton@redhat.com> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Diffstat (limited to 'fs/nfsd')
-rw-r--r--fs/nfsd/nfs4state.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 34e6915831d8..16efbe2b1853 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -98,6 +98,7 @@ enum nfsd4_st_mutex_lock_subclass {
*/
static DECLARE_WAIT_QUEUE_HEAD(close_wq);
+static struct kmem_cache *client_slab;
static struct kmem_cache *openowner_slab;
static struct kmem_cache *lockowner_slab;
static struct kmem_cache *file_slab;
@@ -1794,7 +1795,7 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
struct nfs4_client *clp;
int i;
- clp = kzalloc(sizeof(struct nfs4_client), GFP_KERNEL);
+ clp = kmem_cache_zalloc(client_slab, GFP_KERNEL);
if (clp == NULL)
return NULL;
clp->cl_name.data = kmemdup(name.data, name.len, GFP_KERNEL);
@@ -1825,7 +1826,7 @@ static struct nfs4_client *alloc_client(struct xdr_netobj name)
err_no_hashtbl:
kfree(clp->cl_name.data);
err_no_name:
- kfree(clp);
+ kmem_cache_free(client_slab, clp);
return NULL;
}
@@ -1845,7 +1846,7 @@ free_client(struct nfs4_client *clp)
kfree(clp->cl_ownerstr_hashtbl);
kfree(clp->cl_name.data);
idr_destroy(&clp->cl_stateids);
- kfree(clp);
+ kmem_cache_free(client_slab, clp);
}
/* must be called under the client_lock */
@@ -3471,21 +3472,26 @@ static void nfsd4_init_file(struct knfsd_fh *fh, unsigned int hashval,
void
nfsd4_free_slabs(void)
{
- kmem_cache_destroy(odstate_slab);
+ kmem_cache_destroy(client_slab);
kmem_cache_destroy(openowner_slab);
kmem_cache_destroy(lockowner_slab);
kmem_cache_destroy(file_slab);
kmem_cache_destroy(stateid_slab);
kmem_cache_destroy(deleg_slab);
+ kmem_cache_destroy(odstate_slab);
}
int
nfsd4_init_slabs(void)
{
+ client_slab = kmem_cache_create("nfsd4_clients",
+ sizeof(struct nfs4_client), 0, 0, NULL);
+ if (client_slab == NULL)
+ goto out;
openowner_slab = kmem_cache_create("nfsd4_openowners",
sizeof(struct nfs4_openowner), 0, 0, NULL);
if (openowner_slab == NULL)
- goto out;
+ goto out_free_client_slab;
lockowner_slab = kmem_cache_create("nfsd4_lockowners",
sizeof(struct nfs4_lockowner), 0, 0, NULL);
if (lockowner_slab == NULL)
@@ -3518,6 +3524,8 @@ out_free_lockowner_slab:
kmem_cache_destroy(lockowner_slab);
out_free_openowner_slab:
kmem_cache_destroy(openowner_slab);
+out_free_client_slab:
+ kmem_cache_destroy(client_slab);
out:
dprintk("nfsd4: out of memory while initializing nfsv4\n");
return -ENOMEM;