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NFSv4.2: Fix NFS4ERR_STALE error when doing inter server copy

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NFS_FS=y as dependency of CONFIG_NFSD_V4_2_INTER_SSC still have
build errors and some configs with NFSD=m to get NFS4ERR_STALE
error when doing inter server copy.

Added ops table in nfs_common for knfsd to access NFS client modules.

Fixes: 3ac3711adb ("NFSD: Fix NFS server build errors")
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Dai Ngo
2020-10-18 23:42:49 -04:00
committed by J. Bruce Fields
parent d48c812474
commit 0cfcd405e7
8 changed files with 219 additions and 8 deletions
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38
fs/nfs/nfs4file.c
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@@ -9,6 +9,7 @@
#include <linux/falloc.h>
#include <linux/mount.h>
#include <linux/nfs_fs.h>
#include <linux/nfs_ssc.h>
#include "delegation.h"
#include "internal.h"
#include "iostat.h"
@@ -314,9 +315,8 @@ out:
static int read_name_gen = 1;
#define SSC_READ_NAME_BODY "ssc_read_%d"
struct file *
nfs42_ssc_open(struct vfsmount *ss_mnt, struct nfs_fh *src_fh,
nfs4_stateid *stateid)
static struct file *__nfs42_ssc_open(struct vfsmount *ss_mnt,
struct nfs_fh *src_fh, nfs4_stateid *stateid)
{
struct nfs_fattr fattr;
struct file *filep, *res;
@@ -398,14 +398,40 @@ out_filep:
fput(filep);
goto out_free_name;
}
EXPORT_SYMBOL_GPL(nfs42_ssc_open);
void nfs42_ssc_close(struct file *filep)
static void __nfs42_ssc_close(struct file *filep)
{
struct nfs_open_context *ctx = nfs_file_open_context(filep);
ctx->state->flags = 0;
}
EXPORT_SYMBOL_GPL(nfs42_ssc_close);
static const struct nfs4_ssc_client_ops nfs4_ssc_clnt_ops_tbl = {
.sco_open = __nfs42_ssc_open,
.sco_close = __nfs42_ssc_close,
};
/**
* nfs42_ssc_register_ops - Wrapper to register NFS_V4 ops in nfs_common
*
* Return values:
* None
*/
void nfs42_ssc_register_ops(void)
{
nfs42_ssc_register(&nfs4_ssc_clnt_ops_tbl);
}
/**
* nfs42_ssc_unregister_ops - wrapper to un-register NFS_V4 ops in nfs_common
*
* Return values:
* None.
*/
void nfs42_ssc_unregister_ops(void)
{
nfs42_ssc_unregister(&nfs4_ssc_clnt_ops_tbl);
}
#endif /* CONFIG_NFS_V4_2 */
const struct file_operations nfs4_file_operations = {