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Date: Sat, 7 Mar 2015 11:09:57 -0500
From: Jeff Layton <jeff.layton@...marydata.com>
To: linux-fsdevel@...r.kernel.org
Cc: bfields@...ldses.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] locks: change lm_get_owner and lm_put_owner prototypes
The current prototypes for these operations are somewhat awkward as they
deal with fl_owners but take struct file_lock arguments. In the future,
we'll want to be able to take references without necessarily dealing
with a struct file_lock.
Change them to take fl_owner_t arguments instead and have the callers
deal with assigning the values to the file_lock structs.
Signed-off-by: Jeff Layton <jlayton@...marydata.com>
---
fs/locks.c | 8 +++++---
fs/nfsd/nfs4state.c | 18 ++++++++++--------
include/linux/fs.h | 4 ++--
3 files changed, 17 insertions(+), 13 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index 7be49ad1c902..49d240874d4e 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -276,8 +276,10 @@ void locks_release_private(struct file_lock *fl)
}
if (fl->fl_lmops) {
- if (fl->fl_lmops->lm_put_owner)
- fl->fl_lmops->lm_put_owner(fl);
+ if (fl->fl_lmops->lm_put_owner) {
+ fl->fl_lmops->lm_put_owner(fl->fl_owner);
+ fl->fl_owner = NULL;
+ }
fl->fl_lmops = NULL;
}
}
@@ -333,7 +335,7 @@ void locks_copy_conflock(struct file_lock *new, struct file_lock *fl)
if (fl->fl_lmops) {
if (fl->fl_lmops->lm_get_owner)
- fl->fl_lmops->lm_get_owner(new, fl);
+ fl->fl_lmops->lm_get_owner(fl->fl_owner);
}
}
EXPORT_SYMBOL(locks_copy_conflock);
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index d2f2c37dc2db..132a0270dff3 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -4932,20 +4932,22 @@ nfs4_transform_lock_offset(struct file_lock *lock)
lock->fl_end = OFFSET_MAX;
}
-static void nfsd4_fl_get_owner(struct file_lock *dst, struct file_lock *src)
+static fl_owner_t
+nfsd4_fl_get_owner(fl_owner_t owner)
{
- struct nfs4_lockowner *lo = (struct nfs4_lockowner *)src->fl_owner;
- dst->fl_owner = (fl_owner_t)lockowner(nfs4_get_stateowner(&lo->lo_owner));
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *)owner;
+
+ nfs4_get_stateowner(&lo->lo_owner);
+ return owner;
}
-static void nfsd4_fl_put_owner(struct file_lock *fl)
+static void
+nfsd4_fl_put_owner(fl_owner_t owner)
{
- struct nfs4_lockowner *lo = (struct nfs4_lockowner *)fl->fl_owner;
+ struct nfs4_lockowner *lo = (struct nfs4_lockowner *)owner;
- if (lo) {
+ if (lo)
nfs4_put_stateowner(&lo->lo_owner);
- fl->fl_owner = NULL;
- }
}
static const struct lock_manager_operations nfsd_posix_mng_ops = {
diff --git a/include/linux/fs.h b/include/linux/fs.h
index b4d71b5e1ff2..fe1cef7bb677 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -892,8 +892,8 @@ struct file_lock_operations {
struct lock_manager_operations {
int (*lm_compare_owner)(struct file_lock *, struct file_lock *);
unsigned long (*lm_owner_key)(struct file_lock *);
- void (*lm_get_owner)(struct file_lock *, struct file_lock *);
- void (*lm_put_owner)(struct file_lock *);
+ fl_owner_t (*lm_get_owner)(fl_owner_t);
+ void (*lm_put_owner)(fl_owner_t);
void (*lm_notify)(struct file_lock *); /* unblock callback */
int (*lm_grant)(struct file_lock *, int);
bool (*lm_break)(struct file_lock *);
--
2.1.0
--
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