Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ed8f9c75 authored by Aneesh Kumar K.V's avatar Aneesh Kumar K.V Committed by Theodore Ts'o
Browse files

ext4: start searching for the right extent from the goal group. 



With mballoc we search for the best extent using different
criteria. We should always use the goal group when we are
starting with a new criteria.

Signed-off-by: default avatarAneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: default avatarMingming Cao <cmm@us.ibm.com>
Signed-off-by: default avatar"Theodore Ts'o" <tytso@mit.edu>
parent 8a35694e

fs/ext4/mballoc.c

+6 −4
Original line number Diff line number Diff line
@@ -1736,10 +1736,6 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac) 
		ac->ac_g_ex.fe_start = sbi->s_mb_last_start;

		spin_unlock(&sbi->s_md_lock);

	}



	/* searching for the right group start from the goal value specified */

	group = ac->ac_g_ex.fe_group;



	/* Let's just scan groups to find more-less suitable blocks */

	cr = ac->ac_2order ? 0 : 1;

	/*
@@ -1749,6 +1745,12 @@ ext4_mb_regular_allocator(struct ext4_allocation_context *ac) 
repeat:

	for (; cr < 4 && ac->ac_status == AC_STATUS_CONTINUE; cr++) {

		ac->ac_criteria = cr;

		/*

		 * searching for the right group start

		 * from the goal value specified

		 */

		group = ac->ac_g_ex.fe_group;



		for (i = 0; i < EXT4_SB(sb)->s_groups_count; group++, i++) {

			struct ext4_group_info *grp;

			struct ext4_group_desc *desc;