From a5bb524bbe85879bccfec954f693c6ea826281db Mon Sep 17 00:00:00 2001 Message-Id: In-Reply-To: <27a73856ecc481c66c7afac8171f753887f32e31.1342518105.git.minovotn@redhat.com> References: <27a73856ecc481c66c7afac8171f753887f32e31.1342518105.git.minovotn@redhat.com> From: Luiz Capitulino Date: Tue, 5 Jun 2012 14:58:51 +0200 Subject: [PATCH 41/41] qemu-ga: avoid blocking on atime update when reading /etc/mtab RH-Author: Luiz Capitulino Message-id: <1338908331-15633-37-git-send-email-lcapitulino@redhat.com> Patchwork-id: 39933 O-Subject: [PATCH RHEL6.4 qemu-kvm 36/36] qemu-ga: avoid blocking on atime update when reading /etc/mtab Bugzilla: 827612 RH-Acked-by: Paolo Bonzini RH-Acked-by: Juan Quintela RH-Acked-by: Laszlo Ersek From: Michael Roth Currently we re-read/re-process /etc/mtab to get an updated list of mounts when guest-fsfreeze-thaw is called. This can cause an atime update on /etc/mtab, which will block if we're in a frozen state. Instead, use /proc's version of mtab, which may not be up-to-date with options passed via -o remount, but is compatible for our use cases since we only care about the filesystem type. Reported-by: Matsuda, Daiki Signed-off-by: Michael Roth (cherry picked from commit 9e2fa418fbe71dd472fe5a9cd89ca26d5b594920) Signed-off-by: Luiz Capitulino --- qga/commands-posix.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) Signed-off-by: Michal Novotny --- qga/commands-posix.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/qga/commands-posix.c b/qga/commands-posix.c index 1077ae8..d825c2c 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -380,7 +380,7 @@ static int guest_fsfreeze_build_mount_list(GuestFsfreezeMountList *mounts) { struct mntent *ment; GuestFsfreezeMount *mount; - char const *mtab = MOUNTED; + char const *mtab = "/proc/self/mounts"; FILE *fp; fp = setmntent(mtab, "r"); -- 1.7.10.4