The patch titled
uml: clean up after MADVISE_REMOVE
has been added to the -mm tree. Its filename is
uml-clean-up-after-madvise_remove.patch
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
From: Jeff Dike <jdike@xxxxxxxxxxx>
The MADVISE_REMOVE-checking code didn't clean up after itself.
Signed-off-by: Jeff Dike <jdike@xxxxxxxxxxx>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxx>
---
arch/um/os-Linux/process.c | 17 ++++++++++++-----
1 files changed, 12 insertions(+), 5 deletions(-)
diff -puN arch/um/os-Linux/process.c~uml-clean-up-after-madvise_remove arch/um/os-Linux/process.c
--- 25/arch/um/os-Linux/process.c~uml-clean-up-after-madvise_remove Fri Apr 28 16:55:55 2006
+++ 25-akpm/arch/um/os-Linux/process.c Fri Apr 28 16:55:55 2006
@@ -206,29 +206,36 @@ int os_drop_memory(void *addr, int lengt
int can_drop_memory(void)
{
void *addr;
- int fd;
+ int fd, ok = 0;
printk("Checking host MADV_REMOVE support...");
fd = create_mem_file(UM_KERN_PAGE_SIZE);
if(fd < 0){
printk("Creating test memory file failed, err = %d\n", -fd);
- return 0;
+ goto out;
}
addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
MAP_SHARED, fd, 0);
if(addr == MAP_FAILED){
printk("Mapping test memory file failed, err = %d\n", -errno);
- return 0;
+ goto out_close;
}
if(madvise(addr, UM_KERN_PAGE_SIZE, MADV_REMOVE) != 0){
printk("MADV_REMOVE failed, err = %d\n", -errno);
- return 0;
+ goto out_unmap;
}
printk("OK\n");
- return 1;
+ ok = 1;
+
+out_unmap:
+ munmap(addr, UM_KERN_PAGE_SIZE);
+out_close:
+ close(fd);
+out:
+ return ok;
}
void init_new_thread_stack(void *sig_stack, void (*usr1_handler)(int))
_
Patches currently in -mm which might be from jdike@xxxxxxxxxxx are
uml-fix-iomem-list-traversal.patch
uml-skas0-support-for-2g-2g-hosts.patch
uml-remove-null-checks-and-add-some-codingstyle.patch
uml-clean-up-after-madvise_remove.patch
uml-update-defconfig.patch
uml-error-handling-fixes.patch
-
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