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NFSD: Refactor find_file()

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[ Upstream commit 1542474800 ]

find_file() is now the only caller of find_file_locked(), so just
fold these two together.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: NeilBrown <neilb@suse.de>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Chuck Lever 2022-10-28 10:47:47 -04:00 committed by Greg Kroah-Hartman
parent 0d4150f5eb
commit 49e8d9f465
1 changed files with 16 additions and 22 deletions
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38
fs/nfsd/nfs4state.c
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@ -4683,31 +4683,24 @@ move_to_close_lru(struct nfs4_ol_stateid *s, struct net *net)
nfs4_put_stid(&last->st_stid);
}
/* search file_hashtbl[] for file */
static struct nfs4_file *
find_file_locked(const struct svc_fh *fh, unsigned int hashval)
static noinline_for_stack struct nfs4_file *
nfsd4_file_hash_lookup(const struct svc_fh *fhp)
{
struct nfs4_file *fp;
hlist_for_each_entry_rcu(fp, &file_hashtbl[hashval], fi_hash,
lockdep_is_held(&state_lock)) {
if (fh_match(&fp->fi_fhandle, &fh->fh_handle)) {
if (refcount_inc_not_zero(&fp->fi_ref))
return fp;
}
}
return NULL;
}
static struct nfs4_file * find_file(struct svc_fh *fh)
{
struct nfs4_file *fp;
unsigned int hashval = file_hashval(fh);
unsigned int hashval = file_hashval(fhp);
struct nfs4_file *fi;
rcu_read_lock();
fp = find_file_locked(fh, hashval);
hlist_for_each_entry_rcu(fi, &file_hashtbl[hashval], fi_hash,
lockdep_is_held(&state_lock)) {
if (fh_match(&fi->fi_fhandle, &fhp->fh_handle)) {
if (refcount_inc_not_zero(&fi->fi_ref)) {
rcu_read_unlock();
return fi;
}
}
}
rcu_read_unlock();
return fp;
return NULL;
}
/*
@ -4758,9 +4751,10 @@ nfs4_share_conflict(struct svc_fh *current_fh, unsigned int deny_type)
struct nfs4_file *fp;
__be32 ret = nfs_ok;
fp = find_file(current_fh);
fp = nfsd4_file_hash_lookup(current_fh);
if (!fp)
return ret;
/* Check for conflicting share reservations */
spin_lock(&fp->fi_lock);
if (fp->fi_share_deny & deny_type)