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authorRitesh Harjani <riteshh@linux.ibm.com>2020-05-10 11:54:48 +0530
committerTheodore Ts'o <tytso@mit.edu>2020-06-03 23:16:52 -0400
commita345021553f7e6343b05b1ad1c25ed931140b47c (patch)
tree451a12c4a3124ab259b3a1079c0ed64f8019a5f9 /fs/ext4
parent4fca8f07790a62c2b3da028ae423cf4d71c1bacd (diff)
downloadlinux-a345021553f7e6343b05b1ad1c25ed931140b47c.tar.bz2
ext4: mballoc: refactor code inside DOUBLE_CHECK into separate function
This patch implemets mb_group_bb_bitmap_alloc() and mb_group_bb_bitmap_free() function to remove #ifdef DOUBLE_CHECK macro and it's related code from inside ext4_mb_add_groupinfo()/ext4_mb_release(). There should be no functionality change in this patch. Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com> Link: https://lore.kernel.org/r/8c2095d74b779f0254a19b24982490dc6f07c4f9.1589086800.git.riteshh@linux.ibm.com Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4')
-rw-r--r--fs/ext4/mballoc.c50
1 files changed, 33 insertions, 17 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 262a53f1d283..3555e72f149c 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -511,6 +511,26 @@ static void mb_cmp_bitmaps(struct ext4_buddy *e4b, void *bitmap)
}
}
+static void mb_group_bb_bitmap_alloc(struct super_block *sb,
+ struct ext4_group_info *grp, ext4_group_t group)
+{
+ struct buffer_head *bh;
+
+ grp->bb_bitmap = kmalloc(sb->s_blocksize, GFP_NOFS);
+ BUG_ON(grp->bb_bitmap == NULL);
+
+ bh = ext4_read_block_bitmap(sb, group);
+ BUG_ON(IS_ERR_OR_NULL(bh));
+
+ memcpy(grp->bb_bitmap, bh->b_data, sb->s_blocksize);
+ put_bh(bh);
+}
+
+static void mb_group_bb_bitmap_free(struct ext4_group_info *grp)
+{
+ kfree(grp->bb_bitmap);
+}
+
#else
static inline void mb_free_blocks_double(struct inode *inode,
struct ext4_buddy *e4b, int first, int count)
@@ -526,6 +546,17 @@ static inline void mb_cmp_bitmaps(struct ext4_buddy *e4b, void *bitmap)
{
return;
}
+
+static inline void mb_group_bb_bitmap_alloc(struct super_block *sb,
+ struct ext4_group_info *grp, ext4_group_t group)
+{
+ return;
+}
+
+static inline void mb_group_bb_bitmap_free(struct ext4_group_info *grp)
+{
+ return;
+}
#endif
#ifdef AGGRESSIVE_CHECK
@@ -2456,20 +2487,7 @@ int ext4_mb_add_groupinfo(struct super_block *sb, ext4_group_t group,
meta_group_info[i]->bb_free_root = RB_ROOT;
meta_group_info[i]->bb_largest_free_order = -1; /* uninit */
-#ifdef DOUBLE_CHECK
- {
- struct buffer_head *bh;
- meta_group_info[i]->bb_bitmap =
- kmalloc(sb->s_blocksize, GFP_NOFS);
- BUG_ON(meta_group_info[i]->bb_bitmap == NULL);
- bh = ext4_read_block_bitmap(sb, group);
- BUG_ON(IS_ERR_OR_NULL(bh));
- memcpy(meta_group_info[i]->bb_bitmap, bh->b_data,
- sb->s_blocksize);
- put_bh(bh);
- }
-#endif
-
+ mb_group_bb_bitmap_alloc(sb, meta_group_info[i], group);
return 0;
exit_group_info:
@@ -2736,9 +2754,7 @@ int ext4_mb_release(struct super_block *sb)
for (i = 0; i < ngroups; i++) {
cond_resched();
grinfo = ext4_get_group_info(sb, i);
-#ifdef DOUBLE_CHECK
- kfree(grinfo->bb_bitmap);
-#endif
+ mb_group_bb_bitmap_free(grinfo);
ext4_lock_group(sb, i);
ext4_mb_cleanup_pa(grinfo);
ext4_unlock_group(sb, i);