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Commit ceed1723 authored by Jan Kara's avatar Jan Kara Committed by Al Viro
Browse files

quota: Split dquot_quota_sync() to writeback and cache flushing part 



Split off part of dquot_quota_sync() which writes dquots into a quota file
to a separate function. In the next patch we will use the function from
filesystems and we do not want to abuse ->quota_sync quotactl callback more
than necessary.

Acked-by: default avatarSteven Whitehouse <swhiteho@redhat.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 6eedc701

fs/gfs2/quota.c

+2 −2
Original line number Diff line number Diff line
@@ -1108,7 +1108,7 @@ void gfs2_quota_change(struct gfs2_inode *ip, s64 change, 
	}

}



int gfs2_quota_sync(struct super_block *sb, int type, int wait)

int gfs2_quota_sync(struct super_block *sb, int type)

{

	struct gfs2_sbd *sdp = sb->s_fs_info;

	struct gfs2_quota_data **qda;
@@ -1154,7 +1154,7 @@ int gfs2_quota_sync(struct super_block *sb, int type, int wait) 


static int gfs2_quota_sync_timeo(struct super_block *sb, int type)

{

	return gfs2_quota_sync(sb, type, 0);

	return gfs2_quota_sync(sb, type);

}



int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id)

fs/gfs2/quota.h

+1 −1
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@ extern int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid); 
extern void gfs2_quota_change(struct gfs2_inode *ip, s64 change,

			      u32 uid, u32 gid);



extern int gfs2_quota_sync(struct super_block *sb, int type, int wait);

extern int gfs2_quota_sync(struct super_block *sb, int type);

extern int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);



extern int gfs2_quota_init(struct gfs2_sbd *sdp);

fs/gfs2/super.c

+1 −1
Original line number Diff line number Diff line
@@ -838,7 +838,7 @@ static int gfs2_make_fs_ro(struct gfs2_sbd *sdp) 
	int error;



	flush_workqueue(gfs2_delete_workqueue);

	gfs2_quota_sync(sdp->sd_vfs, 0, 1);

	gfs2_quota_sync(sdp->sd_vfs, 0);

	gfs2_statfs_sync(sdp->sd_vfs, 0);



	error = gfs2_glock_nq_init(sdp->sd_trans_gl, LM_ST_SHARED, GL_NOCACHE,

fs/gfs2/sys.c

+1 −1
Original line number Diff line number Diff line
@@ -168,7 +168,7 @@ static ssize_t quota_sync_store(struct gfs2_sbd *sdp, const char *buf, 
	if (simple_strtol(buf, NULL, 0) != 1)

		return -EINVAL;



	gfs2_quota_sync(sdp->sd_vfs, 0, 1);

	gfs2_quota_sync(sdp->sd_vfs, 0);

	return len;

}

fs/quota/dquot.c

+21 −3
Original line number Diff line number Diff line
@@ -595,12 +595,14 @@ int dquot_scan_active(struct super_block *sb, 
}

EXPORT_SYMBOL(dquot_scan_active);



int dquot_quota_sync(struct super_block *sb, int type, int wait)

/* Write all dquot structures to quota files */

int dquot_writeback_dquots(struct super_block *sb, int type)

{

	struct list_head *dirty;

	struct dquot *dquot;

	struct quota_info *dqopt = sb_dqopt(sb);

	int cnt;

	int err, ret = 0;



	mutex_lock(&dqopt->dqonoff_mutex);

	for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
@@ -624,7 +626,9 @@ int dquot_quota_sync(struct super_block *sb, int type, int wait) 
			atomic_inc(&dquot->dq_count);

			spin_unlock(&dq_list_lock);

			dqstats_inc(DQST_LOOKUPS);

			sb->dq_op->write_dquot(dquot);

			err = sb->dq_op->write_dquot(dquot);

			if (!ret && err)

				err = ret;

			dqput(dquot);

			spin_lock(&dq_list_lock);

		}
@@ -638,7 +642,21 @@ int dquot_quota_sync(struct super_block *sb, int type, int wait) 
	dqstats_inc(DQST_SYNCS);

	mutex_unlock(&dqopt->dqonoff_mutex);



	if (!wait || (dqopt->flags & DQUOT_QUOTA_SYS_FILE))

	return ret;

}

EXPORT_SYMBOL(dquot_writeback_dquots);



/* Write all dquot structures to disk and make them visible from userspace */

int dquot_quota_sync(struct super_block *sb, int type)

{

	struct quota_info *dqopt = sb_dqopt(sb);

	int cnt;

	int ret;



	ret = dquot_writeback_dquots(sb, type);

	if (ret)

		return ret;

	if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)

		return 0;



	/* This is not very clever (and fast) but currently I don't know about