Commit cf4eb321 authored by Jan Kara's avatar Jan Kara
Browse files

ext2: Simplify initialization in ext2_try_to_allocate() 



Somewhat simplify the logic initializing search start and end in
ext2_try_to_allocate(). No functional change.

Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 90f3741c

fs/ext2/balloc.c

+5 −17
Original line number Diff line number Diff line
@@ -671,29 +671,17 @@ ext2_try_to_allocate(struct super_block *sb, int group, 
       	ext2_grpblk_t start, end;

	unsigned long num = 0;



	start = 0;

	end = group_last_block - group_first_block + 1;

	/* we do allocation within the reservation window if we have a window */

	if (my_rsv) {

		if (my_rsv->_rsv_start >= group_first_block)

			start = my_rsv->_rsv_start - group_first_block;

		else

			/* reservation window cross group boundary */

			start = 0;

		if (my_rsv->_rsv_end < group_last_block)

			end = my_rsv->_rsv_end - group_first_block + 1;

		if (end > group_last_block - group_first_block + 1)

			/* reservation window crosses group boundary */

			end = group_last_block - group_first_block + 1;

		if ((start <= grp_goal) && (grp_goal < end))

			start = grp_goal;

		else

		if (grp_goal < start || grp_goal >= end)

			grp_goal = -1;

	} else {

		if (grp_goal > 0)

			start = grp_goal;

		else

			start = 0;

		end = group_last_block - group_first_block + 1;

	}



	BUG_ON(start > EXT2_BLOCKS_PER_GROUP(sb));



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