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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-10-17 00:34:39 +0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-10-30 14:12:50 +0400 |
| commit | 51dfacdef38b1dd6fc58b03dd1725d517516b115 (patch) | |
| tree | 71db75044a42f316c5956bb807f9846c14d12b16 /fs | |
| parent | 117bf5fbdbdc7a5394e5718b3354238961c83067 (diff) | |
| download | linux-51dfacdef38b1dd6fc58b03dd1725d517516b115.tar.xz | |
jbd2: Convert jbd2_slab_create_sem to mutex
jbd2_slab_create_sem is used as a mutex, so make it one.
[ akpm muttered: We may as well make it local to
jbd2_journal_create_slab() also. ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ted Ts'o <tytso@mit.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <alpine.LFD.2.00.1010162231480.2496@localhost6.localdomain6>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/jbd2/journal.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/jbd2/journal.c b/fs/jbd2/journal.c index 538417c1fdbb..c590d155c095 100644 --- a/fs/jbd2/journal.c +++ b/fs/jbd2/journal.c @@ -1838,7 +1838,6 @@ size_t journal_tag_bytes(journal_t *journal) */ #define JBD2_MAX_SLABS 8 static struct kmem_cache *jbd2_slab[JBD2_MAX_SLABS]; -static DECLARE_MUTEX(jbd2_slab_create_sem); static const char *jbd2_slab_names[JBD2_MAX_SLABS] = { "jbd2_1k", "jbd2_2k", "jbd2_4k", "jbd2_8k", @@ -1859,6 +1858,7 @@ static void jbd2_journal_destroy_slabs(void) static int jbd2_journal_create_slab(size_t size) { + static DEFINE_MUTEX(jbd2_slab_create_mutex); int i = order_base_2(size) - 10; size_t slab_size; @@ -1870,16 +1870,16 @@ static int jbd2_journal_create_slab(size_t size) if (unlikely(i < 0)) i = 0; - down(&jbd2_slab_create_sem); + mutex_lock(&jbd2_slab_create_mutex); if (jbd2_slab[i]) { - up(&jbd2_slab_create_sem); + mutex_unlock(&jbd2_slab_create_mutex); return 0; /* Already created */ } slab_size = 1 << (i+10); jbd2_slab[i] = kmem_cache_create(jbd2_slab_names[i], slab_size, slab_size, 0, NULL); - up(&jbd2_slab_create_sem); + mutex_unlock(&jbd2_slab_create_mutex); if (!jbd2_slab[i]) { printk(KERN_EMERG "JBD2: no memory for jbd2_slab cache\n"); return -ENOMEM; |