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Merge git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async-2

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* git://git.kernel.org/pub/scm/linux/kernel/git/arjan/linux-2.6-async-2:
  async: make async a command line option for now
  partial revert of asynchronous inode delete
This commit is contained in:
Linus Torvalds 2009-01-09 15:32:26 -08:00
commit 9a100a4464
2 changed files with 21 additions and 14 deletions
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19
fs/inode.c
View File

@ -1139,11 +1139,16 @@ 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.
*/
static void generic_delete_inode_async(void *data, async_cookie_t cookie)
void generic_delete_inode(struct inode *inode)
{
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) {
@ -1167,16 +1172,6 @@ static void generic_delete_inode_async(void *data, async_cookie_t cookie)
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)

16
kernel/async.c
View File

@ -65,6 +65,8 @@ static LIST_HEAD(async_pending);
static LIST_HEAD(async_running);
static DEFINE_SPINLOCK(async_lock);
static int async_enabled = 0;
struct async_entry {
struct list_head list;
async_cookie_t cookie;
@ -169,7 +171,7 @@ static async_cookie_t __async_schedule(async_func_ptr *ptr, void *data, struct l
* If we're out of memory or if there's too much work
* pending already, we execute synchronously.
*/
if (!entry || atomic_read(&entry_count) > MAX_WORK) {
if (!async_enabled || !entry || atomic_read(&entry_count) > MAX_WORK) {
kfree(entry);
spin_lock_irqsave(&async_lock, flags);
newcookie = next_cookie++;
@ -316,8 +318,18 @@ static int async_manager_thread(void *unused)
static int __init async_init(void)
{
kthread_run(async_manager_thread, NULL, "async/mgr");
if (async_enabled)
kthread_run(async_manager_thread, NULL, "async/mgr");
return 0;
}
static int __init setup_async(char *str)
{
async_enabled = 1;
return 1;
}
__setup("fastboot", setup_async);
core_initcall(async_init);