On Fri, Feb 03, 2012 at 11:15:41PM +0400, Cyrill Gorcunov wrote:
> On error mmap returns MAP_FAILED so we
> need a proper test here.
>
Pekka, pick this one instead -- a caller is expecting null/not-null
only.
Cyrill
---
kvm tools: Fix test for mmap failure
On error mmap returns MAP_FAILED so we
need a proper test here.
Signed-off-by: Cyrill Gorcunov <gorcunov@xxxxxxxxx>
---
tools/kvm/hw/pci-shmem.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
Index: linux-2.6.git/tools/kvm/hw/pci-shmem.c
===================================================================
--- linux-2.6.git.orig/tools/kvm/hw/pci-shmem.c
+++ linux-2.6.git/tools/kvm/hw/pci-shmem.c
@@ -207,10 +207,11 @@ static void *setup_shmem(const char *key
}
mem = mmap(NULL, len,
PROT_READ | PROT_WRITE, MAP_SHARED | MAP_NORESERVE, fd, 0);
- close(fd);
-
- if (mem == NULL)
+ if (mem == MAP_FAILED) {
pr_warning("Failed to mmap shared memory file");
+ mem = NULL;
+ }
+ close(fd);
return mem;
}
--
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