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authorT Makphaibulchoke <tmac@hp.com>2014-06-25 22:08:29 -0400
committerTheodore Ts'o <tytso@mit.edu>2014-06-25 22:08:29 -0400
commitec7756ae1517af483d995f386936d00a4cb1ab7d (patch)
tree4a8869a07712281563683312eb0b3346b43e90c8 /fs/mbcache.c
parentc5c7b8ddfbf8cb3b2291e515a34ab1b8982f5a2d (diff)
downloadlinux-stericsson-ec7756ae1517af483d995f386936d00a4cb1ab7d.tar.gz
fs/mbcache: replace __builtin_log2() with ilog2()
Fix compiler error with some gcc version(s) that do not support __builtin_log2() by replacing __builtin_log2() with ilog2(). Signed-off-by: T. Makphaibulchoke <tmac@hp.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Reviewed-by: Maciej W. Rozycki <macro@linux-mips.org>
Diffstat (limited to 'fs/mbcache.c')
-rw-r--r--fs/mbcache.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/mbcache.c b/fs/mbcache.c
index bf166e388f0d..187477ded6b3 100644
--- a/fs/mbcache.c
+++ b/fs/mbcache.c
@@ -73,6 +73,7 @@
#include <linux/mbcache.h>
#include <linux/init.h>
#include <linux/blockgroup_lock.h>
+#include <linux/log2.h>
#ifdef MB_CACHE_DEBUG
# define mb_debug(f...) do { \
@@ -93,7 +94,7 @@
#define MB_CACHE_WRITER ((unsigned short)~0U >> 1)
-#define MB_CACHE_ENTRY_LOCK_BITS __builtin_log2(NR_BG_LOCKS)
+#define MB_CACHE_ENTRY_LOCK_BITS ilog2(NR_BG_LOCKS)
#define MB_CACHE_ENTRY_LOCK_INDEX(ce) \
(hash_long((unsigned long)ce, MB_CACHE_ENTRY_LOCK_BITS))