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net/9p: convert to idr_alloc() 

Convert to the much saner new idr interface.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Eric Van Hensbergen <ericvh@gmail.com>
Cc: Ron Minnich <rminnich@sandia.gov>
Cc: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Tejun Heo 2013-02-27 17:04:57 -08:00 committed by Linus Torvalds
parent ee94d523bf
commit 19a101a02e
1 changed files with 6 additions and 11 deletions
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17
net/9p/util.c
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@ -87,23 +87,18 @@ EXPORT_SYMBOL(p9_idpool_destroy);
int p9_idpool_get(struct p9_idpool *p)
{
int i = 0;
int error;
int i;
unsigned long flags;
retry:
if (idr_pre_get(&p->pool, GFP_NOFS) == 0)
return -1;
idr_preload(GFP_NOFS);
spin_lock_irqsave(&p->lock, flags);
/* no need to store exactly p, we just need something non-null */
error = idr_get_new(&p->pool, p, &i);
spin_unlock_irqrestore(&p->lock, flags);
i = idr_alloc(&p->pool, p, 0, 0, GFP_NOWAIT);
if (error == -EAGAIN)
goto retry;
else if (error)
spin_unlock_irqrestore(&p->lock, flags);
idr_preload_end();
if (i < 0)
return -1;
p9_debug(P9_DEBUG_MUX, " id %d pool %p\n", i, p);