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[PATCH] xip: madvice/fadvice: execute in place

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Make sys_madvice/fadvice return sane with xip.

Signed-off-by: Carsten Otte <cotte@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Carsten Otte 2005-06-23 22:05:29 -07:00 committed by Linus Torvalds
parent eb6fe0c388
commit fe77ba6f4f
2 changed files with 9 additions and 0 deletions
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4
mm/fadvise.c
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@ -43,6 +43,10 @@ asmlinkage long sys_fadvise64_64(int fd, loff_t offset, loff_t len, int advice)
goto out;
}
if (mapping->a_ops->get_xip_page)
/* no bad return value, but ignore advice */
goto out;
/* Careful about overflows. Len == 0 means "as much as possible" */
endbyte = offset + len;
if (!len || endbyte < len)

5
mm/madvise.c
View file

@ -86,6 +86,11 @@ static long madvise_willneed(struct vm_area_struct * vma,
if (!file)
return -EBADF;
if (file->f_mapping->a_ops->get_xip_page) {
/* no bad return value, but ignore advice */
return 0;
}
*prev = vma;
start = ((start - vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
if (end > vma->vm_end)