From: Jeff Layton <jlayton@kernel.org>
To: Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Chuck Lever <chuck.lever@oracle.com>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Eric Van Hensbergen <ericvh@kernel.org>,
Latchesar Ionkov <lucho@ionkov.net>,
Dominique Martinet <asmadeus@codewreck.org>,
Christian Schoenebeck <linux_oss@crudebyte.com>,
David Howells <dhowells@redhat.com>,
Marc Dionne <marc.dionne@auristor.com>,
Xiubo Li <xiubli@redhat.com>, Ilya Dryomov <idryomov@gmail.com>,
Alexander Aring <aahringo@redhat.com>,
David Teigland <teigland@redhat.com>,
Andreas Gruenbacher <agruenba@redhat.com>,
Neil Brown <neilb@suse.de>, Olga Kornievskaia <kolga@netapp.com>,
Dai Ngo <Dai.Ngo@oracle.com>, Tom Talpey <tom@talpey.com>,
Trond Myklebust <trond.myklebust@hammerspace.com>,
Anna Schumaker <anna@kernel.org>, Mark Fasheh <mark@fasheh.com>,
Joel Becker <jlbec@evilplan.org>,
Joseph Qi <joseph.qi@linux.alibaba.com>,
Steve French <sfrench@samba.org>,
Paulo Alcantara <pc@manguebit.com>,
Ronnie Sahlberg <ronniesahlberg@gmail.com>,
Shyam Prasad N <sprasad@microsoft.com>,
Namjae Jeon <linkinjeon@kernel.org>,
Sergey Senozhatsky <senozhatsky@chromium.org>,
Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org,
linux-fsdevel@vger.kernel.org, v9fs@lists.linux.dev,
linux-afs@lists.infradead.org, ceph-devel@vger.kernel.org,
gfs2@lists.linux.dev, linux-nfs@vger.kernel.org,
ocfs2-devel@lists.linux.dev, linux-cifs@vger.kernel.org,
Jeff Layton <jlayton@kernel.org>
Subject: [PATCH v3 04/47] filelock: add some new helper functions
Date: Wed, 31 Jan 2024 18:01:45 -0500 [thread overview]
Message-ID: <20240131-flsplit-v3-4-c6129007ee8d@kernel.org> (raw)
In-Reply-To: <20240131-flsplit-v3-0-c6129007ee8d@kernel.org>
In later patches we're going to embed some common fields into a new
structure inside struct file_lock. Smooth the transition by adding some
new helper functions, and converting the core file locking code to use
them.
Signed-off-by: Jeff Layton <jlayton@kernel.org>
---
fs/locks.c | 18 +++++++++---------
include/linux/filelock.h | 23 +++++++++++++++++++++++
2 files changed, 32 insertions(+), 9 deletions(-)
diff --git a/fs/locks.c b/fs/locks.c
index 1eceaa56e47f..149070fd3b66 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -674,7 +674,7 @@ static void __locks_wake_up_blocks(struct file_lock *blocker)
if (waiter->fl_lmops && waiter->fl_lmops->lm_notify)
waiter->fl_lmops->lm_notify(waiter);
else
- wake_up(&waiter->fl_wait);
+ locks_wake_up(waiter);
/*
* The setting of fl_blocker to NULL marks the "done"
@@ -841,9 +841,9 @@ locks_delete_lock_ctx(struct file_lock *fl, struct list_head *dispose)
static bool locks_conflict(struct file_lock *caller_fl,
struct file_lock *sys_fl)
{
- if (sys_fl->fl_type == F_WRLCK)
+ if (lock_is_write(sys_fl))
return true;
- if (caller_fl->fl_type == F_WRLCK)
+ if (lock_is_write(caller_fl))
return true;
return false;
}
@@ -874,7 +874,7 @@ static bool posix_test_locks_conflict(struct file_lock *caller_fl,
struct file_lock *sys_fl)
{
/* F_UNLCK checks any locks on the same fd. */
- if (caller_fl->fl_type == F_UNLCK) {
+ if (lock_is_unlock(caller_fl)) {
if (!posix_same_owner(caller_fl, sys_fl))
return false;
return locks_overlap(caller_fl, sys_fl);
@@ -1055,7 +1055,7 @@ static int flock_lock_inode(struct inode *inode, struct file_lock *request)
break;
}
- if (request->fl_type == F_UNLCK) {
+ if (lock_is_unlock(request)) {
if ((request->fl_flags & FL_EXISTS) && !found)
error = -ENOENT;
goto out;
@@ -1107,7 +1107,7 @@ static int posix_lock_inode(struct inode *inode, struct file_lock *request,
ctx = locks_get_lock_context(inode, request->fl_type);
if (!ctx)
- return (request->fl_type == F_UNLCK) ? 0 : -ENOMEM;
+ return lock_is_unlock(request) ? 0 : -ENOMEM;
/*
* We may need two file_lock structures for this operation,
@@ -1228,7 +1228,7 @@ static int posix_lock_inode(struct inode *inode, struct file_lock *request,
continue;
if (fl->fl_start > request->fl_end)
break;
- if (request->fl_type == F_UNLCK)
+ if (lock_is_unlock(request))
added = true;
if (fl->fl_start < request->fl_start)
left = fl;
@@ -1279,7 +1279,7 @@ static int posix_lock_inode(struct inode *inode, struct file_lock *request,
error = 0;
if (!added) {
- if (request->fl_type == F_UNLCK) {
+ if (lock_is_unlock(request)) {
if (request->fl_flags & FL_EXISTS)
error = -ENOENT;
goto out;
@@ -1608,7 +1608,7 @@ void lease_get_mtime(struct inode *inode, struct timespec64 *time)
spin_lock(&ctx->flc_lock);
fl = list_first_entry_or_null(&ctx->flc_lease,
struct file_lock, fl_list);
- if (fl && (fl->fl_type == F_WRLCK))
+ if (fl && lock_is_write(fl))
has_lease = true;
spin_unlock(&ctx->flc_lock);
}
diff --git a/include/linux/filelock.h b/include/linux/filelock.h
index 085ff6ba0653..a814664b1053 100644
--- a/include/linux/filelock.h
+++ b/include/linux/filelock.h
@@ -147,6 +147,29 @@ int fcntl_setlk64(unsigned int, struct file *, unsigned int,
int fcntl_setlease(unsigned int fd, struct file *filp, int arg);
int fcntl_getlease(struct file *filp);
+static inline bool lock_is_unlock(struct file_lock *fl)
+{
+ return fl->fl_type == F_UNLCK;
+}
+
+static inline bool lock_is_read(struct file_lock *fl)
+{
+ return fl->fl_type == F_RDLCK;
+}
+
+static inline bool lock_is_write(struct file_lock *fl)
+{
+ return fl->fl_type == F_WRLCK;
+}
+
+static inline void locks_wake_up(struct file_lock *fl)
+{
+ wake_up(&fl->fl_wait);
+}
+
+/* for walking lists of file_locks linked by fl_list */
+#define for_each_file_lock(_fl, _head) list_for_each_entry(_fl, _head, fl_list)
+
/* fs/locks.c */
void locks_free_lock_context(struct inode *inode);
void locks_free_lock(struct file_lock *fl);
--
2.43.0
next prev parent reply other threads:[~2024-01-31 23:02 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-31 23:01 [PATCH v3 00/47] filelock: split file leases out of struct file_lock Jeff Layton
2024-01-31 23:01 ` [PATCH v3 01/47] filelock: fl_pid field should be signed int Jeff Layton
2024-01-31 23:01 ` [PATCH v3 02/47] filelock: rename some fields in tracepoints Jeff Layton
2024-01-31 23:01 ` [PATCH v3 03/47] filelock: rename fl_pid variable in lock_get_status Jeff Layton
2024-01-31 23:01 ` Jeff Layton [this message]
2024-02-05 11:36 ` [PATCH v3 04/47] filelock: add some new helper functions Christian Brauner
2024-02-05 11:55 ` Jeff Layton
2024-02-05 11:57 ` Christian Brauner
2024-02-05 12:06 ` Jeff Layton
2024-02-05 12:19 ` Christian Brauner
2024-01-31 23:01 ` [PATCH v3 05/47] 9p: rename fl_type variable in v9fs_file_do_lock Jeff Layton
2024-01-31 23:01 ` [PATCH v3 06/47] afs: convert to using new filelock helpers Jeff Layton
2024-01-31 23:01 ` [PATCH v3 07/47] ceph: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 08/47] dlm: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 09/47] gfs2: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 10/47] lockd: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 11/47] nfs: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 12/47] nfsd: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 13/47] ocfs2: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 14/47] smb/client: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 15/47] smb/server: " Jeff Layton
2024-01-31 23:01 ` [PATCH v3 16/47] filelock: drop the IS_* macros Jeff Layton
2024-01-31 23:01 ` [PATCH v3 17/47] filelock: split common fields into struct file_lock_core Jeff Layton
2024-01-31 23:01 ` [PATCH v3 18/47] filelock: have fs/locks.c deal with file_lock_core directly Jeff Layton
2024-01-31 23:02 ` [PATCH v3 19/47] filelock: convert more internal functions to use file_lock_core Jeff Layton
2024-01-31 23:02 ` [PATCH v3 20/47] filelock: make posix_same_owner take file_lock_core pointers Jeff Layton
2024-01-31 23:02 ` [PATCH v3 21/47] filelock: convert posix_owner_key to take file_lock_core arg Jeff Layton
2024-01-31 23:02 ` [PATCH v3 22/47] filelock: make locks_{insert,delete}_global_locks " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 23/47] filelock: convert locks_{insert,delete}_global_blocked Jeff Layton
2024-01-31 23:02 ` [PATCH v3 24/47] filelock: make __locks_delete_block and __locks_wake_up_blocks take file_lock_core Jeff Layton
2024-01-31 23:02 ` [PATCH v3 25/47] filelock: convert __locks_insert_block, conflict and deadlock checks to use file_lock_core Jeff Layton
2024-02-18 12:16 ` Jeff Layton
2024-01-31 23:02 ` [PATCH v3 26/47] filelock: convert fl_blocker to file_lock_core Jeff Layton
2024-01-31 23:02 ` [PATCH v3 27/47] filelock: clean up locks_delete_block internals Jeff Layton
2024-01-31 23:02 ` [PATCH v3 28/47] filelock: reorganize locks_delete_block and __locks_insert_block Jeff Layton
2024-01-31 23:02 ` [PATCH v3 29/47] filelock: make assign_type helper take a file_lock_core pointer Jeff Layton
2024-01-31 23:02 ` [PATCH v3 30/47] filelock: convert locks_wake_up_blocks to " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 31/47] filelock: convert locks_insert_lock_ctx and locks_delete_lock_ctx Jeff Layton
2024-01-31 23:02 ` [PATCH v3 32/47] filelock: convert locks_translate_pid to take file_lock_core Jeff Layton
2024-01-31 23:02 ` [PATCH v3 33/47] filelock: convert seqfile handling to use file_lock_core Jeff Layton
2024-01-31 23:02 ` [PATCH v3 34/47] 9p: adapt to breakup of struct file_lock Jeff Layton
2024-02-01 22:40 ` NeilBrown
2024-01-31 23:02 ` [PATCH v3 35/47] afs: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 36/47] ceph: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 37/47] dlm: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 38/47] gfs2: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 39/47] fuse: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 40/47] lockd: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 41/47] nfs: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 42/47] nfsd: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 43/47] ocfs2: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 44/47] smb/client: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 45/47] smb/server: " Jeff Layton
2024-01-31 23:02 ` [PATCH v3 46/47] filelock: remove temporary compatibility macros Jeff Layton
2024-01-31 23:02 ` [PATCH v3 47/47] filelock: split leases out of struct file_lock Jeff Layton
2024-02-01 22:49 ` [PATCH v3 00/47] filelock: split file " NeilBrown
2024-02-02 11:16 ` Christian Brauner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240131-flsplit-v3-4-c6129007ee8d@kernel.org \
--to=jlayton@kernel.org \
--cc=Dai.Ngo@oracle.com \
--cc=aahringo@redhat.com \
--cc=agruenba@redhat.com \
--cc=anna@kernel.org \
--cc=asmadeus@codewreck.org \
--cc=brauner@kernel.org \
--cc=ceph-devel@vger.kernel.org \
--cc=chuck.lever@oracle.com \
--cc=dhowells@redhat.com \
--cc=ericvh@kernel.org \
--cc=gfs2@lists.linux.dev \
--cc=idryomov@gmail.com \
--cc=jack@suse.cz \
--cc=jlbec@evilplan.org \
--cc=joseph.qi@linux.alibaba.com \
--cc=kolga@netapp.com \
--cc=linkinjeon@kernel.org \
--cc=linux-afs@lists.infradead.org \
--cc=linux-cifs@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-nfs@vger.kernel.org \
--cc=linux-trace-kernel@vger.kernel.org \
--cc=linux_oss@crudebyte.com \
--cc=lucho@ionkov.net \
--cc=marc.dionne@auristor.com \
--cc=mark@fasheh.com \
--cc=mathieu.desnoyers@efficios.com \
--cc=mhiramat@kernel.org \
--cc=miklos@szeredi.hu \
--cc=neilb@suse.de \
--cc=ocfs2-devel@lists.linux.dev \
--cc=pc@manguebit.com \
--cc=ronniesahlberg@gmail.com \
--cc=rostedt@goodmis.org \
--cc=senozhatsky@chromium.org \
--cc=sfrench@samba.org \
--cc=sprasad@microsoft.com \
--cc=teigland@redhat.com \
--cc=tom@talpey.com \
--cc=trond.myklebust@hammerspace.com \
--cc=v9fs@lists.linux.dev \
--cc=viro@zeniv.linux.org.uk \
--cc=xiubli@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).