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NFSv4.1/pNFS: Don't queue up a new commit if the layout segment is invalid

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If the layout segment is invalid, then we should not be adding more
write requests to the commit list. Instead, those writes should be
replayed after requesting a new layout.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Trond Myklebust
2015-12-31 09:28:06 -05:00
parent af7cf05793
commit b20135d0b2
7 changed files with 39 additions and 0 deletions
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5
fs/nfs/pnfs_nfs.c
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@@ -868,6 +868,11 @@ pnfs_layout_mark_request_commit(struct nfs_page *req,
buckets = cinfo->ds->buckets;
list = &buckets[ds_commit_idx].written;
if (list_empty(list)) {
if (!pnfs_is_valid_lseg(lseg)) {
spin_unlock(cinfo->lock);
cinfo->completion_ops->resched_write(cinfo, req);
return;
}
/* Non-empty buckets hold a reference on the lseg. That ref
* is normally transferred to the COMMIT call and released
* there. It could also be released if the last req is pulled