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| author | Michael Roth <mdroth@linux.vnet.ibm.com> | 2012-05-29 10:08:50 -0500 |
|---|---|---|
| committer | Michael Roth <mdroth@linux.vnet.ibm.com> | 2012-05-29 21:00:42 -0500 |
| commit | 9e2fa418fbe71dd472fe5a9cd89ca26d5b594920 (patch) | |
| tree | 471cfdc9d31482b3388132d8d769b4475ccd227e | |
| parent | eecae14724b64d43f9a44b9b4e69143961c201a3 (diff) | |
| download | qemu-9e2fa418fbe71dd472fe5a9cd89ca26d5b594920.tar.gz | |
qemu-ga: avoid blocking on atime update when reading /etc/mtab
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 <matsudadik@intellilink.co.jp>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
| -rw-r--r-- | qga/commands-posix.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/qga/commands-posix.c b/qga/commands-posix.c index 4a71c27c4a..00d035da95 100644 --- a/qga/commands-posix.c +++ b/qga/commands-posix.c @@ -345,7 +345,7 @@ 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"); |