Commit 36f5580b authored by Bob Peterson's avatar Bob Peterson Committed by Steven Whitehouse
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GFS2: Use slab for block reservation memory 



This patch changes block reservations so it uses slab storage.

Signed-off-by: default avatarBob Peterson <rpeterso@redhat.com>
Signed-off-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
parent b120193e

fs/gfs2/main.c

+10 −0
Original line number Diff line number Diff line
@@ -143,6 +143,12 @@ static int __init init_gfs2_fs(void) 
	if (!gfs2_quotad_cachep)

		goto fail;



	gfs2_rsrv_cachep = kmem_cache_create("gfs2_mblk",

					     sizeof(struct gfs2_blkreserv),

					       0, 0, NULL);

	if (!gfs2_rsrv_cachep)

		goto fail;



	register_shrinker(&qd_shrinker);



	error = register_filesystem(&gfs2_fs_type);
@@ -186,6 +192,9 @@ static int __init init_gfs2_fs(void) 
	unregister_shrinker(&qd_shrinker);

	gfs2_glock_exit();



	if (gfs2_rsrv_cachep)

		kmem_cache_destroy(gfs2_rsrv_cachep);



	if (gfs2_quotad_cachep)

		kmem_cache_destroy(gfs2_quotad_cachep);
@@ -226,6 +235,7 @@ static void __exit exit_gfs2_fs(void) 
	rcu_barrier();



	mempool_destroy(gfs2_bh_pool);

	kmem_cache_destroy(gfs2_rsrv_cachep);

	kmem_cache_destroy(gfs2_quotad_cachep);

	kmem_cache_destroy(gfs2_rgrpd_cachep);

	kmem_cache_destroy(gfs2_bufdata_cachep);

fs/gfs2/rgrp.c

+11 −8
Original line number Diff line number Diff line
@@ -1002,11 +1002,13 @@ struct gfs2_qadata *gfs2_qadata_get(struct gfs2_inode *ip) 
 * Returns: the struct gfs2_qadata

 */



static struct gfs2_blkreserv *gfs2_blkrsv_get(struct gfs2_inode *ip)

static int gfs2_blkrsv_get(struct gfs2_inode *ip)

{

	BUG_ON(ip->i_res != NULL);

	ip->i_res = kzalloc(sizeof(struct gfs2_blkreserv), GFP_NOFS);

	return ip->i_res;

	ip->i_res = kmem_cache_zalloc(gfs2_rsrv_cachep, GFP_NOFS);

	if (!ip->i_res)

		return -ENOMEM;

	return 0;

}



/**
@@ -1164,7 +1166,7 @@ static int get_local_rgrp(struct gfs2_inode *ip, u64 *last_unlinked) 
static void gfs2_blkrsv_put(struct gfs2_inode *ip)

{

	BUG_ON(ip->i_res == NULL);

	kfree(ip->i_res);

	kmem_cache_free(gfs2_rsrv_cachep, ip->i_res);

	ip->i_res = NULL;

}
@@ -1179,14 +1181,15 @@ int gfs2_inplace_reserve(struct gfs2_inode *ip, u32 requested) 
{

	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);

	struct gfs2_blkreserv *rs;

	int error = 0;

	int error;

	u64 last_unlinked = NO_BLOCK;

	int tries = 0;



	rs = gfs2_blkrsv_get(ip);

	if (!rs)

		return -ENOMEM;

	error = gfs2_blkrsv_get(ip);

	if (error)

		return error;



	rs = ip->i_res;

	rs->rs_requested = requested;

	if (gfs2_assert_warn(sdp, requested)) {

		error = -EINVAL;

fs/gfs2/util.c

+1 −0
Original line number Diff line number Diff line
@@ -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;

struct kmem_cache *gfs2_rsrv_cachep __read_mostly;

mempool_t *gfs2_bh_pool __read_mostly;



void gfs2_assert_i(struct gfs2_sbd *sdp)

fs/gfs2/util.h

+1 −0
Original line number Diff line number Diff line
@@ -152,6 +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 struct kmem_cache *gfs2_rsrv_cachep;

extern mempool_t *gfs2_bh_pool;



static inline unsigned int gfs2_tune_get_i(struct gfs2_tune *gt,