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authorJesper Juhl <jj@chaosbits.net>2011-07-10 22:54:31 +0200
committerDavid Teigland <teigland@redhat.com>2011-07-11 08:39:42 -0500
commit5d70828a7703b1f68e2fd4ce4b42b28d9623f52b (patch)
tree8ec65e9895776d568a475e3e8796fe9ababe8d2e /fs/dlm/lock.c
parentbcaadf5c1ac4ff84b52174a84adb86a1e3e806dd (diff)
downloadlinux-linaro-stable-5d70828a7703b1f68e2fd4ce4b42b28d9623f52b.tar.gz
dlm: don't do pointless NULL check, use kzalloc and fix order of arguments
In fs/dlm/lock.c in the dlm_scan_waiters() function there are 3 small issues: 1) There's no need to test the return value of the allocation and do a memset if is succeedes. Just use kzalloc() to obtain zeroed memory. 2) Since kfree() handles NULL pointers gracefully, the test of 'warned' against NULL before the kfree() after the loop is completely pointless. Remove it. 3) The arguments to kmalloc() (now kzalloc()) were swapped. Thanks to Dr. David Alan Gilbert for pointing this out. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/dlm/lock.c')
-rw-r--r--fs/dlm/lock.c8
1 files changed, 2 insertions, 6 deletions
diff --git a/fs/dlm/lock.c b/fs/dlm/lock.c
index f71d0b5abd95..84c52e6b8810 100644
--- a/fs/dlm/lock.c
+++ b/fs/dlm/lock.c
@@ -849,9 +849,7 @@ void dlm_scan_waiters(struct dlm_ls *ls)
if (!num_nodes) {
num_nodes = ls->ls_num_nodes;
- warned = kmalloc(GFP_KERNEL, num_nodes * sizeof(int));
- if (warned)
- memset(warned, 0, num_nodes * sizeof(int));
+ warned = kzalloc(num_nodes * sizeof(int), GFP_KERNEL);
}
if (!warned)
continue;
@@ -863,9 +861,7 @@ void dlm_scan_waiters(struct dlm_ls *ls)
dlm_config.ci_waitwarn_us, lkb->lkb_wait_nodeid);
}
mutex_unlock(&ls->ls_waiters_mutex);
-
- if (warned)
- kfree(warned);
+ kfree(warned);
if (debug_expired)
log_debug(ls, "scan_waiters %u warn %u over %d us max %lld us",