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| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-10-19 21:17:29 +0200 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-10-19 22:58:38 +0200 |
| commit | b6ee8cd2642f6d822dd1a4ba62298b65ff99b72e (patch) | |
| tree | 7396c32b86b417b3a7158599bbd2aa0889c86c48 /fs/nfs/read.c | |
| parent | NFS: Don't rely on PageError in nfs_readpage_release_partial (diff) | |
| download | linux-b6ee8cd2642f6d822dd1a4ba62298b65ff99b72e.tar.xz linux-b6ee8cd2642f6d822dd1a4ba62298b65ff99b72e.zip | |
NFS: Get rid of the nfs_rdata_mempool
We don't need a mempool in order to guarantee reliable NFS read performance.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/read.c')
| -rw-r--r-- | fs/nfs/read.c | 17 |
1 files changed, 4 insertions, 13 deletions
diff --git a/fs/nfs/read.c b/fs/nfs/read.c index fd58e909842b..8b48ec63f722 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -35,16 +35,13 @@ static const struct rpc_call_ops nfs_read_partial_ops; static const struct rpc_call_ops nfs_read_full_ops; static struct kmem_cache *nfs_rdata_cachep; -static mempool_t *nfs_rdata_mempool; - -#define MIN_POOL_READ (32) struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount) { - struct nfs_read_data *p = mempool_alloc(nfs_rdata_mempool, GFP_KERNEL); + struct nfs_read_data *p; + p = kmem_cache_zalloc(nfs_rdata_cachep, GFP_KERNEL); if (p) { - memset(p, 0, sizeof(*p)); INIT_LIST_HEAD(&p->pages); p->npages = pagecount; if (pagecount <= ARRAY_SIZE(p->page_array)) @@ -52,7 +49,7 @@ struct nfs_read_data *nfs_readdata_alloc(unsigned int pagecount) else { p->pagevec = kcalloc(pagecount, sizeof(struct page *), GFP_KERNEL); if (!p->pagevec) { - mempool_free(p, nfs_rdata_mempool); + kmem_cache_free(nfs_rdata_cachep, p); p = NULL; } } @@ -64,7 +61,7 @@ void nfs_readdata_free(struct nfs_read_data *p) { if (p && (p->pagevec != &p->page_array[0])) kfree(p->pagevec); - mempool_free(p, nfs_rdata_mempool); + kmem_cache_free(nfs_rdata_cachep, p); } void nfs_readdata_release(struct nfs_read_data *rdata) @@ -716,16 +713,10 @@ int __init nfs_init_readpagecache(void) if (nfs_rdata_cachep == NULL) return -ENOMEM; - nfs_rdata_mempool = mempool_create_slab_pool(MIN_POOL_READ, - nfs_rdata_cachep); - if (nfs_rdata_mempool == NULL) - return -ENOMEM; - return 0; } void nfs_destroy_readpagecache(void) { - mempool_destroy(nfs_rdata_mempool); kmem_cache_destroy(nfs_rdata_cachep); } |