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Add support for defragging files via btrfsctl -d. Avoid OOM on extent tree

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defrag.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-09-10 19:58:16 -04:00
committed by David Woodhouse
parent 8e21528f87
commit 86479a04ee
5 changed files with 100 additions and 18 deletions
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16
fs/btrfs/extent_map.c
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@ -10,6 +10,12 @@
#include <linux/blkdev.h>
#include "extent_map.h"
/* temporary define until extent_map moves out of btrfs */
struct kmem_cache *btrfs_cache_create(const char *name, size_t size,
unsigned long extra_flags,
void (*ctor)(void *, struct kmem_cache *,
unsigned long));
static struct kmem_cache *extent_map_cache;
static struct kmem_cache *extent_state_cache;
@ -32,14 +38,12 @@ struct tree_entry {
void __init extent_map_init(void)
{
extent_map_cache = kmem_cache_create("extent_map",
sizeof(struct extent_map), 0,
SLAB_RECLAIM_ACCOUNT |
extent_map_cache = btrfs_cache_create("extent_map",
sizeof(struct extent_map),
SLAB_DESTROY_BY_RCU,
NULL);
extent_state_cache = kmem_cache_create("extent_state",
sizeof(struct extent_state), 0,
SLAB_RECLAIM_ACCOUNT |
extent_state_cache = btrfs_cache_create("extent_state",
sizeof(struct extent_state),
SLAB_DESTROY_BY_RCU,
NULL);
}