diff options
| author | Akinobu Mita <akinobu.mita@gmail.com> | 2008-04-29 01:03:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-29 08:06:25 -0700 |
| commit | 199f0ca514f9c17668eec4f935c4ba24cd789f85 (patch) | |
| tree | 54406e3eb5be58e3350d8f60a64ac78ec3990f97 /lib/idr.c | |
| parent | 801678c5a3b4c79236970bcca27c733f5559e0d1 (diff) | |
| download | lwn-199f0ca514f9c17668eec4f935c4ba24cd789f85.tar.gz lwn-199f0ca514f9c17668eec4f935c4ba24cd789f85.zip | |
idr: create idr_layer_cache at boot time
Avoid a possible kmem_cache_create() failure by creating idr_layer_cache
unconditionary at boot time rather than creating it on-demand when idr_init()
is called the first time.
This change also enables us to eliminate the check every time idr_init() is
called.
[akpm@linux-foundation.org: rename init_id_cache() to idr_init_cache()]
[akpm@linux-foundation.org: fix alpha build]
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/idr.c')
| -rw-r--r-- | lib/idr.c | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/idr.c b/lib/idr.c index afbb0b1023d4..8368c81fcb7d 100644 --- a/lib/idr.c +++ b/lib/idr.c @@ -585,12 +585,11 @@ static void idr_cache_ctor(struct kmem_cache *idr_layer_cache, void *idr_layer) memset(idr_layer, 0, sizeof(struct idr_layer)); } -static int init_id_cache(void) +void __init idr_init_cache(void) { - if (!idr_layer_cache) - idr_layer_cache = kmem_cache_create("idr_layer_cache", - sizeof(struct idr_layer), 0, 0, idr_cache_ctor); - return 0; + idr_layer_cache = kmem_cache_create("idr_layer_cache", + sizeof(struct idr_layer), 0, SLAB_PANIC, + idr_cache_ctor); } /** @@ -602,7 +601,6 @@ static int init_id_cache(void) */ void idr_init(struct idr *idp) { - init_id_cache(); memset(idp, 0, sizeof(struct idr)); spin_lock_init(&idp->lock); } |