From 9a18540915faaaadd7f71c16fa877a0c19675923 Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@gmail.com>
Date: Sat, 26 Jul 2008 11:21:37 +0400
Subject: [PATCH] [PATCH 2/2] proc: switch inode number allocation to IDA
proc doesn't use "associate pointer with id" feature of IDR, so switch
to IDA.
NOTE, NOTE, NOTE:
Do not apply if release_inode_number() still mantions MAX_ID_MASK!
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
fs/proc/generic.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index b85e36e153ba..4fb81e9c94e3 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -300,7 +300,7 @@ out:
return rtn;
}
-static DEFINE_IDR(proc_inum_idr);
+static DEFINE_IDA(proc_inum_ida);
static DEFINE_SPINLOCK(proc_inum_lock); /* protects the above */
#define PROC_DYNAMIC_FIRST 0xF0000000U
@@ -315,11 +315,11 @@ static unsigned int get_inode_number(void)
int error;
retry:
- if (idr_pre_get(&proc_inum_idr, GFP_KERNEL) == 0)
+ if (ida_pre_get(&proc_inum_ida, GFP_KERNEL) == 0)
return 0;
spin_lock(&proc_inum_lock);
- error = idr_get_new(&proc_inum_idr, NULL, &i);
+ error = ida_get_new(&proc_inum_ida, &i);
spin_unlock(&proc_inum_lock);
if (error == -EAGAIN)
goto retry;
@@ -328,7 +328,7 @@ retry:
if (i > UINT_MAX - PROC_DYNAMIC_FIRST) {
spin_lock(&proc_inum_lock);
- idr_remove(&proc_inum_idr, i);
+ ida_remove(&proc_inum_ida, i);
spin_unlock(&proc_inum_lock);
}
return PROC_DYNAMIC_FIRST + i;
@@ -337,7 +337,7 @@ retry:
static void release_inode_number(unsigned int inum)
{
spin_lock(&proc_inum_lock);
- idr_remove(&proc_inum_idr, inum - PROC_DYNAMIC_FIRST);
+ ida_remove(&proc_inum_ida, inum - PROC_DYNAMIC_FIRST);
spin_unlock(&proc_inum_lock);
}