From 137834a696fd51ef8c710a0ad854b585027c7df0 Mon Sep 17 00:00:00 2001 From: Steven Whitehouse Date: Thu, 23 Aug 2012 13:43:40 +0100 Subject: [PATCH] GFS2: Fall back to ignoring reservations, if there are no other blocks left When we get to the stage of allocating blocks, we know that the resource group in question must contain enough free blocks, otherwise gfs2_inplace_reserve() would have failed. So if we are left with only free blocks which are reserved, then we must use those. This can happen if another node has sneeked in and use some blocks reserved on this node, for example. Generally this will happen very rarely and only when the resouce group is nearly full. Signed-off-by: Steven Whitehouse --- fs/gfs2/rgrp.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index 55a2651..30c864e 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -2012,6 +2012,11 @@ int gfs2_alloc_blocks(struct gfs2_inode *ip, u64 *bn, unsigned int *nblocks, gfs2_rbm_from_block(&rbm, goal); error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, ip, false); + if (error == -ENOSPC) { + gfs2_rbm_from_block(&rbm, goal); + error = gfs2_rbm_find(&rbm, GFS2_BLKST_FREE, NULL, false); + } + /* Since all blocks are reserved in advance, this shouldn't happen */ if (error) { fs_warn(sdp, "error=%d, nblocks=%u, full=%d\n", error, *nblocks, -- 2.7.4