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gfs2: Stop messing with ip->i_rgd in the rlist code

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In the resource group list code, keep the last resource group added in
the last position in the array.  Check against that instead of messing
with ip->i_rgd.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Andreas Gruenbacher 2018-06-21 07:22:12 -05:00
parent ee9c7f9ae3
commit 03f8c41c73
1 changed files with 22 additions and 6 deletions
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28
fs/gfs2/rgrp.c
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@ -2559,19 +2559,35 @@ void gfs2_rlist_add(struct gfs2_inode *ip, struct gfs2_rgrp_list *rlist,
if (gfs2_assert_warn(sdp, !rlist->rl_ghs))
return;
if (ip->i_rgd && rgrp_contains_block(ip->i_rgd, block))
rgd = ip->i_rgd;
else
/*
* The resource group last accessed is kept in the last position.
*/
if (rlist->rl_rgrps) {
rgd = rlist->rl_rgd[rlist->rl_rgrps - 1];
if (rgrp_contains_block(rgd, block))
return;
rgd = gfs2_blk2rgrpd(sdp, block, 1);
} else {
rgd = ip->i_rgd;
if (!rgd || !rgrp_contains_block(rgd, block))
rgd = gfs2_blk2rgrpd(sdp, block, 1);
}
if (!rgd) {
fs_err(sdp, "rlist_add: no rgrp for block %llu\n", (unsigned long long)block);
fs_err(sdp, "rlist_add: no rgrp for block %llu\n",
(unsigned long long)block);
return;
}
ip->i_rgd = rgd;
for (x = 0; x < rlist->rl_rgrps; x++)
if (rlist->rl_rgd[x] == rgd)
for (x = 0; x < rlist->rl_rgrps; x++) {
if (rlist->rl_rgd[x] == rgd) {
swap(rlist->rl_rgd[x],
rlist->rl_rgd[rlist->rl_rgrps - 1]);
return;
}
}
if (rlist->rl_rgrps == rlist->rl_space) {
new_space = rlist->rl_space + 10;