2020-01-15 18:43:08

by Rasmus Villemoes

[permalink] [raw]
Subject: [PATCH 2/5] devtmpfs: factor out setup part of devtmpfsd()

Factor out the setup part of devtmpfsd() to make it a bit easier to
see that we always call setup_done() exactly once (provided of course
the kthread is succesfully created).

Signed-off-by: Rasmus Villemoes <[email protected]>
---
drivers/base/devtmpfs.c | 17 ++++++++++++-----
1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/drivers/base/devtmpfs.c b/drivers/base/devtmpfs.c
index ccb046fe12b7..963889331bb4 100644
--- a/drivers/base/devtmpfs.c
+++ b/drivers/base/devtmpfs.c
@@ -388,7 +388,7 @@ static int handle(const char *name, umode_t mode, kuid_t uid, kgid_t gid,
return handle_remove(name, dev);
}

-static int devtmpfsd(void *p)
+static int devtmpfs_setup(void *p)
{
int err;

@@ -400,7 +400,18 @@ static int devtmpfsd(void *p)
goto out;
ksys_chdir("/.."); /* will traverse into overmounted root */
ksys_chroot(".");
+out:
+ *(int *)p = err;
complete(&setup_done);
+ return err;
+}
+
+static int devtmpfsd(void *p)
+{
+ int err = devtmpfs_setup(p);
+
+ if (err)
+ return err;
while (1) {
spin_lock(&req_lock);
while (requests) {
@@ -421,10 +432,6 @@ static int devtmpfsd(void *p)
schedule();
}
return 0;
-out:
- *(int *)p = err;
- complete(&setup_done);
- return err;
}

/*
--
2.23.0