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nfsd: hook up nfs4_preprocess_stateid_op to the nfsd_file cache 

Have nfs4_preprocess_stateid_op pass back a nfsd_file instead of a filp.
Since we now presume that the struct file will be persistent in most
cases, we can stop fiddling with the raparms in the read code. This
also means that we don't really care about the rd_tmp_file field
anymore.

Signed-off-by: Jeff Layton <jeff.layton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
alistair/sunxi64-5.4-dsi
Jeff Layton 2019-08-18 14:18:54 -04:00 committed by J. Bruce Fields
parent eb82dd3937
commit 5c4583b2b7
5 changed files with 68 additions and 74 deletions
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83
fs/nfsd/nfs4proc.c
View File

@ -761,7 +761,7 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_read *read = &u->read;
__be32 status;
read->rd_filp = NULL;
read->rd_nf = NULL;
if (read->rd_offset >= OFFSET_MAX)
return nfserr_inval;
@ -782,7 +782,7 @@ nfsd4_read(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
/* check stateid */
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
&read->rd_stateid, RD_STATE,
&read->rd_filp, &read->rd_tmp_file);
&read->rd_nf);
if (status) {
dprintk("NFSD: nfsd4_read: couldn't process stateid!\n");
goto out;
@ -798,8 +798,8 @@ out:
static void
nfsd4_read_release(union nfsd4_op_u *u)
{
if (u->read.rd_filp)
fput(u->read.rd_filp);
if (u->read.rd_nf)
nfsd_file_put(u->read.rd_nf);
trace_nfsd_read_done(u->read.rd_rqstp, u->read.rd_fhp,
u->read.rd_offset, u->read.rd_length);
}
@ -954,7 +954,7 @@ nfsd4_setattr(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (setattr->sa_iattr.ia_valid & ATTR_SIZE) {
status = nfs4_preprocess_stateid_op(rqstp, cstate,
&cstate->current_fh, &setattr->sa_stateid,
WR_STATE, NULL, NULL);
WR_STATE, NULL);
if (status) {
dprintk("NFSD: nfsd4_setattr: couldn't process stateid!\n");
return status;
@ -993,7 +993,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
{
struct nfsd4_write *write = &u->write;
stateid_t *stateid = &write->wr_stateid;
struct file *filp = NULL;
struct nfsd_file *nf = NULL;
__be32 status = nfs_ok;
unsigned long cnt;
int nvecs;
@ -1005,7 +1005,7 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
trace_nfsd_write_start(rqstp, &cstate->current_fh,
write->wr_offset, cnt);
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
stateid, WR_STATE, &filp, NULL);
stateid, WR_STATE, &nf);
if (status) {
dprintk("NFSD: nfsd4_write: couldn't process stateid!\n");
return status;
@ -1018,10 +1018,10 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
&write->wr_head, write->wr_buflen);
WARN_ON_ONCE(nvecs > ARRAY_SIZE(rqstp->rq_vec));
status = nfsd_vfs_write(rqstp, &cstate->current_fh, filp,
status = nfsd_vfs_write(rqstp, &cstate->current_fh, nf->nf_file,
write->wr_offset, rqstp->rq_vec, nvecs, &cnt,
write->wr_how_written);
fput(filp);
nfsd_file_put(nf);
write->wr_bytes_written = cnt;
trace_nfsd_write_done(rqstp, &cstate->current_fh,
@ -1031,8 +1031,8 @@ nfsd4_write(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
static __be32
nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
stateid_t *src_stateid, struct file **src,
stateid_t *dst_stateid, struct file **dst)
stateid_t *src_stateid, struct nfsd_file **src,
stateid_t *dst_stateid, struct nfsd_file **dst)
{
__be32 status;
@ -1040,22 +1040,22 @@ nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
return nfserr_nofilehandle;
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->save_fh,
src_stateid, RD_STATE, src, NULL);
src_stateid, RD_STATE, src);
if (status) {
dprintk("NFSD: %s: couldn't process src stateid!\n", __func__);
goto out;
}
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
dst_stateid, WR_STATE, dst, NULL);
dst_stateid, WR_STATE, dst);
if (status) {
dprintk("NFSD: %s: couldn't process dst stateid!\n", __func__);
goto out_put_src;
}
/* fix up for NFS-specific error code */
if (!S_ISREG(file_inode(*src)->i_mode) ||
!S_ISREG(file_inode(*dst)->i_mode)) {
if (!S_ISREG(file_inode((*src)->nf_file)->i_mode) ||
!S_ISREG(file_inode((*dst)->nf_file)->i_mode)) {
status = nfserr_wrong_type;
goto out_put_dst;
}
@ -1063,9 +1063,9 @@ nfsd4_verify_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
out:
return status;
out_put_dst:
fput(*dst);
nfsd_file_put(*dst);
out_put_src:
fput(*src);
nfsd_file_put(*src);
goto out;
}
@ -1074,7 +1074,7 @@ nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
union nfsd4_op_u *u)
{
struct nfsd4_clone *clone = &u->clone;
struct file *src, *dst;
struct nfsd_file *src, *dst;
__be32 status;
status = nfsd4_verify_copy(rqstp, cstate, &clone->cl_src_stateid, &src,
@ -1082,11 +1082,11 @@ nfsd4_clone(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
if (status)
goto out;
status = nfsd4_clone_file_range(src, clone->cl_src_pos,
dst, clone->cl_dst_pos, clone->cl_count);
status = nfsd4_clone_file_range(src->nf_file, clone->cl_src_pos,
dst->nf_file, clone->cl_dst_pos, clone->cl_count);
fput(dst);
fput(src);
nfsd_file_put(dst);
nfsd_file_put(src);
out:
return status;
}
@ -1176,8 +1176,9 @@ static ssize_t _nfsd_copy_file_range(struct nfsd4_copy *copy)
do {
if (kthread_should_stop())
break;
bytes_copied = nfsd_copy_file_range(copy->file_src, src_pos,
copy->file_dst, dst_pos, bytes_total);
bytes_copied = nfsd_copy_file_range(copy->nf_src->nf_file,
src_pos, copy->nf_dst->nf_file, dst_pos,
bytes_total);
if (bytes_copied <= 0)
break;
bytes_total -= bytes_copied;
@ -1204,8 +1205,8 @@ static __be32 nfsd4_do_copy(struct nfsd4_copy *copy, bool sync)
status = nfs_ok;
}
fput(copy->file_src);
fput(copy->file_dst);
nfsd_file_put(copy->nf_src);
nfsd_file_put(copy->nf_dst);
return status;
}
@ -1218,16 +1219,16 @@ static void dup_copy_fields(struct nfsd4_copy *src, struct nfsd4_copy *dst)
memcpy(&dst->cp_res, &src->cp_res, sizeof(src->cp_res));
memcpy(&dst->fh, &src->fh, sizeof(src->fh));
dst->cp_clp = src->cp_clp;
dst->file_dst = get_file(src->file_dst);
dst->file_src = get_file(src->file_src);
dst->nf_dst = nfsd_file_get(src->nf_dst);
dst->nf_src = nfsd_file_get(src->nf_src);
memcpy(&dst->cp_stateid, &src->cp_stateid, sizeof(src->cp_stateid));
}
static void cleanup_async_copy(struct nfsd4_copy *copy)
{
nfs4_free_cp_state(copy);
fput(copy->file_dst);
fput(copy->file_src);
nfsd_file_put(copy->nf_dst);
nfsd_file_put(copy->nf_src);
spin_lock(&copy->cp_clp->async_lock);
list_del(&copy->copies);
spin_unlock(&copy->cp_clp->async_lock);
@ -1264,8 +1265,8 @@ nfsd4_copy(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_copy *async_copy = NULL;
status = nfsd4_verify_copy(rqstp, cstate, &copy->cp_src_stateid,
&copy->file_src, &copy->cp_dst_stateid,
&copy->file_dst);
&copy->nf_src, &copy->cp_dst_stateid,
&copy->nf_dst);
if (status)
goto out;
@ -1347,21 +1348,21 @@ nfsd4_fallocate(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_fallocate *fallocate, int flags)
{
__be32 status;
struct file *file;
struct nfsd_file *nf;
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
&fallocate->falloc_stateid,
WR_STATE, &file, NULL);
WR_STATE, &nf);
if (status != nfs_ok) {
dprintk("NFSD: nfsd4_fallocate: couldn't process stateid!\n");
return status;
}
status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, file,
status = nfsd4_vfs_fallocate(rqstp, &cstate->current_fh, nf->nf_file,
fallocate->falloc_offset,
fallocate->falloc_length,
flags);
fput(file);
nfsd_file_put(nf);
return status;
}
static __be32
@ -1406,11 +1407,11 @@ nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
struct nfsd4_seek *seek = &u->seek;
int whence;
__be32 status;
struct file *file;
struct nfsd_file *nf;
status = nfs4_preprocess_stateid_op(rqstp, cstate, &cstate->current_fh,
&seek->seek_stateid,
RD_STATE, &file, NULL);
RD_STATE, &nf);
if (status) {
dprintk("NFSD: nfsd4_seek: couldn't process stateid!\n");
return status;
@ -1432,14 +1433,14 @@ nfsd4_seek(struct svc_rqst *rqstp, struct nfsd4_compound_state *cstate,
* Note: This call does change file->f_pos, but nothing in NFSD
* should ever file->f_pos.
*/
seek->seek_pos = vfs_llseek(file, seek->seek_offset, whence);
seek->seek_pos = vfs_llseek(nf->nf_file, seek->seek_offset, whence);
if (seek->seek_pos < 0)
status = nfserrno(seek->seek_pos);
else if (seek->seek_pos >= i_size_read(file_inode(file)))
else if (seek->seek_pos >= i_size_read(file_inode(nf->nf_file)))
seek->seek_eof = true;
out:
fput(file);
nfsd_file_put(nf);
return status;
}

24
fs/nfsd/nfs4state.c
View File

@ -5554,7 +5554,7 @@ nfs4_check_olstateid(struct nfs4_ol_stateid *ols, int flags)
static __be32
nfs4_check_file(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfs4_stid *s,
struct file **filpp, bool *tmp_file, int flags)
struct nfsd_file **nfp, int flags)
{
int acc = (flags & RD_STATE) ? NFSD_MAY_READ : NFSD_MAY_WRITE;
struct nfsd_file *nf;
@ -5564,19 +5564,17 @@ nfs4_check_file(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfs4_stid *s,
if (nf) {
status = nfsd_permission(rqstp, fhp->fh_export, fhp->fh_dentry,
acc | NFSD_MAY_OWNER_OVERRIDE);
if (status)
if (status) {
nfsd_file_put(nf);
goto out;
}
} else {
status = nfsd_file_acquire(rqstp, fhp, acc, &nf);
if (status)
return status;
if (tmp_file)
*tmp_file = true;
}
*filpp = get_file(nf->nf_file);
*nfp = nf;
out:
nfsd_file_put(nf);
return status;
}
@ -5586,7 +5584,7 @@ out:
__be32
nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate, struct svc_fh *fhp,
stateid_t *stateid, int flags, struct file **filpp, bool *tmp_file)
stateid_t *stateid, int flags, struct nfsd_file **nfp)
{
struct inode *ino = d_inode(fhp->fh_dentry);
struct net *net = SVC_NET(rqstp);
@ -5594,10 +5592,8 @@ nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
struct nfs4_stid *s = NULL;
__be32 status;
if (filpp)
*filpp = NULL;
if (tmp_file)
*tmp_file = false;
if (nfp)
*nfp = NULL;
if (grace_disallows_io(net, ino))
return nfserr_grace;
@ -5634,8 +5630,8 @@ nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
status = nfs4_check_fh(fhp, s);
done:
if (!status && filpp)
status = nfs4_check_file(rqstp, fhp, s, filpp, tmp_file, flags);
if (status == nfs_ok && nfp)
status = nfs4_check_file(rqstp, fhp, s, nfp, flags);
out:
if (s)
nfs4_put_stid(s);

14
fs/nfsd/nfs4xdr.c
View File

@ -49,6 +49,7 @@
#include "cache.h"
#include "netns.h"
#include "pnfs.h"
#include "filecache.h"
#ifdef CONFIG_NFSD_V4_SECURITY_LABEL
#include <linux/security.h>
@ -3574,11 +3575,14 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
{
unsigned long maxcount;
struct xdr_stream *xdr = &resp->xdr;
struct file *file = read->rd_filp;
struct file *file;
int starting_len = xdr->buf->len;
struct raparms *ra = NULL;
__be32 *p;
if (nfserr)
return nfserr;
file = read->rd_nf->nf_file;
p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */
if (!p) {
WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags));
@ -3596,18 +3600,12 @@ nfsd4_encode_read(struct nfsd4_compoundres *resp, __be32 nfserr,
(xdr->buf->buflen - xdr->buf->len));
maxcount = min_t(unsigned long, maxcount, read->rd_length);
if (read->rd_tmp_file)
ra = nfsd_init_raparms(file);
if (file->f_op->splice_read &&
test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags))
nfserr = nfsd4_encode_splice_read(resp, read, file, maxcount);
else
nfserr = nfsd4_encode_readv(resp, read, file, maxcount);
if (ra)
nfsd_put_raparams(file, ra);
if (nfserr)
xdr_truncate_encode(xdr, starting_len);

2
fs/nfsd/state.h
View File

@ -616,7 +616,7 @@ struct nfsd4_copy;
extern __be32 nfs4_preprocess_stateid_op(struct svc_rqst *rqstp,
struct nfsd4_compound_state *cstate, struct svc_fh *fhp,
stateid_t *stateid, int flags, struct file **filp, bool *tmp_file);
stateid_t *stateid, int flags, struct nfsd_file **filp);
__be32 nfsd4_lookup_stateid(struct nfsd4_compound_state *cstate,
stateid_t *stateid, unsigned char typemask,
struct nfs4_stid **s, struct nfsd_net *nn);

19
fs/nfsd/xdr4.h
View File

@ -273,15 +273,14 @@ struct nfsd4_open_downgrade {
struct nfsd4_read {
stateid_t rd_stateid; /* request */
u64 rd_offset; /* request */
u32 rd_length; /* request */
int rd_vlen;
struct file *rd_filp;
bool rd_tmp_file;
stateid_t rd_stateid; /* request */
u64 rd_offset; /* request */
u32 rd_length; /* request */
int rd_vlen;
struct nfsd_file *rd_nf;
struct svc_rqst *rd_rqstp; /* response */
struct svc_fh * rd_fhp; /* response */
struct svc_rqst *rd_rqstp; /* response */
struct svc_fh *rd_fhp; /* response */
};
struct nfsd4_readdir {
@ -538,8 +537,8 @@ struct nfsd4_copy {
struct nfs4_client *cp_clp;
struct file *file_src;
struct file *file_dst;
struct nfsd_file *nf_src;
struct nfsd_file *nf_dst;
stateid_t cp_stateid;