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authorAlexander Aring <aahringo@redhat.com>2021-11-30 14:47:20 -0500
committerDavid Teigland <teigland@redhat.com>2021-12-07 12:42:26 -0600
commite4dc81ed5a8069b8ae56116058ebbad77ff559ec (patch)
treead2ceb088783ae41b0d8977222c76fc6413354e1 /fs/dlm
parent3af2326ca0a13cf84aeb75e001e757ff3cefeae9 (diff)
downloadlinux-e4dc81ed5a8069b8ae56116058ebbad77ff559ec.tar.bz2
fs: dlm: memory cache for lowcomms hotpath
This patch introduces a kmem cache for dlm_msg handles which are used always if dlm sends a message out. Even if their are covered by midcomms layer or not. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm')
-rw-r--r--fs/dlm/lowcomms.c13
-rw-r--r--fs/dlm/lowcomms.h1
-rw-r--r--fs/dlm/memory.c18
-rw-r--r--fs/dlm/memory.h2
4 files changed, 31 insertions, 3 deletions
diff --git a/fs/dlm/lowcomms.c b/fs/dlm/lowcomms.c
index 300f44c5d132..23a1ff690725 100644
--- a/fs/dlm/lowcomms.c
+++ b/fs/dlm/lowcomms.c
@@ -204,6 +204,11 @@ struct kmem_cache *dlm_lowcomms_writequeue_cache_create(void)
0, 0, writequeue_entry_ctor);
}
+struct kmem_cache *dlm_lowcomms_msg_cache_create(void)
+{
+ return kmem_cache_create("dlm_msg", sizeof(struct dlm_msg), 0, 0, NULL);
+}
+
/* need to held writequeue_lock */
static struct writequeue_entry *con_next_wq(struct connection *con)
{
@@ -750,7 +755,7 @@ static void dlm_msg_release(struct kref *kref)
struct dlm_msg *msg = container_of(kref, struct dlm_msg, ref);
kref_put(&msg->entry->ref, dlm_page_release);
- kfree(msg);
+ dlm_free_msg(msg);
}
static void free_entry(struct writequeue_entry *e)
@@ -1259,7 +1264,7 @@ static struct dlm_msg *dlm_lowcomms_new_msg_con(struct connection *con, int len,
struct writequeue_entry *e;
struct dlm_msg *msg;
- msg = kzalloc(sizeof(*msg), allocation);
+ msg = dlm_allocate_msg(allocation);
if (!msg)
return NULL;
@@ -1267,10 +1272,12 @@ static struct dlm_msg *dlm_lowcomms_new_msg_con(struct connection *con, int len,
e = new_wq_entry(con, len, ppc, cb, data);
if (!e) {
- kfree(msg);
+ dlm_free_msg(msg);
return NULL;
}
+ msg->retransmit = false;
+ msg->orig_msg = NULL;
msg->ppc = *ppc;
msg->len = len;
msg->entry = e;
diff --git a/fs/dlm/lowcomms.h b/fs/dlm/lowcomms.h
index 6c8f4ce457f0..29369feea991 100644
--- a/fs/dlm/lowcomms.h
+++ b/fs/dlm/lowcomms.h
@@ -48,6 +48,7 @@ int dlm_lowcomms_nodes_set_mark(int nodeid, unsigned int mark);
int dlm_lowcomms_addr(int nodeid, struct sockaddr_storage *addr, int len);
void dlm_midcomms_receive_done(int nodeid);
struct kmem_cache *dlm_lowcomms_writequeue_cache_create(void);
+struct kmem_cache *dlm_lowcomms_msg_cache_create(void);
#endif /* __LOWCOMMS_DOT_H__ */
diff --git a/fs/dlm/memory.c b/fs/dlm/memory.c
index 94af986e83c6..ce35c3c19aeb 100644
--- a/fs/dlm/memory.c
+++ b/fs/dlm/memory.c
@@ -17,6 +17,7 @@
static struct kmem_cache *writequeue_cache;
static struct kmem_cache *mhandle_cache;
+static struct kmem_cache *msg_cache;
static struct kmem_cache *lkb_cache;
static struct kmem_cache *rsb_cache;
@@ -36,6 +37,10 @@ int __init dlm_memory_init(void)
if (!lkb_cache)
goto lkb;
+ msg_cache = dlm_lowcomms_msg_cache_create();
+ if (!msg_cache)
+ goto msg;
+
rsb_cache = kmem_cache_create("dlm_rsb", sizeof(struct dlm_rsb),
__alignof__(struct dlm_rsb), 0, NULL);
if (!rsb_cache)
@@ -44,6 +49,8 @@ int __init dlm_memory_init(void)
return 0;
rsb:
+ kmem_cache_destroy(msg_cache);
+msg:
kmem_cache_destroy(lkb_cache);
lkb:
kmem_cache_destroy(mhandle_cache);
@@ -57,6 +64,7 @@ void dlm_memory_exit(void)
{
kmem_cache_destroy(writequeue_cache);
kmem_cache_destroy(mhandle_cache);
+ kmem_cache_destroy(msg_cache);
kmem_cache_destroy(lkb_cache);
kmem_cache_destroy(rsb_cache);
}
@@ -129,3 +137,13 @@ void dlm_free_writequeue(struct writequeue_entry *writequeue)
{
kmem_cache_free(writequeue_cache, writequeue);
}
+
+struct dlm_msg *dlm_allocate_msg(gfp_t allocation)
+{
+ return kmem_cache_alloc(msg_cache, allocation);
+}
+
+void dlm_free_msg(struct dlm_msg *msg)
+{
+ kmem_cache_free(msg_cache, msg);
+}
diff --git a/fs/dlm/memory.h b/fs/dlm/memory.h
index 854269eacd44..7bd3f1a391ca 100644
--- a/fs/dlm/memory.h
+++ b/fs/dlm/memory.h
@@ -24,6 +24,8 @@ struct dlm_mhandle *dlm_allocate_mhandle(void);
void dlm_free_mhandle(struct dlm_mhandle *mhandle);
struct writequeue_entry *dlm_allocate_writequeue(void);
void dlm_free_writequeue(struct writequeue_entry *writequeue);
+struct dlm_msg *dlm_allocate_msg(gfp_t allocation);
+void dlm_free_msg(struct dlm_msg *msg);
#endif /* __MEMORY_DOT_H__ */