On 02.02.2007 [15:36:25 -0800], Nishanth Aravamudan wrote:
> commit 122c260924a811b57e6c686004964d4b020ed29d
> Author: Nishanth Aravamudan <[EMAIL PROTECTED]>
> Date: Fri Feb 2 13:13:48 2007 -0800
>
> elflink: store extracopy information
>
> Add a few fields to the seg_info structure to store the starting address
> and size of the extracopy area for use by the next patch to drop
> pagecache pages. If the extra_vaddr field is NULL, then the pagecache
> dropping code assumes this means there was no extracopy area. This
> method uses the start address and size to represent the extracopy area.
>
> Signed-off-by: Nishanth Aravamudan <[EMAIL PROTECTED]>
>
> ---
>
Would help if this patch actually worked :)
You need the following fix-up to get it to work when extracopy is not
involved:
Signed-off-by: Nishanth Aravamudan <[EMAIL PROTECTED]>
diff --git a/elflink.c b/elflink.c
index 08180fd..012a743 100644
--- a/elflink.c
+++ b/elflink.c
@@ -279,6 +279,7 @@ static void parse_phdrs(Elf_Ehdr *ehdr)
htlb_seg_table[htlb_num_segs].memsz = memsz;
htlb_seg_table[htlb_num_segs].prot = prot;
htlb_seg_table[htlb_num_segs].phdr = i;
+ htlb_seg_table[htlb_num_segs].extra_vaddr = NULL;
htlb_num_segs++;
}
}
@@ -589,9 +590,12 @@ static int prepare_segment(struct seg_info *seg)
* the size of the shared mapping.
*/
get_extracopy(seg);
- size = ALIGN((unsigned long)seg->extra_vaddr +
- seg->extrasz - (unsigned long)seg->vaddr,
- hpage_size);
+ if (seg->extra_vaddr) {
+ size = ALIGN((unsigned long)seg->extra_vaddr + seg->extrasz -
+ (unsigned long)seg->vaddr, hpage_size);
+ } else {
+ size = ALIGN(seg->filesz, hpage_size);
+ }
/* Prepare the hugetlbfs file */
--
Nishanth Aravamudan <[EMAIL PROTECTED]>
IBM Linux Technology Center
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