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NFSD: Move the fh_getattr() helper 

Clean up: The fh_getattr() function is part of NFSD's file handle
API, so relocate it.

I've made it an un-inlined function so that trace points and new
functionality can easily be introduced. That increases the size of
nfsd.ko by about a page on my x86_64 system (out of 26MB; compiled
with -O2).

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2025-07-02 19:33:45 -04:00
parent c926f0298d
commit c1f203e46c
3 changed files with 24 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
fs/nfsd/nfsfh.c
View File

@ -662,6 +662,29 @@ fh_update(struct svc_fh *fhp)
return nfserr_serverfault;
}
/**
* fh_getattr - Retrieve attributes on a local file
* @fhp: File handle of target file
* @stat: Caller-supplied kstat buffer to be filled in
*
* Returns nfs_ok on success, otherwise an NFS status code is
* returned.
*/
__be32 fh_getattr(const struct svc_fh *fhp, struct kstat *stat)
{
struct path p = {
.mnt = fhp->fh_export->ex_path.mnt,
.dentry = fhp->fh_dentry,
};
u32 request_mask = STATX_BASIC_STATS;
if (fhp->fh_maxsize == NFS4_FHSIZE)
request_mask |= (STATX_BTIME | STATX_CHANGE_COOKIE);
return nfserrno(vfs_getattr(&p, stat, request_mask,
AT_STATX_SYNC_AS_STAT));
}
/**
* fh_fill_pre_attrs - Fill in pre-op attributes
* @fhp: file handle to be updated

1
fs/nfsd/nfsfh.h
View File

@ -222,6 +222,7 @@ extern char * SVCFH_fmt(struct svc_fh *fhp);
__be32 fh_verify(struct svc_rqst *, struct svc_fh *, umode_t, int);
__be32 fh_verify_local(struct net *, struct svc_cred *, struct auth_domain *,
struct svc_fh *, umode_t, int);
__be32 fh_getattr(const struct svc_fh *fhp, struct kstat *stat);
__be32 fh_compose(struct svc_fh *, struct svc_export *, struct dentry *, struct svc_fh *);
__be32 fh_update(struct svc_fh *);
void fh_put(struct svc_fh *);

13
fs/nfsd/vfs.h
View File

@ -160,17 +160,4 @@ __be32 nfsd_permission(struct svc_cred *cred, struct svc_export *exp,
void nfsd_filp_close(struct file *fp);
static inline __be32 fh_getattr(const struct svc_fh *fh, struct kstat *stat)
{
u32 request_mask = STATX_BASIC_STATS;
struct path p = {.mnt = fh->fh_export->ex_path.mnt,
.dentry = fh->fh_dentry};
if (fh->fh_maxsize == NFS4_FHSIZE)
request_mask |= (STATX_BTIME | STATX_CHANGE_COOKIE);
return nfserrno(vfs_getattr(&p, stat, request_mask,
AT_STATX_SYNC_AS_STAT));
}
#endif /* LINUX_NFSD_VFS_H */