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Message-Id: <20240116-flsplit-v1-12-c9d0f4370a5d@kernel.org>
Date: Tue, 16 Jan 2024 14:46:08 -0500
From: Jeff Layton <jlayton@...nel.org>
To: Christian Brauner <brauner@...nel.org>,
Alexander Viro <viro@...iv.linux.org.uk>,
Eric Van Hensbergen <ericvh@...nel.org>,
Latchesar Ionkov <lucho@...kov.net>,
Dominique Martinet <asmadeus@...ewreck.org>,
Christian Schoenebeck <linux_oss@...debyte.com>,
David Howells <dhowells@...hat.com>, Marc Dionne <marc.dionne@...istor.com>,
Xiubo Li <xiubli@...hat.com>, Ilya Dryomov <idryomov@...il.com>,
Alexander Aring <aahringo@...hat.com>, David Teigland <teigland@...hat.com>,
Miklos Szeredi <miklos@...redi.hu>,
Andreas Gruenbacher <agruenba@...hat.com>,
Trond Myklebust <trond.myklebust@...merspace.com>,
Anna Schumaker <anna@...nel.org>, Chuck Lever <chuck.lever@...cle.com>,
Neil Brown <neilb@...e.de>, Olga Kornievskaia <kolga@...app.com>,
Dai Ngo <Dai.Ngo@...cle.com>, Tom Talpey <tom@...pey.com>,
Jan Kara <jack@...e.cz>, Mark Fasheh <mark@...heh.com>,
Joel Becker <jlbec@...lplan.org>, Joseph Qi <joseph.qi@...ux.alibaba.com>,
Steve French <sfrench@...ba.org>, Paulo Alcantara <pc@...guebit.com>,
Ronnie Sahlberg <lsahlber@...hat.com>,
Shyam Prasad N <sprasad@...rosoft.com>, Namjae Jeon <linkinjeon@...nel.org>,
Sergey Senozhatsky <senozhatsky@...omium.org>,
Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Cc: linux-kernel@...r.kernel.org, v9fs@...ts.linux.dev,
linux-afs@...ts.infradead.org, ceph-devel@...r.kernel.org,
gfs2@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
linux-nfs@...r.kernel.org, ocfs2-devel@...ts.linux.dev,
linux-cifs@...r.kernel.org, samba-technical@...ts.samba.org,
linux-trace-kernel@...r.kernel.org, Jeff Layton <jlayton@...nel.org>
Subject: [PATCH 12/20] filelock: make __locks_delete_block and
__locks_wake_up_blocks take file_lock_core
Convert __locks_delete_block and __locks_wake_up_blocks to take a struct
file_lock_core pointer. Note that to accomodate this, we need to add a
new file_lock() wrapper to go from file_lock_core to file_lock.
Signed-off-by: Jeff Layton <jlayton@...nel.org>
---
fs/locks.c | 43 ++++++++++++++++++++++++++-----------------
1 file changed, 26 insertions(+), 17 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index eddf4d767d5d..6b8e8820dec9 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -92,6 +92,11 @@ static inline bool IS_LEASE(struct file_lock_core *flc)
#define IS_REMOTELCK(fl) (fl->fl_core.fl_pid <= 0)
+struct file_lock *file_lock(struct file_lock_core *flc)
+{
+ return container_of(flc, struct file_lock, fl_core);
+}
+
static bool lease_breaking(struct file_lock *fl)
{
return fl->fl_core.fl_flags & (FL_UNLOCK_PENDING | FL_DOWNGRADE_PENDING);
@@ -677,31 +682,35 @@ static void locks_delete_global_blocked(struct file_lock_core *waiter)
*
* Must be called with blocked_lock_lock held.
*/
-static void __locks_delete_block(struct file_lock *waiter)
+static void __locks_delete_block(struct file_lock_core *waiter)
{
- locks_delete_global_blocked(&waiter->fl_core);
- list_del_init(&waiter->fl_core.fl_blocked_member);
+ locks_delete_global_blocked(waiter);
+ list_del_init(&waiter->fl_blocked_member);
}
-static void __locks_wake_up_blocks(struct file_lock *blocker)
+static void __locks_wake_up_blocks(struct file_lock_core *blocker)
{
- while (!list_empty(&blocker->fl_core.fl_blocked_requests)) {
- struct file_lock *waiter;
+ while (!list_empty(&blocker->fl_blocked_requests)) {
+ struct file_lock_core *waiter;
+ struct file_lock *fl;
+
+ waiter = list_first_entry(&blocker->fl_blocked_requests,
+ struct file_lock_core, fl_blocked_member);
- waiter = list_first_entry(&blocker->fl_core.fl_blocked_requests,
- struct file_lock, fl_core.fl_blocked_member);
+ fl = file_lock(waiter);
__locks_delete_block(waiter);
- if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
- waiter->fl_lmops->lm_notify(waiter);
+ if ((IS_POSIX(waiter) || IS_FLOCK(waiter)) &&
+ fl->fl_lmops && fl->fl_lmops->lm_notify)
+ fl->fl_lmops->lm_notify(fl);
else
- wake_up(&waiter->fl_core.fl_wait);
+ wake_up(&waiter->fl_wait);
/*
* The setting of fl_blocker to NULL marks the "done"
* point in deleting a block. Paired with acquire at the top
* of locks_delete_block().
*/
- smp_store_release(&waiter->fl_core.fl_blocker, NULL);
+ smp_store_release(&waiter->fl_blocker, NULL);
}
}
@@ -743,8 +752,8 @@ int locks_delete_block(struct file_lock *waiter)
spin_lock(&blocked_lock_lock);
if (waiter->fl_core.fl_blocker)
status = 0;
- __locks_wake_up_blocks(waiter);
- __locks_delete_block(waiter);
+ __locks_wake_up_blocks(&waiter->fl_core);
+ __locks_delete_block(&waiter->fl_core);
/*
* The setting of fl_blocker to NULL marks the "done" point in deleting
@@ -799,7 +808,7 @@ static void __locks_insert_block(struct file_lock *blocker,
* waiter, but might not conflict with blocker, or the requests
* and lock which block it. So they all need to be woken.
*/
- __locks_wake_up_blocks(waiter);
+ __locks_wake_up_blocks(&waiter->fl_core);
}
/* Must be called with flc_lock held. */
@@ -831,7 +840,7 @@ static void locks_wake_up_blocks(struct file_lock *blocker)
return;
spin_lock(&blocked_lock_lock);
- __locks_wake_up_blocks(blocker);
+ __locks_wake_up_blocks(&blocker->fl_core);
spin_unlock(&blocked_lock_lock);
}
@@ -1186,7 +1195,7 @@ static int posix_lock_inode(struct inode *inode, struct file_lock *request,
* Ensure that we don't find any locks blocked on this
* request during deadlock detection.
*/
- __locks_wake_up_blocks(request);
+ __locks_wake_up_blocks(&request->fl_core);
if (likely(!posix_locks_deadlock(request, fl))) {
error = FILE_LOCK_DEFERRED;
__locks_insert_block(fl, request,
--
2.43.0
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