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async: make the final inode deletion an asynchronous event

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this makes "rm -rf" on a (names cached) kernel tree go from
11.6 to 8.6 seconds on an ext3 filesystem

Signed-off-by: Arjan van de Ven <[email protected]>
This commit is contained in:
Arjan van de Ven 2009-01-06 07:20:54 -08:00
commit efaee19206
3 changed files with 28 additions and 7 deletions
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20
fs/inode.c
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@ -22,6 +22,7 @@
#include <linux/bootmem.h>
#include <linux/inotify.h>
#include <linux/mount.h>
#include <linux/async.h>
/*
* This is needed for the following functions:
@ -1138,16 +1139,11 @@ EXPORT_SYMBOL(remove_inode_hash);
* I_FREEING is set so that no-one will take a new reference to the inode while
* it is being deleted.
*/
void generic_delete_inode(struct inode *inode)
static void generic_delete_inode_async(void *data, async_cookie_t cookie)
{
struct inode *inode = data;
const struct super_operations *op = inode->i_sb->s_op;
list_del_init(&inode->i_list);
list_del_init(&inode->i_sb_list);
inode->i_state |= I_FREEING;
inodes_stat.nr_inodes--;
spin_unlock(&inode_lock);
security_inode_delete(inode);
if (op->delete_inode) {
@ -1171,6 +1167,16 @@ void generic_delete_inode(struct inode *inode)
destroy_inode(inode);
}
void generic_delete_inode(struct inode *inode)
{
list_del_init(&inode->i_list);
list_del_init(&inode->i_sb_list);
inode->i_state |= I_FREEING;
inodes_stat.nr_inodes--;
spin_unlock(&inode_lock);
async_schedule_special(generic_delete_inode_async, inode, &inode->i_sb->s_async_list);
}
EXPORT_SYMBOL(generic_delete_inode);
static void generic_forget_inode(struct inode *inode)