mirror of
https://git.yoctoproject.org/poky
synced 2026-02-27 11:59:40 +01:00
4253bded02
While invoking mtools frequently, the unblocking request caused race issue. Here is an example of syslinux [snip] dd if=/dev/zero of=floppy.img bs=1024 count=144 losetup /dev/loop1 floppy.img mkdosfs /dev/loop1 syslinux -i /dev/loop1 |plain floppy: device "/proc/6351/fd/3" busy (Resource temporarily unavailable): |Cannot initialize 'S:' |Bad target s:/ldlinux.sys [snip] The idea is from: https://bugzilla.redhat.com/show_bug.cgi?id=1235016 https://groups.google.com/a/chromium.org/forum/#!msg/chromium-os-dev/bRPUCFHoBTQ/ZjB8kjjx1vUJ (From OE-Core rev: 927fad7881841a58e1d88f3a6ce070eaa66ba1a5) Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
45 lines
1.3 KiB
Diff
45 lines
1.3 KiB
Diff
From 5bdbfe0a63fed48104b17412854b26ee2275869a Mon Sep 17 00:00:00 2001
|
|
From: Hongxu Jia <hongxu.jia@windriver.com>
|
|
Date: Wed, 22 Aug 2018 16:54:39 +0800
|
|
Subject: [PATCH] remove LOCK_NB to use blocking request
|
|
|
|
While invoking mtools frequently, the unblocking request
|
|
caused race issue. Here is an example of syslinux
|
|
[snip]
|
|
dd if=/dev/zero of=floppy.img bs=1024 count=144
|
|
losetup /dev/loop1 floppy.img
|
|
mkdosfs /dev/loop1
|
|
syslinux -i /dev/loop1
|
|
|plain floppy: device "/proc/6351/fd/3" busy (Resource temporarily unavailable):
|
|
|Cannot initialize 'S:'
|
|
|Bad target s:/ldlinux.sys
|
|
[snip]
|
|
|
|
The idea is from:
|
|
https://bugzilla.redhat.com/show_bug.cgi?id=1235016
|
|
https://groups.google.com/a/chromium.org/forum/#!msg/chromium-os-dev/bRPUCFHoBTQ/ZjB8kjjx1vUJ
|
|
|
|
Upstream-Status: Pending
|
|
|
|
Signed-off-by: Hongxu Jia <hongxu.jia@windriver.com>
|
|
---
|
|
lockdev.h | 2 +-
|
|
1 file changed, 1 insertion(+), 1 deletion(-)
|
|
|
|
diff --git a/lockdev.h b/lockdev.h
|
|
index 4467bc2..5a135ad 100644
|
|
--- a/lockdev.h
|
|
+++ b/lockdev.h
|
|
@@ -43,7 +43,7 @@ int lock_dev(int fd, int mode, struct device *dev)
|
|
return 0;
|
|
|
|
#if (defined(HAVE_FLOCK) && defined (LOCK_EX) && defined(LOCK_NB))
|
|
- if (flock(fd, (mode ? LOCK_EX : LOCK_SH)|LOCK_NB) < 0)
|
|
+ if (flock(fd, (mode ? LOCK_EX : LOCK_SH)) < 0)
|
|
#else /* FLOCK */
|
|
|
|
#if (defined(HAVE_LOCKF) && defined(F_TLOCK))
|
|
--
|
|
2.7.4
|
|
|