[lkml]   [2002]   [May]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectWriting to the swap space

For swsusp, I need to write to the swap space.

I used technique similar to this:

static void mark_swapfiles(swp_entry_t prev, int mode)
swp_entry_t entry;
union diskpage *cur;

cur = (union diskpage *)get_free_page(GFP_ATOMIC);
if (!cur)
panic("Out of memory in mark_swapfiles");
/* XXX: this is dirty hack to get first page of swap file */
entry = SWP_ENTRY(root_swap, 0);
lock_page(virt_to_page((unsigned long)cur));
rw_swap_page_nolock(READ, entry, (char *) cur);

... modify cur->fields...

lock_page(virt_to_page((unsigned long)cur));
rw_swap_page_nolock(WRITE, entry, (char *)cur);

free_page((unsigned long)cur);

It seems not to work any more. Some io is done, but it is not
synchronous any more, and it does not seem to hit the disk.

What am I doing wrong, or is there something wrong in 2.5.12/2.5.13?
(about SSSCA) "I don't say this lightly. However, I really think that the U.S.
no longer is classifiable as a democracy, but rather as a plutocracy." --hpa
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-03-22 13:22    [W:0.028 / U:0.248 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site