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-rw-r--r--fs/gfs2/lops.c5
-rw-r--r--fs/gfs2/main.c18
-rw-r--r--fs/gfs2/util.c1
-rw-r--r--fs/gfs2/util.h3
4 files changed, 25 insertions, 2 deletions
diff --git a/fs/gfs2/lops.c b/fs/gfs2/lops.c
index fe369bd..87e6e0d 100644
--- a/fs/gfs2/lops.c
+++ b/fs/gfs2/lops.c
@@ -12,6 +12,7 @@
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
+#include <linux/mempool.h>
#include <linux/gfs2_ondisk.h>
#include <linux/bio.h>
#include <linux/fs.h>
@@ -199,7 +200,7 @@ static void gfs2_fake_write_endio(struct buffer_head *bh, int uptodate)
struct gfs2_sbd *sdp = bd->bd_gl->gl_sbd;
end_buffer_write_sync(bh, uptodate);
- free_buffer_head(bh);
+ mempool_free(bh, gfs2_bh_pool);
unlock_buffer(real_bh);
brelse(real_bh);
if (atomic_dec_and_test(&sdp->sd_log_in_flight))
@@ -220,7 +221,7 @@ static struct buffer_head *gfs2_log_fake_buf(struct gfs2_sbd *sdp,
u64 blkno = gfs2_log_bmap(sdp, sdp->sd_log_flush_head);
struct buffer_head *bh;
- bh = alloc_buffer_head(GFP_NOFS | __GFP_NOFAIL);
+ bh = mempool_alloc(gfs2_bh_pool, GFP_NOFS);
atomic_set(&bh->b_count, 1);
bh->b_state = (1 << BH_Mapped) | (1 << BH_Uptodate) | (1 << BH_Lock);
set_bh_page(bh, real->b_page, bh_offset(real));
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index a8d9bcd0..754426b 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -17,6 +17,7 @@
#include <linux/rcupdate.h>
#include <linux/rculist_bl.h>
#include <linux/atomic.h>
+#include <linux/mempool.h>
#include "gfs2.h"
#include "incore.h"
@@ -69,6 +70,16 @@ static void gfs2_init_gl_aspace_once(void *foo)
address_space_init_once(mapping);
}
+static void *gfs2_bh_alloc(gfp_t mask, void *data)
+{
+ return alloc_buffer_head(mask);
+}
+
+static void gfs2_bh_free(void *ptr, void *data)
+{
+ return free_buffer_head(ptr);
+}
+
/**
* init_gfs2_fs - Register GFS2 as a filesystem
*
@@ -151,6 +162,10 @@ static int __init init_gfs2_fs(void)
gfs2_control_wq = alloc_workqueue("gfs2_control",
WQ_NON_REENTRANT | WQ_UNBOUND | WQ_FREEZABLE, 0);
if (!gfs2_control_wq)
+ goto fail_recovery;
+
+ gfs2_bh_pool = mempool_create(1024, gfs2_bh_alloc, gfs2_bh_free, NULL);
+ if (!gfs2_bh_pool)
goto fail_control;
gfs2_register_debugfs();
@@ -160,6 +175,8 @@ static int __init init_gfs2_fs(void)
return 0;
fail_control:
+ destroy_workqueue(gfs2_control_wq);
+fail_recovery:
destroy_workqueue(gfs_recovery_wq);
fail_wq:
unregister_filesystem(&gfs2meta_fs_type);
@@ -208,6 +225,7 @@ static void __exit exit_gfs2_fs(void)
rcu_barrier();
+ mempool_destroy(gfs2_bh_pool);
kmem_cache_destroy(gfs2_quotad_cachep);
kmem_cache_destroy(gfs2_rgrpd_cachep);
kmem_cache_destroy(gfs2_bufdata_cachep);
diff --git a/fs/gfs2/util.c b/fs/gfs2/util.c
index 5351129..9e7765e 100644
--- a/fs/gfs2/util.c
+++ b/fs/gfs2/util.c
@@ -25,6 +25,7 @@ struct kmem_cache *gfs2_inode_cachep __read_mostly;
struct kmem_cache *gfs2_bufdata_cachep __read_mostly;
struct kmem_cache *gfs2_rgrpd_cachep __read_mostly;
struct kmem_cache *gfs2_quotad_cachep __read_mostly;
+mempool_t *gfs2_bh_pool __read_mostly;
void gfs2_assert_i(struct gfs2_sbd *sdp)
{
diff --git a/fs/gfs2/util.h b/fs/gfs2/util.h
index b432e04..a4ce76c 100644
--- a/fs/gfs2/util.h
+++ b/fs/gfs2/util.h
@@ -10,6 +10,8 @@
#ifndef __UTIL_DOT_H__
#define __UTIL_DOT_H__
+#include <linux/mempool.h>
+
#include "incore.h"
#define fs_printk(level, fs, fmt, arg...) \
@@ -150,6 +152,7 @@ extern struct kmem_cache *gfs2_inode_cachep;
extern struct kmem_cache *gfs2_bufdata_cachep;
extern struct kmem_cache *gfs2_rgrpd_cachep;
extern struct kmem_cache *gfs2_quotad_cachep;
+extern mempool_t *gfs2_bh_pool;
static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,
unsigned int *p)
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