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Commit f482394c authored by vignesh babu's avatar vignesh babu Committed by Linus Torvalds
Browse files

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: default avatarvignesh babu <vignesh.babu@wipro.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3fc74269

fs/jbd/revoke.c

+3 −2
Original line number Diff line number Diff line
@@ -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;

fs/jbd2/revoke.c

+3 −2
Original line number Diff line number Diff line
@@ -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;