Commit addd752c authored by Chunguang Xu's avatar Chunguang Xu Committed by Theodore Ts'o
Browse files

ext4: make mb_check_counter per group 



Make bb_check_counter per group, so each group has the same chance
to be checked, which can expose errors more easily.

Signed-off-by: default avatarChunguang Xu <brookxu@tencent.com>
Link: https://lore.kernel.org/r/1601292995-32205-2-git-send-email-brookxu@tencent.com


Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
parent 9d1f9b27

fs/ext4/ext4.h

+3 −0
Original line number Diff line number Diff line
@@ -3154,6 +3154,9 @@ int ext4_update_disksize_before_punch(struct inode *inode, loff_t offset, 


struct ext4_group_info {

	unsigned long   bb_state;

#ifdef AGGRESSIVE_CHECK

	unsigned long	bb_check_counter;

#endif

	struct rb_root  bb_free_root;

	ext4_grpblk_t	bb_first_free;	/* first free block */

	ext4_grpblk_t	bb_free;	/* total free blocks */

fs/ext4/mballoc.c

+2 −5
Original line number Diff line number Diff line
@@ -619,11 +619,8 @@ static int __mb_check_buddy(struct ext4_buddy *e4b, char *file, 
	void *buddy;

	void *buddy2;



	{

		static int mb_check_counter;

		if (mb_check_counter++ % 100 != 0)

	if (e4b->bd_info->bb_check_counter++ % 10)

		return 0;

	}



	while (order > 1) {

		buddy = mb_find_buddy(e4b, order, &max);

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