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Subject[PATCH] jffs2: use mutex_is_locked() in __jffs2_flush_wbuf()
Date
Use a helper to test if a mutex is held instead of a hack with
mutex_trylock().

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
---
fs/jffs2/wbuf.c | 3 +--
1 files changed, 1 insertions(+), 2 deletions(-)

diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index 4515bea..a10fb24 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -578,8 +578,7 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
if (!jffs2_is_writebuffered(c))
return 0;

- if (mutex_trylock(&c->alloc_sem)) {
- mutex_unlock(&c->alloc_sem);
+ if (!mutex_is_locked(&c->alloc_sem)) {
printk(KERN_CRIT "jffs2_flush_wbuf() called with alloc_sem not locked!\n");
BUG();
}
--
1.7.4.1


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