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pNFS: Do not free layout segments that are marked for return

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We may want to process and transmit layout stat information for the
layout segments that are being returned, so we should defer freeing
them until after the layoutreturn has completed.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2016-10-12 19:50:54 -04:00
parent 7b410d9ce4
commit 68f744797e
3 changed files with 73 additions and 22 deletions
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15
fs/nfs/nfs4proc.c
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@@ -8572,21 +8572,12 @@ static void nfs4_layoutreturn_release(void *calldata)
{
struct nfs4_layoutreturn *lrp = calldata;
struct pnfs_layout_hdr *lo = lrp->args.layout;
LIST_HEAD(freeme);
dprintk("--> %s\n", __func__);
spin_lock(&lo->plh_inode->i_lock);
if (lrp->res.lrs_present) {
pnfs_mark_matching_lsegs_invalid(lo, &freeme,
&lrp->args.range,
be32_to_cpu(lrp->args.stateid.seqid));
pnfs_set_layout_stateid(lo, &lrp->res.stateid, true);
} else
pnfs_mark_layout_stateid_invalid(lo, &freeme);
pnfs_clear_layoutreturn_waitbit(lo);
spin_unlock(&lo->plh_inode->i_lock);
pnfs_layoutreturn_free_lsegs(lo, &lrp->args.range,
be32_to_cpu(lrp->args.stateid.seqid),
lrp->res.lrs_present ? &lrp->res.stateid : NULL);
nfs4_sequence_free_slot(&lrp->res.seq_res);
pnfs_free_lseg_list(&freeme);
pnfs_put_layout_hdr(lrp->args.layout);
nfs_iput_and_deactive(lrp->inode);
kfree(calldata);