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pnfs: record sequence in pnfs_layout_segment when it's created 

In later patches, we're going to teach the client to be more selective
about how it returns layouts. This means keeping a record of what the
stateid's seqid was at the time that the server handed out a layout
segment.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
This commit is contained in:
Jeff Layton 2016-05-17 12:28:40 -04:00 committed by Anna Schumaker
parent ee26bdd680
commit 6675528380
2 changed files with 2 additions and 0 deletions
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1
fs/nfs/pnfs.c
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@ -1697,6 +1697,7 @@ pnfs_layout_process(struct nfs4_layoutget *lgp)
init_lseg(lo, lseg);
lseg->pls_range = res->range;
lseg->pls_seq = be32_to_cpu(res->stateid.seqid);
spin_lock(&ino->i_lock);
if (pnfs_layoutgets_blocked(lo)) {

1
fs/nfs/pnfs.h
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@ -64,6 +64,7 @@ struct pnfs_layout_segment {
struct list_head pls_lc_list;
struct pnfs_layout_range pls_range;
atomic_t pls_refcount;
u32 pls_seq;
unsigned long pls_flags;
struct pnfs_layout_hdr *pls_layout;
struct work_struct pls_work;