From 174d1232ebc84fcde8f5889d1171c9c7e74a10a7 Mon Sep 17 00:00:00 2001 From: Andreas Gruenbacher Date: Tue, 20 Feb 2018 08:03:24 -0700 Subject: gfs2: Fix fallocate chunk size The chunk size of allocations in __gfs2_fallocate is calculated incorrectly. The size can collapse, causing __gfs2_fallocate to allocate one block at a time, which is very inefficient. This needs fixing in two places: In gfs2_quota_lock_check, always set ap->allowed to UINT_MAX to indicate that there is no quota limit. This fixes callers that rely on ap->allowed to be set even when quotas are off. In __gfs2_fallocate, reset max_blks to UINT_MAX in each iteration of the loop to make sure that allocation limits from one resource group won't spill over into another resource group. Signed-off-by: Andreas Gruenbacher Signed-off-by: Bob Peterson --- fs/gfs2/quota.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/gfs2/quota.h') diff --git a/fs/gfs2/quota.h b/fs/gfs2/quota.h index 5e47c935a515..836f29480be6 100644 --- a/fs/gfs2/quota.h +++ b/fs/gfs2/quota.h @@ -45,6 +45,8 @@ static inline int gfs2_quota_lock_check(struct gfs2_inode *ip, { struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode); int ret; + + ap->allowed = UINT_MAX; /* Assume we are permitted a whole lot */ if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF) return 0; ret = gfs2_quota_lock(ip, NO_UID_QUOTA_CHANGE, NO_GID_QUOTA_CHANGE); -- cgit v1.2.3-55-g7522