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pNFS: Handle NFS4ERR_OLD_STATEID on layoutreturn by bumping the state seqid 

If a LAYOUTRETURN receives a reply of NFS4ERR_OLD_STATEID then assume we've
missed an update, and just bump the stateid.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
alistair/sunxi64-5.4-dsi
Trond Myklebust 2019-09-20 07:23:45 -04:00 committed by Anna Schumaker
parent 9228395709
commit 30cb3ee299
3 changed files with 17 additions and 7 deletions
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2
fs/nfs/nfs4proc.c
View File

@ -9063,7 +9063,7 @@ static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
server = NFS_SERVER(lrp->args.inode);
switch (task->tk_status) {
case -NFS4ERR_OLD_STATEID:
if (nfs4_layoutreturn_refresh_stateid(&lrp->args.stateid,
if (nfs4_layout_refresh_old_stateid(&lrp->args.stateid,
&lrp->args.range,
lrp->args.inode))
goto out_restart;

18
fs/nfs/pnfs.c
View File

@ -359,9 +359,10 @@ pnfs_clear_lseg_state(struct pnfs_layout_segment *lseg,
}
/*
* Update the seqid of a layout stateid
* Update the seqid of a layout stateid after receiving
* NFS4ERR_OLD_STATEID
*/
bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst,
bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst,
struct pnfs_layout_range *dst_range,
struct inode *inode)
{
@ -377,7 +378,15 @@ bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst,
spin_lock(&inode->i_lock);
lo = NFS_I(inode)->layout;
if (lo && nfs4_stateid_match_other(dst, &lo->plh_stateid)) {
if (lo && pnfs_layout_is_valid(lo) &&
nfs4_stateid_match_other(dst, &lo->plh_stateid)) {
/* Is our call using the most recent seqid? If so, bump it */
if (!nfs4_stateid_is_newer(&lo->plh_stateid, dst)) {
nfs4_stateid_seqid_inc(dst);
ret = true;
goto out;
}
/* Try to update the seqid to the most recent */
err = pnfs_mark_matching_lsegs_return(lo, &head, &range, 0);
if (err != -EBUSY) {
dst->seqid = lo->plh_stateid.seqid;
@ -385,6 +394,7 @@ bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst,
ret = true;
}
}
out:
spin_unlock(&inode->i_lock);
pnfs_free_lseg_list(&head);
return ret;
@ -1475,7 +1485,7 @@ int pnfs_roc_done(struct rpc_task *task, struct inode *inode,
*ret = -NFS4ERR_NOMATCHING_LAYOUT;
return 0;
case -NFS4ERR_OLD_STATEID:
if (!nfs4_layoutreturn_refresh_stateid(&arg->stateid,
if (!nfs4_layout_refresh_old_stateid(&arg->stateid,
&arg->range, inode))
break;
*ret = -NFS4ERR_NOMATCHING_LAYOUT;

4
fs/nfs/pnfs.h
View File

@ -261,7 +261,7 @@ int pnfs_destroy_layouts_byfsid(struct nfs_client *clp,
bool is_recall);
int pnfs_destroy_layouts_byclid(struct nfs_client *clp,
bool is_recall);
bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst,
bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst,
struct pnfs_layout_range *dst_range,
struct inode *inode);
void pnfs_put_layout_hdr(struct pnfs_layout_hdr *lo);
@ -798,7 +798,7 @@ static inline void nfs4_pnfs_v3_ds_connect_unload(void)
{
}
static inline bool nfs4_layoutreturn_refresh_stateid(nfs4_stateid *dst,
static inline bool nfs4_layout_refresh_old_stateid(nfs4_stateid *dst,
struct pnfs_layout_range *dst_range,
struct inode *inode)
{