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OpenCloudOS-Kernel
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[PATCH 2/2] anondev: switch to IDA 

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
This commit is contained in:
Alexey Dobriyan 2008-08-28 06:26:23 +04:00 committed by Al Viro
parent 6de24f0ed0
commit ad76cbc63b
1 changed files with 5 additions and 5 deletions
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10
fs/super.c
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@ -682,7 +682,7 @@ void emergency_remount(void)
* filesystems which don't use real block-devices. -- jrs
*/
static DEFINE_IDR(unnamed_dev_idr);
static DEFINE_IDA(unnamed_dev_ida);
static DEFINE_SPINLOCK(unnamed_dev_lock);/* protects the above */
int set_anon_super(struct super_block *s, void *data)
@ -691,10 +691,10 @@ int set_anon_super(struct super_block *s, void *data)
int error;
retry:
if (idr_pre_get(&unnamed_dev_idr, GFP_ATOMIC) == 0)
if (ida_pre_get(&unnamed_dev_ida, GFP_ATOMIC) == 0)
return -ENOMEM;
spin_lock(&unnamed_dev_lock);
error = idr_get_new(&unnamed_dev_idr, NULL, &dev);
error = ida_get_new(&unnamed_dev_ida, &dev);
spin_unlock(&unnamed_dev_lock);
if (error == -EAGAIN)
/* We raced and lost with another CPU. */
@ -704,7 +704,7 @@ int set_anon_super(struct super_block *s, void *data)
if ((dev & MAX_ID_MASK) == (1 << MINORBITS)) {
spin_lock(&unnamed_dev_lock);
idr_remove(&unnamed_dev_idr, dev);
ida_remove(&unnamed_dev_ida, dev);
spin_unlock(&unnamed_dev_lock);
return -EMFILE;
}
@ -720,7 +720,7 @@ void kill_anon_super(struct super_block *sb)
generic_shutdown_super(sb);
spin_lock(&unnamed_dev_lock);
idr_remove(&unnamed_dev_idr, slot);
ida_remove(&unnamed_dev_ida, slot);
spin_unlock(&unnamed_dev_lock);
}