[RFC 18/26] FS: ExtX filesystem defrag

Christoph Lameter
2007-09-01T01:51:51Z

[-- Attachment #1: 0018-slab_defrag_ext234.patch --]
[-- Type: text/plain, Size: 2717 bytes --]

Support defragmentation for extX filesystem inodes

Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
fs/ext2/super.c | 9 +++++++++
fs/ext3/super.c | 8 ++++++++
fs/ext4/super.c | 8 ++++++++
3 files changed, 25 insertions(+)

Index: linux-2.6/fs/ext2/super.c
===================================================================
--- linux-2.6.orig/fs/ext2/super.c 2007-08-28 19:48:06.000000000 -0700
+++ linux-2.6/fs/ext2/super.c 2007-08-28 20:16:05.000000000 -0700
@@ -168,6 +168,12 @@ static void init_once(void * foo, struct
inode_init_once(&ei->vfs_inode);
}

+static void *ext2_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+ return fs_get_inodes(s, nr, v,
+ offsetof(struct ext2_inode_info, vfs_inode));
+}
+
static int init_inodecache(void)
{
ext2_inode_cachep = kmem_cache_create("ext2_inode_cache",
@@ -177,6 +183,9 @@ static int init_inodecache(void)
init_once);
if (ext2_inode_cachep == NULL)
return -ENOMEM;
+
+ kmem_cache_setup_defrag(ext2_inode_cachep,
+ ext2_get_inodes, kick_inodes);
return 0;
}

Index: linux-2.6/fs/ext3/super.c
===================================================================
--- linux-2.6.orig/fs/ext3/super.c 2007-08-28 19:48:06.000000000 -0700
+++ linux-2.6/fs/ext3/super.c 2007-08-28 20:16:05.000000000 -0700
@@ -484,6 +484,12 @@ static void init_once(void * foo, struct
inode_init_once(&ei->vfs_inode);
}

+static void *ext3_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+ return fs_get_inodes(s, nr, v,
+ offsetof(struct ext3_inode_info, vfs_inode));
+}
+
static int init_inodecache(void)
{
ext3_inode_cachep = kmem_cache_create("ext3_inode_cache",
@@ -493,6 +499,8 @@ static int init_inodecache(void)
init_once);
if (ext3_inode_cachep == NULL)
return -ENOMEM;
+ kmem_cache_setup_defrag(ext3_inode_cachep,
+ ext3_get_inodes, kick_inodes);
return 0;
}

Index: linux-2.6/fs/ext4/super.c
===================================================================
--- linux-2.6.orig/fs/ext4/super.c 2007-08-28 19:48:06.000000000 -0700
+++ linux-2.6/fs/ext4/super.c 2007-08-28 20:16:05.000000000 -0700
@@ -535,6 +535,12 @@ static void init_once(void * foo, struct
inode_init_once(&ei->vfs_inode);
}

+static void *ext4_get_inodes(struct kmem_cache *s, int nr, void **v)
+{
+ return fs_get_inodes(s, nr, v,
+ offsetof(struct ext4_inode_info, vfs_inode));
+}
+
static int init_inodecache(void)
{
ext4_inode_cachep = kmem_cache_create("ext4_inode_cache",
@@ -544,6 +550,8 @@ static int init_inodecache(void)
init_once);
if (ext4_inode_cachep == NULL)
return -ENOMEM;
+ kmem_cache_setup_defrag(ext4_inode_cachep,
+ ext4_get_inodes, kick_inodes);
return 0;
}

--