Messages in this thread Patch in this message | | | From | T Makphaibulchoke <> | Subject | [PATCH] fs/mbcache.c: replacing __builtin_log2() with ilog2() | Date | Fri, 30 May 2014 11:35:04 -0600 |
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Fixing compiler error with some gcc version(s) that do not support __builtin_log2(). Replacing __builtin_log2() with ilog2().
Signed-off-by: T. Makphaibulchoke <tmac@hp.com> --- fs/mbcache.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/mbcache.c b/fs/mbcache.c index bf166e3..187477d 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)) -- 1.7.11.3
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