diff options
Diffstat (limited to 'fs/nfsd')
| -rw-r--r-- | fs/nfsd/blocklayout.c | 4 | ||||
| -rw-r--r-- | fs/nfsd/export.c | 4 | ||||
| -rw-r--r-- | fs/nfsd/vfs.c | 73 |
3 files changed, 34 insertions, 47 deletions
diff --git a/fs/nfsd/blocklayout.c b/fs/nfsd/blocklayout.c index fb5213afc854..c862c2489df0 100644 --- a/fs/nfsd/blocklayout.c +++ b/fs/nfsd/blocklayout.c @@ -219,6 +219,9 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev, u8 *buf, *d, type, assoc; int error; + if (WARN_ON_ONCE(!blk_queue_scsi_passthrough(q))) + return -EINVAL; + buf = kzalloc(bufflen, GFP_KERNEL); if (!buf) return -ENOMEM; @@ -229,7 +232,6 @@ static int nfsd4_scsi_identify_device(struct block_device *bdev, goto out_free_buf; } req = scsi_req(rq); - scsi_req_init(rq); error = blk_rq_map_kern(q, rq, buf, bufflen, GFP_KERNEL); if (error) diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c index e71f11b1a180..3bc08c394a3f 100644 --- a/fs/nfsd/export.c +++ b/fs/nfsd/export.c @@ -486,7 +486,7 @@ secinfo_parse(char **mesg, char *buf, struct svc_export *exp) { return 0; } #endif static inline int -uuid_parse(char **mesg, char *buf, unsigned char **puuid) +nfsd_uuid_parse(char **mesg, char *buf, unsigned char **puuid) { int len; @@ -586,7 +586,7 @@ static int svc_export_parse(struct cache_detail *cd, char *mesg, int mlen) if (strcmp(buf, "fsloc") == 0) err = fsloc_parse(&mesg, buf, &exp.ex_fslocs); else if (strcmp(buf, "uuid") == 0) - err = uuid_parse(&mesg, buf, &exp.ex_uuid); + err = nfsd_uuid_parse(&mesg, buf, &exp.ex_uuid); else if (strcmp(buf, "secinfo") == 0) err = secinfo_parse(&mesg, buf, &exp); else diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c index 2be32955d7f2..38d0383dc7f9 100644 --- a/fs/nfsd/vfs.c +++ b/fs/nfsd/vfs.c @@ -911,24 +911,13 @@ __be32 nfsd_splice_read(struct svc_rqst *rqstp, __be32 nfsd_readv(struct file *file, loff_t offset, struct kvec *vec, int vlen, unsigned long *count) { - mm_segment_t oldfs; + struct iov_iter iter; int host_err; - oldfs = get_fs(); - set_fs(KERNEL_DS); - host_err = vfs_readv(file, (struct iovec __user *)vec, vlen, &offset, 0); - set_fs(oldfs); - return nfsd_finish_read(file, count, host_err); -} + iov_iter_kvec(&iter, READ | ITER_KVEC, vec, vlen, *count); + host_err = vfs_iter_read(file, &iter, &offset, 0); -static __be32 -nfsd_vfs_read(struct svc_rqst *rqstp, struct file *file, - loff_t offset, struct kvec *vec, int vlen, unsigned long *count) -{ - if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &rqstp->rq_flags)) - return nfsd_splice_read(rqstp, file, offset, count); - else - return nfsd_readv(file, offset, vec, vlen, count); + return nfsd_finish_read(file, count, host_err); } /* @@ -974,7 +963,7 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, unsigned long *cnt, int stable) { struct svc_export *exp; - mm_segment_t oldfs; + struct iov_iter iter; __be32 err = 0; int host_err; int use_wgather; @@ -1000,10 +989,8 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct file *file, if (stable && !use_wgather) flags |= RWF_SYNC; - /* Write the data. */ - oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = vfs_writev(file, (struct iovec __user *)vec, vlen, &pos, flags); - set_fs(oldfs); + iov_iter_kvec(&iter, WRITE | ITER_KVEC, vec, vlen, *cnt); + host_err = vfs_iter_write(file, &iter, &pos, flags); if (host_err < 0) goto out_nfserr; *cnt = host_err; @@ -1044,7 +1031,12 @@ __be32 nfsd_read(struct svc_rqst *rqstp, struct svc_fh *fhp, ra = nfsd_init_raparms(file); trace_read_opened(rqstp, fhp, offset, vlen); - err = nfsd_vfs_read(rqstp, file, offset, vec, vlen, count); + + if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &rqstp->rq_flags)) + err = nfsd_splice_read(rqstp, file, offset, count); + else + err = nfsd_readv(file, offset, vec, vlen, count); + trace_read_io_done(rqstp, fhp, offset, vlen); if (ra) @@ -1464,41 +1456,34 @@ do_nfsd_create(struct svc_rqst *rqstp, struct svc_fh *fhp, __be32 nfsd_readlink(struct svc_rqst *rqstp, struct svc_fh *fhp, char *buf, int *lenp) { - mm_segment_t oldfs; __be32 err; - int host_err; + const char *link; struct path path; + DEFINE_DELAYED_CALL(done); + int len; err = fh_verify(rqstp, fhp, S_IFLNK, NFSD_MAY_NOP); - if (err) - goto out; + if (unlikely(err)) + return err; path.mnt = fhp->fh_export->ex_path.mnt; path.dentry = fhp->fh_dentry; - err = nfserr_inval; - if (!d_is_symlink(path.dentry)) - goto out; + if (unlikely(!d_is_symlink(path.dentry))) + return nfserr_inval; touch_atime(&path); - /* N.B. Why does this call need a get_fs()?? - * Remove the set_fs and watch the fireworks:-) --okir - */ - oldfs = get_fs(); set_fs(KERNEL_DS); - host_err = vfs_readlink(path.dentry, (char __user *)buf, *lenp); - set_fs(oldfs); - - if (host_err < 0) - goto out_nfserr; - *lenp = host_err; - err = 0; -out: - return err; + link = vfs_get_link(path.dentry, &done); + if (IS_ERR(link)) + return nfserrno(PTR_ERR(link)); -out_nfserr: - err = nfserrno(host_err); - goto out; + len = strlen(link); + if (len < *lenp) + *lenp = len; + memcpy(buf, link, *lenp); + do_delayed_call(&done); + return 0; } /* |