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SubjectRE: highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs. 2.4.9 -ac14/15(+stuff)]
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> -----Original Message-----
> From: Andrea Arcangeli [mailto:andrea@suse.de]
> Sent: Thursday, September 27, 2001 5:13 PM
> To: Macaulay, Robert
> Cc: Rik van Riel; Craig Kulesa; linux-kernel@vger.kernel.org; Bob
> Matthews; Marcelo Tosatti; Linus Torvalds
> Subject: highmem deadlock fix [was Re: VM in 2.4.10(+tweaks) vs.
> 2.4.9-ac14/15(+stuff)]
>
> @@ -2519,7 +2521,9 @@
> int tryagain = 1;
>
> do {
> - if (buffer_dirty(p) || buffer_locked(p)) {
> + if (unlikely(buffer_pending_IO(p)))
> + tryagain = 0;
> + else if (buffer_dirty(p) || buffer_locked(p)) {
> if (test_and_set_bit(BH_Wait_IO, &p->b_state)) {
> if (buffer_dirty(p)) {
> ll_rw_block(WRITE, 1, &p);
>

Im getting an undefined reference to the unlikely function in this patch.
-
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