From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Layton Subject: [PATCH v7 10/17] locks: make /proc/locks show IS_FILE_PVT locks with a P suffix Date: Wed, 19 Mar 2014 16:45:54 -0400 Message-ID: <1395261961-10855-11-git-send-email-jlayton@redhat.com> References: <1395261961-10855-1-git-send-email-jlayton@redhat.com> Cc: linux-fsdevel@vger.kernel.org, bfields@fieldses.org To: viro@ZenIV.linux.org.uk Return-path: Received: from mail-qc0-f178.google.com ([209.85.216.178]:51441 "EHLO mail-qc0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755621AbaCSUq0 (ORCPT ); Wed, 19 Mar 2014 16:46:26 -0400 Received: by mail-qc0-f178.google.com with SMTP id i8so10386904qcq.23 for ; Wed, 19 Mar 2014 13:46:25 -0700 (PDT) In-Reply-To: <1395261961-10855-1-git-send-email-jlayton@redhat.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: In a later patch, we'll be adding a new type of lock that's owned by the struct file instead of the files_struct. Those sorts of locks will be flagged with a new IS_FILE_PVT flag. Add a "P" suffix to the POSIX lock output in /proc/locks for locks that have FL_FILE_PVT set to distinguish them from "classic" POSIX locks. Signed-off-by: Jeff Layton --- fs/locks.c | 9 +++++++-- include/linux/fs.h | 1 + 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/fs/locks.c b/fs/locks.c index 4d4e790150e0..f1b9b149dd39 100644 --- a/fs/locks.c +++ b/fs/locks.c @@ -135,6 +135,7 @@ #define IS_POSIX(fl) (fl->fl_flags & FL_POSIX) #define IS_FLOCK(fl) (fl->fl_flags & FL_FLOCK) #define IS_LEASE(fl) (fl->fl_flags & (FL_LEASE|FL_DELEG)) +#define IS_FILE_PVT(fl) (fl->fl_flags & FL_FILE_PVT) static bool lease_breaking(struct file_lock *fl) { @@ -2313,8 +2314,12 @@ static void lock_get_status(struct seq_file *f, struct file_lock *fl, seq_printf(f, "%lld:%s ", id, pfx); if (IS_POSIX(fl)) { - seq_printf(f, "%6s %s ", - (fl->fl_flags & FL_ACCESS) ? "ACCESS" : "POSIX ", + if (fl->fl_flags & FL_ACCESS) + seq_printf(f, "ACCESS"); + else + seq_printf(f, "POSIX%c", IS_FILE_PVT(fl) ? 'P' : ' '); + + seq_printf(f, " %s ", (inode == NULL) ? "*NOINODE*" : mandatory_lock(inode) ? "MANDATORY" : "ADVISORY "); } else if (IS_FLOCK(fl)) { diff --git a/include/linux/fs.h b/include/linux/fs.h index 7527d96913d3..5ddeb8de5e77 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -888,6 +888,7 @@ static inline int file_check_writeable(struct file *filp) #define FL_SLEEP 128 /* A blocking lock */ #define FL_DOWNGRADE_PENDING 256 /* Lease is being downgraded */ #define FL_UNLOCK_PENDING 512 /* Lease is being broken */ +#define FL_FILE_PVT 1024 /* lock is private to the file */ /* * Special return value from posix_lock_file() and vfs_lock_file() for -- 1.8.5.3