From 51dfacdef38b1dd6fc58b03dd1725d517516b115 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Sat, 16 Oct 2010 22:34:39 +0200 Subject: 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 Cc: Ted Ts'o Cc: Andrew Morton LKML-Reference: Signed-off-by: Thomas Gleixner --- fs/jbd2/journal.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'fs') 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; -- cgit v1.2.3