[PATCH v2 07/17] nfsd: don't keep a pointer to the lease in nfs4_file

Jeff Layton
2014-09-04T12:39:08Z

Now that we don't need to pass in an actual lease pointer to
vfs_setlease on unlock, we can stop tracking a pointer to the lease in
the nfs4_file.

Switch all of the places that check the fi_lease to check fi_deleg_file
instead. We always set that at the same time so it will have the same
semantics.

Cc: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
---
fs/nfsd/nfs4state.c | 10 ++++------
fs/nfsd/state.h | 1 -
2 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index 0cd252916e1a..d0a6e8e022a2 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -680,11 +680,10 @@ static void nfs4_put_deleg_lease(struct nfs4_file *fp)
{
lockdep_assert_held(&state_lock);

- if (!fp->fi_lease)
+ if (!fp->fi_deleg_file)
return;
if (atomic_dec_and_test(&fp->fi_delegees)) {
vfs_setlease(fp->fi_deleg_file, F_UNLCK, NULL);
- fp->fi_lease = NULL;
fput(fp->fi_deleg_file);
fp->fi_deleg_file = NULL;
}
@@ -3061,8 +3060,8 @@ static void nfsd4_init_file(struct nfs4_file *fp, struct knfsd_fh *fh)
INIT_LIST_HEAD(&fp->fi_stateids);
INIT_LIST_HEAD(&fp->fi_delegations);
fh_copy_shallow(&fp->fi_fhandle, fh);
+ fp->fi_deleg_file = NULL;
fp->fi_had_conflict = false;
- fp->fi_lease = NULL;
fp->fi_share_deny = 0;
memset(fp->fi_fds, 0, sizeof(fp->fi_fds));
memset(fp->fi_access, 0, sizeof(fp->fi_access));
@@ -3803,13 +3802,12 @@ static int nfs4_setlease(struct nfs4_delegation *dp)
if (fp->fi_had_conflict)
goto out_unlock;
/* Race breaker */
- if (fp->fi_lease) {
+ if (fp->fi_deleg_file) {
status = 0;
atomic_inc(&fp->fi_delegees);
hash_delegation_locked(dp, fp);
goto out_unlock;
}
- fp->fi_lease = fl;
fp->fi_deleg_file = filp;
atomic_set(&fp->fi_delegees, 1);
hash_delegation_locked(dp, fp);
@@ -3842,7 +3840,7 @@ nfs4_set_delegation(struct nfs4_client *clp, struct svc_fh *fh,
spin_lock(&state_lock);
spin_lock(&fp->fi_lock);
dp->dl_stid.sc_file = fp;
- if (!fp->fi_lease) {
+ if (!fp->fi_deleg_file) {
spin_unlock(&fp->fi_lock);
spin_unlock(&state_lock);
status = nfs4_setlease(dp);
diff --git a/fs/nfsd/state.h b/fs/nfsd/state.h
index 4a89e00d7461..64f291a25a8c 100644
--- a/fs/nfsd/state.h
+++ b/fs/nfsd/state.h
@@ -477,7 +477,6 @@ struct nfs4_file {
atomic_t fi_access[2];
u32 fi_share_deny;
struct file *fi_deleg_file;
- struct file_lock *fi_lease;
atomic_t fi_delegees;
struct knfsd_fh fi_fhandle;
bool fi_had_conflict;
--
1.9.3