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| author | Alex Elder <elder@inktank.com> | 2013-05-01 12:43:04 -0500 |
|---|---|---|
| committer | Alex Elder <elder@inktank.com> | 2013-05-02 11:58:36 -0500 |
| commit | 81b36be4c56299ac4c4c786908cb117ad232b62e (patch) | |
| tree | f1b37087eabc44310bb1a82f4246f5ca0704ebb3 /net | |
| parent | e3d5d6380482b4a5e2e9d0d662f2ef6d56504aef (diff) | |
| download | linux-81b36be4c56299ac4c4c786908cb117ad232b62e.tar.gz linux-81b36be4c56299ac4c4c786908cb117ad232b62e.tar.bz2 linux-81b36be4c56299ac4c4c786908cb117ad232b62e.zip | |
libceph: allocate ceph message data with a slab allocator
Create a slab cache to manage ceph_msg_data structure allocation.
This is part of:
http://tracker.ceph.com/issues/3926
Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ceph/messenger.c | 26 |
1 files changed, 23 insertions, 3 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c index bc1ba4c2605d..eb0a46a49bd4 100644 --- a/net/ceph/messenger.c +++ b/net/ceph/messenger.c @@ -155,6 +155,7 @@ static bool con_flag_test_and_set(struct ceph_connection *con, /* Slab caches for frequently-allocated structures */ static struct kmem_cache *ceph_msg_cache; +static struct kmem_cache *ceph_msg_data_cache; /* static tag bytes (protocol control messages) */ static char tag_msg = CEPH_MSGR_TAG_MSG; @@ -236,11 +237,30 @@ static int ceph_msgr_slab_init(void) ceph_msg_cache = kmem_cache_create("ceph_msg", sizeof (struct ceph_msg), __alignof__(struct ceph_msg), 0, NULL); - return ceph_msg_cache ? 0 : -ENOMEM; + + if (!ceph_msg_cache) + return -ENOMEM; + + BUG_ON(ceph_msg_data_cache); + ceph_msg_data_cache = kmem_cache_create("ceph_msg_data", + sizeof (struct ceph_msg_data), + __alignof__(struct ceph_msg_data), + 0, NULL); + if (ceph_msg_data_cache) + return 0; + + kmem_cache_destroy(ceph_msg_cache); + ceph_msg_cache = NULL; + + return -ENOMEM; } static void ceph_msgr_slab_exit(void) { + BUG_ON(!ceph_msg_data_cache); + kmem_cache_destroy(ceph_msg_data_cache); + ceph_msg_data_cache = NULL; + BUG_ON(!ceph_msg_cache); kmem_cache_destroy(ceph_msg_cache); ceph_msg_cache = NULL; @@ -3008,7 +3028,7 @@ static struct ceph_msg_data *ceph_msg_data_create(enum ceph_msg_data_type type) if (WARN_ON(!ceph_msg_data_type_valid(type))) return NULL; - data = kzalloc(sizeof (*data), GFP_NOFS); + data = kmem_cache_zalloc(ceph_msg_data_cache, GFP_NOFS); if (data) data->type = type; INIT_LIST_HEAD(&data->links); @@ -3026,7 +3046,7 @@ static void ceph_msg_data_destroy(struct ceph_msg_data *data) ceph_pagelist_release(data->pagelist); kfree(data->pagelist); } - kfree(data); + kmem_cache_free(ceph_msg_data_cache, data); } void ceph_msg_data_add_pages(struct ceph_msg *msg, struct page **pages, |