Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=f482394ccbca7234d29cc146d4a2b94f976ce5a1
Commit:     f482394ccbca7234d29cc146d4a2b94f976ce5a1
Parent:     3fc74269c8910573a0e9a7bc303752194ce5cae0
Author:     vignesh babu <[EMAIL PROTECTED]>
AuthorDate: Sun Jul 15 23:41:17 2007 -0700
Committer:  Linus Torvalds <[EMAIL PROTECTED]>
CommitDate: Mon Jul 16 09:05:48 2007 -0700

    is_power_of_2(): jbd
    
    Replace (n & (n-1)) in the context of power of 2 checks with
    is_power_of_2().
    
    Signed-off-by: vignesh babu <[EMAIL PROTECTED]>
    Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
    Signed-off-by: Linus Torvalds <[EMAIL PROTECTED]>
---
 fs/jbd/revoke.c  |    5 +++--
 fs/jbd2/revoke.c |    5 +++--
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/fs/jbd/revoke.c b/fs/jbd/revoke.c
index 824e3b7..8db2fa2 100644
--- a/fs/jbd/revoke.c
+++ b/fs/jbd/revoke.c
@@ -68,6 +68,7 @@
 #include <linux/list.h>
 #include <linux/init.h>
 #endif
+#include <linux/log2.h>
 
 static struct kmem_cache *revoke_record_cache;
 static struct kmem_cache *revoke_table_cache;
@@ -211,7 +212,7 @@ int journal_init_revoke(journal_t *journal, int hash_size)
        journal->j_revoke = journal->j_revoke_table[0];
 
        /* Check that the hash_size is a power of two */
-       J_ASSERT ((hash_size & (hash_size-1)) == 0);
+       J_ASSERT(is_power_of_2(hash_size));
 
        journal->j_revoke->hash_size = hash_size;
 
@@ -238,7 +239,7 @@ int journal_init_revoke(journal_t *journal, int hash_size)
        journal->j_revoke = journal->j_revoke_table[1];
 
        /* Check that the hash_size is a power of two */
-       J_ASSERT ((hash_size & (hash_size-1)) == 0);
+       J_ASSERT(is_power_of_2(hash_size));
 
        journal->j_revoke->hash_size = hash_size;
 
diff --git a/fs/jbd2/revoke.c b/fs/jbd2/revoke.c
index 9246e76..28cac04 100644
--- a/fs/jbd2/revoke.c
+++ b/fs/jbd2/revoke.c
@@ -68,6 +68,7 @@
 #include <linux/list.h>
 #include <linux/init.h>
 #endif
+#include <linux/log2.h>
 
 static struct kmem_cache *jbd2_revoke_record_cache;
 static struct kmem_cache *jbd2_revoke_table_cache;
@@ -212,7 +213,7 @@ int jbd2_journal_init_revoke(journal_t *journal, int 
hash_size)
        journal->j_revoke = journal->j_revoke_table[0];
 
        /* Check that the hash_size is a power of two */
-       J_ASSERT ((hash_size & (hash_size-1)) == 0);
+       J_ASSERT(is_power_of_2(hash_size));
 
        journal->j_revoke->hash_size = hash_size;
 
@@ -239,7 +240,7 @@ int jbd2_journal_init_revoke(journal_t *journal, int 
hash_size)
        journal->j_revoke = journal->j_revoke_table[1];
 
        /* Check that the hash_size is a power of two */
-       J_ASSERT ((hash_size & (hash_size-1)) == 0);
+       J_ASSERT(is_power_of_2(hash_size));
 
        journal->j_revoke->hash_size = hash_size;
 
-
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