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[libvirt] [PATCH] qemuProcessBuildDestroyHugepagesPath: Don't warn on destroying non-existent path

This function is called unconditionally from qemuProcessStop to
make sure we leave no dangling dirs behind. However, whenever the
directory we want to rmdir() is not there (e.g. because it hasn't
been created in the first place because domain doesn't use
hugepages at all), we produce a warning like this:

2017-06-20 15:58:23.615+0000: 32638: warning :
qemuProcessBuildDestroyHugepagesPath:3363 : Unable to remove
hugepage path: /dev/hugepages/libvirt/qemu/1-instance-00000001

Fix this by not producing the warning on ENOENT.

Signed-off-by: Michal Privoznik <mprivozn redhat com>
 src/qemu/qemu_process.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index fa9990e5d..3b7f20be4 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -3358,7 +3358,8 @@ qemuProcessBuildDestroyHugepagesPath(virQEMUDriverPtr driver,
                     goto cleanup;
             } else {
-                if (rmdir(hugepagePath) < 0)
+                if (rmdir(hugepagePath) < 0 &&
+                    errno != ENOENT)
                     VIR_WARN("Unable to remove hugepage path: %s (errno=%d)",
                              hugepagePath, errno);

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