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| author | Wei Yongjun <yongjun_wei@trendmicro.com.cn> | 2012-09-26 20:43:37 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2012-09-26 20:43:37 -0400 |
| commit | 85556c9a503ababa889bd7bb7a9b3effba795d00 (patch) | |
| tree | c006a06209ee01d2ea46f8a6000d18742cceb640 /fs/ext4/mballoc.c | |
| parent | 8c85447391735469f407add6fdb0630ce59d7f6d (diff) | |
| download | op-kernel-dev-85556c9a503ababa889bd7bb7a9b3effba795d00.zip op-kernel-dev-85556c9a503ababa889bd7bb7a9b3effba795d00.tar.gz | |
ext4: use kmem_cache_zalloc instead of kmem_cache_alloc/memset
Using kmem_cache_zalloc() instead of kmem_cache_alloc() and memset().
spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/mballoc.c')
| -rw-r--r-- | fs/ext4/mballoc.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c index bb821a9..8ec6f88 100644 --- a/fs/ext4/mballoc.c +++ b/fs/ext4/mballoc.c @@ -2232,12 +2232,11 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group, sbi->s_group_info[group >> EXT4_DESC_PER_BLOCK_BITS(sb)]; i = group & (EXT4_DESC_PER_BLOCK(sb) - 1); - meta_group_info[i] = kmem_cache_alloc(cachep, GFP_KERNEL); + meta_group_info[i] = kmem_cache_zalloc(cachep, GFP_KERNEL); if (meta_group_info[i] == NULL) { ext4_msg(sb, KERN_ERR, "can't allocate buddy mem"); goto exit_group_info; } - memset(meta_group_info[i], 0, kmem_cache_size(cachep)); set_bit(EXT4_GROUP_INFO_NEED_INIT_BIT, &(meta_group_info[i]->bb_state)); @@ -4010,7 +4009,6 @@ ext4_mb_initialize_context(struct ext4_allocation_context *ac, ext4_get_group_no_and_offset(sb, goal, &group, &block); /* set up allocation goals */ - memset(ac, 0, sizeof(struct ext4_allocation_context)); ac->ac_b_ex.fe_logical = ar->logical & ~(sbi->s_cluster_ratio - 1); ac->ac_status = AC_STATUS_CONTINUE; ac->ac_sb = sb; @@ -4293,7 +4291,7 @@ ext4_fsblk_t ext4_mb_new_blocks(handle_t *handle, } } - ac = kmem_cache_alloc(ext4_ac_cachep, GFP_NOFS); + ac = kmem_cache_zalloc(ext4_ac_cachep, GFP_NOFS); if (!ac) { ar->len = 0; *errp = -ENOMEM; |
