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Commit 41e327b5 authored by zhangyi (F)'s avatar zhangyi (F) Committed by Jan Kara
Browse files

quota: correct space limit check 



Currently we compare total space (curspace + rsvspace)
with space limit in quota-tools when setting grace time
and also in check_bdq(), but we missing rsvspace in
somewhere else, correct them. This patch also fix incorrect
zero dqb_btime and grace time updating failure when we use
rsvspace(e.g. ext4 dalloc feature).

Signed-off-by: default avatarzhangyi (F) <yi.zhang@huawei.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent aae4e7a8

fs/quota/dquot.c

+15 −6
Original line number Diff line number Diff line
@@ -1124,6 +1124,10 @@ void dquot_free_reserved_space(struct dquot *dquot, qsize_t number) 
		WARN_ON_ONCE(1);

		dquot->dq_dqb.dqb_rsvspace = 0;

	}

	if (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace <=

	    dquot->dq_dqb.dqb_bsoftlimit)

		dquot->dq_dqb.dqb_btime = (time64_t) 0;

	clear_bit(DQ_BLKS_B, &dquot->dq_flags);

}



static void dquot_decr_inodes(struct dquot *dquot, qsize_t number)
@@ -1145,7 +1149,8 @@ static void dquot_decr_space(struct dquot *dquot, qsize_t number) 
		dquot->dq_dqb.dqb_curspace -= number;

	else

		dquot->dq_dqb.dqb_curspace = 0;

	if (dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit)

	if (dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace <=

	    dquot->dq_dqb.dqb_bsoftlimit)

		dquot->dq_dqb.dqb_btime = (time64_t) 0;

	clear_bit(DQ_BLKS_B, &dquot->dq_flags);

}
@@ -1381,14 +1386,18 @@ static int info_idq_free(struct dquot *dquot, qsize_t inodes) 


static int info_bdq_free(struct dquot *dquot, qsize_t space)

{

	qsize_t tspace;



	tspace = dquot->dq_dqb.dqb_curspace + dquot->dq_dqb.dqb_rsvspace;



	if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||

	    dquot->dq_dqb.dqb_curspace <= dquot->dq_dqb.dqb_bsoftlimit)

	    tspace <= dquot->dq_dqb.dqb_bsoftlimit)

		return QUOTA_NL_NOWARN;



	if (dquot->dq_dqb.dqb_curspace - space <= dquot->dq_dqb.dqb_bsoftlimit)

	if (tspace - space <= dquot->dq_dqb.dqb_bsoftlimit)

		return QUOTA_NL_BSOFTBELOW;

	if (dquot->dq_dqb.dqb_curspace >= dquot->dq_dqb.dqb_bhardlimit &&

	    dquot->dq_dqb.dqb_curspace - space < dquot->dq_dqb.dqb_bhardlimit)

	if (tspace >= dquot->dq_dqb.dqb_bhardlimit &&

	    tspace - space < dquot->dq_dqb.dqb_bhardlimit)

		return QUOTA_NL_BHARDBELOW;

	return QUOTA_NL_NOWARN;

}
@@ -2681,7 +2690,7 @@ static int do_set_dqblk(struct dquot *dquot, struct qc_dqblk *di) 


	if (check_blim) {

		if (!dm->dqb_bsoftlimit ||

		    dm->dqb_curspace < dm->dqb_bsoftlimit) {

		    dm->dqb_curspace + dm->dqb_rsvspace < dm->dqb_bsoftlimit) {

			dm->dqb_btime = 0;

			clear_bit(DQ_BLKS_B, &dquot->dq_flags);

		} else if (!(di->d_fieldmask & QC_SPC_TIMER))