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From: Christoph Hellwig <hch@lst.de>
To: Al Viro <viro@zeniv.linux.org.uk>,
	Linus Torvalds <torvalds@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>,
	linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org,
	linux-fsdevel@vger.kernel.org, linux-api@vger.kernel.org
Subject: [PATCH 04/21] devtmpfs: refactor devtmpfsd()
Date: Sun, 26 Jul 2020 09:13:39 +0200	[thread overview]
Message-ID: <20200726071356.287160-5-hch@lst.de> (raw)
In-Reply-To: <20200726071356.287160-1-hch@lst.de>

Split the main worker loop into a separate function.  This allows
devtmpfsd itself and devtmpfsd_setup to be marked __init, which will
allows us to call __init routines for the setup work.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 drivers/base/devtmpfs.c | 47 +++++++++++++++++++++++------------------
 1 file changed, 26 insertions(+), 21 deletions(-)

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index c9017e0584c003..a103ee7e229930 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -378,7 +378,30 @@ static int handle(const char *name, umode_t mode, kuid_t uid, kgid_t gid,
 		return handle_remove(name, dev);
 }
 
-static int devtmpfs_setup(void *p)
+static void __noreturn devtmpfs_work_loop(void)
+{
+	while (1) {
+		spin_lock(&req_lock);
+		while (requests) {
+			struct req *req = requests;
+			requests = NULL;
+			spin_unlock(&req_lock);
+			while (req) {
+				struct req *next = req->next;
+				req->err = handle(req->name, req->mode,
+						  req->uid, req->gid, req->dev);
+				complete(&req->done);
+				req = next;
+			}
+			spin_lock(&req_lock);
+		}
+		__set_current_state(TASK_INTERRUPTIBLE);
+		spin_unlock(&req_lock);
+		schedule();
+	}
+}
+
+static int __init devtmpfs_setup(void *p)
 {
 	int err;
 
@@ -396,31 +419,13 @@ static int devtmpfs_setup(void *p)
 	return err;
 }
 
-static int devtmpfsd(void *p)
+static int __init devtmpfsd(void *p)
 {
 	int err = devtmpfs_setup(p);
 
 	if (err)
 		return err;
-	while (1) {
-		spin_lock(&req_lock);
-		while (requests) {
-			struct req *req = requests;
-			requests = NULL;
-			spin_unlock(&req_lock);
-			while (req) {
-				struct req *next = req->next;
-				req->err = handle(req->name, req->mode,
-						  req->uid, req->gid, req->dev);
-				complete(&req->done);
-				req = next;
-			}
-			spin_lock(&req_lock);
-		}
-		__set_current_state(TASK_INTERRUPTIBLE);
-		spin_unlock(&req_lock);
-		schedule();
-	}
+	devtmpfs_work_loop();
 	return 0;
 }
 
-- 
2.27.0


  parent reply	other threads:[~2020-07-26  7:15 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-26  7:13 add file system helpers that take kernel pointers for the init code v3 Christoph Hellwig
2020-07-26  7:13 ` [PATCH 01/21] fs: refactor do_mount Christoph Hellwig
2020-07-26  7:13 ` [PATCH 02/21] fs: refactor ksys_umount Christoph Hellwig
2020-07-26  7:13 ` [PATCH 03/21] fs: push the getname from do_rmdir into the callers Christoph Hellwig
2020-07-26  7:13 ` Christoph Hellwig [this message]
2020-07-26  7:43   ` [PATCH 04/21] devtmpfs: refactor devtmpfsd() Greg Kroah-Hartman
2020-07-26  8:21     ` Christoph Hellwig
2020-07-26  7:13 ` [PATCH 05/21] init: initialize ramdisk_execute_command at compile time Christoph Hellwig
2020-07-26  7:13 ` [PATCH 06/21] init: mark create_dev as __init Christoph Hellwig
2020-07-26  7:13 ` [PATCH 07/21] init: add an init_mount helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 08/21] init: add an init_umount helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 09/21] init: add an init_unlink helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 10/21] init: add an init_rmdir helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 11/21] init: add an init_chdir helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 12/21] init: add an init_chroot helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 13/21] init: add an init_chown helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 14/21] init: add an init_chmod helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 15/21] init: add an init_eaccess helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 16/21] init: add an init_link helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 17/21] init: add an init_symlink helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 18/21] init: add an init_mkdir helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 19/21] init: add an init_mknod helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 20/21] init: add an init_stat helper Christoph Hellwig
2020-07-26  7:13 ` [PATCH 21/21] init: add an init_utimes helper Christoph Hellwig
2020-07-26 15:49 ` add file system helpers that take kernel pointers for the init code v3 Linus Torvalds
2020-07-26 15:52   ` Christoph Hellwig
2020-07-26 16:21     ` Al Viro
2020-07-26 16:24       ` Christoph Hellwig
2020-07-26 16:26         ` Christoph Hellwig
2020-07-26 16:33           ` Al Viro

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