From: Fred Isaman <fred.isaman@xxxxxxxxx>
Signed-off-by: Fred Isaman <fred.isaman@xxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
fs/nfs/nfs4proc.c | 4 +++-
fs/nfs/pnfs.c | 19 ++++++++++++++++++-
include/linux/nfs_fs_sb.h | 1 +
3 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index a73c83f17a86..659ba6f0ca9b 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -9507,7 +9507,8 @@ static const struct nfs4_minor_version_ops nfs_v4_1_minor_ops = {
| NFS_CAP_ATOMIC_OPEN
| NFS_CAP_POSIX_LOCK
| NFS_CAP_STATEID_NFSV41
- | NFS_CAP_ATOMIC_OPEN_V1,
+ | NFS_CAP_ATOMIC_OPEN_V1
+ | NFS_CAP_LGOPEN,
.init_client = nfs41_init_client,
.shutdown_client = nfs41_shutdown_client,
.match_stateid = nfs41_match_stateid,
@@ -9532,6 +9533,7 @@ static const struct nfs4_minor_version_ops nfs_v4_2_minor_ops = {
| NFS_CAP_POSIX_LOCK
| NFS_CAP_STATEID_NFSV41
| NFS_CAP_ATOMIC_OPEN_V1
+ | NFS_CAP_LGOPEN
| NFS_CAP_ALLOCATE
| NFS_CAP_COPY
| NFS_CAP_DEALLOCATE
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 258b68110277..b2158e5bf7f7 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -2038,6 +2038,8 @@ void pnfs_lgopen_prepare(struct nfs4_opendata *data,
server->pnfs_curr_ld->flags & PNFS_LAYOUTGET_ON_OPEN))
return;
/* Could check on max_ops, but currently hardcoded high enough */
+ if (!nfs_server_capable(data->dir->d_inode, NFS_CAP_LGOPEN))
+ return;
if (data->state)
_lgopen_prepare_attached(data, ctx);
else
@@ -2051,8 +2053,23 @@ void pnfs_parse_lgopen(struct inode *ino, struct nfs4_layoutget *lgp,
struct pnfs_layout_segment *lseg;
u32 iomode;
- if (!lgp || lgp->res.layoutp->len == 0)
+ if (!lgp)
return;
+ dprintk("%s: entered with status %i\n", __func__, lgp->res.status);
+ if (lgp->res.status) {
+ switch (lgp->res.status) {
+ case -NFS4ERR_DELAY:
+ case -NFS4ERR_GRACE:
+ case -NFS4ERR_LAYOUTTRYLATER:
+ break;
+ default:
+ /* FIXME - Any error not listed above permanently
+ * halts lgopen attempts.
+ */
+ NFS_SERVER(ino)->caps &= ~NFS_CAP_LGOPEN;
+ }
+ return;
+ }
if (!lgp->args.inode) {
lo = _pnfs_grab_empty_layout(ino, ctx);
if (!lo)
diff --git a/include/linux/nfs_fs_sb.h b/include/linux/nfs_fs_sb.h
index 4e735be53e70..2c18d618604e 100644
--- a/include/linux/nfs_fs_sb.h
+++ b/include/linux/nfs_fs_sb.h
@@ -235,6 +235,7 @@ struct nfs_server {
#define NFS_CAP_ACLS (1U << 3)
#define NFS_CAP_ATOMIC_OPEN (1U << 4)
/* #define NFS_CAP_CHANGE_ATTR (1U << 5) */
+#define NFS_CAP_LGOPEN (1U << 5)
#define NFS_CAP_FILEID (1U << 6)
#define NFS_CAP_MODE (1U << 7)
#define NFS_CAP_NLINK (1U << 8)
--
2.17.0
--
To unsubscribe from this list: send the line "unsubscribe linux-nfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
