From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: [PATCH 1/5] kernfs: make kernfs_open_file->mmapped a bitfield Date: Tue, 20 Dec 2016 11:12:18 -0500 Message-ID: <20161220161222.15234-2-tj@kernel.org> References: <20161220161222.15234-1-tj@kernel.org> Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references; bh=PWT8jyi+467bCCM466udrznCIcMTN1m5TFw7kY3OaZo=; b=pShVDpMmMEaxfV5eO5rrMtaJQkfSnrqOaff8kKbQFlIYIkp60A7QBRYpIvOCmfl7Ah IlzdGiA2deLmwU/mTLuGo9Ys7L6jOHsCkrhdp2akErO6XQd+yLf7Rx/Z4QWU+yq+yZh7 afJcJlV4/ErDUx9x6z/oHgVlkQtjA2LSZWY2RpKLXVznk7xQcfD0+VJRVdPHwppfTZgy IvZtTrZohmrFDv1SnA2uNZI7ZvX0W05QpIy05ieL+ZoaPyXcbMZcTDe6SpnCgdLHz3zM /aVlXgbRItoVv12J5Qz6/d5LhZ7KtsgRhOc1j1KUK/t7slP9TwZiup3/P+MgbyrrB4yy wsaw== In-Reply-To: <20161220161222.15234-1-tj@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: gregkh@linuxfoundation.org, lizefan@huawei.com, hannes@cmpxchg.org Cc: linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, kernel-team@fb.com, Tejun Heo More kernfs_open_file->mutex synchronized flags are planned to be added. Convert ->mmapped to a bitfield in preparation. While at it, make kernfs_fop_mmap() use "true" instead of "1" on ->mmapped. Signed-off-by: Tejun Heo Cc: Greg Kroah-Hartman --- fs/kernfs/file.c | 2 +- include/linux/kernfs.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c index 78219d5..d0b6fb1 100644 --- a/fs/kernfs/file.c +++ b/fs/kernfs/file.c @@ -516,7 +516,7 @@ static int kernfs_fop_mmap(struct file *file, struct vm_area_struct *vma) goto out_put; rc = 0; - of->mmapped = 1; + of->mmapped = true; of->vm_ops = vma->vm_ops; vma->vm_ops = &kernfs_vm_ops; out_put: diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h index 7056238..afd4e5a 100644 --- a/include/linux/kernfs.h +++ b/include/linux/kernfs.h @@ -185,7 +185,7 @@ struct kernfs_open_file { char *prealloc_buf; size_t atomic_write_len; - bool mmapped; + bool mmapped:1; const struct vm_operations_struct *vm_ops; }; -- 2.9.3