GFS2: Reserve journal space for quota change in do_grow

Hi,

If a GFS2 file system is mounted with quotas and a file is grown in such a way that its free blocks for the allocation are represented in a secondary bitmap, GFS2 ran out of blocks in the transaction. That resulted in "fatal: assertion "tr->tr_num_buf <= tr->tr_blocks". This patch reserves extra blocks for the quota change so the transaction has enough space.

Regards,

Bob Peterson
Red Hat File Systems

Signed-off-by Bob Peterson <[email protected]>

---
 fs/gfs2/bmap.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

fs/gfs2/bmap.c +3 -1

index 93b5809..5e2f56f 100644
@@ -1232,7 +1232,9 @@ static int do_grow(struct inode *inode, u64 size)
 		unstuff = 1;
 	}
 
-	error = gfs2_trans_begin(sdp, RES_DINODE + RES_STATFS + RES_RG_BIT, 0);
+	error = gfs2_trans_begin(sdp, RES_DINODE + RES_STATFS + RES_RG_BIT +
+				 (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF ?
+				  0 : RES_QUOTA), 0);
 	if (error)
 		goto do_grow_release;