Commit 137834a6 authored Aug 23, 2012 by Steven Whitehouse

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 <swhiteho@redhat.com>

parent 2b9731e8

fs/gfs2/rgrp.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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,

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