Messages in this thread | | | Date | Sat, 26 May 2001 05:11:56 +0200 | From | Andrea Arcangeli <> | Subject | Re: Linux-2.4.5 |
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On Fri, May 25, 2001 at 10:49:38PM -0400, Ben LaHaise wrote: > Highmem. 0 free pages in ZONE_NORMAL. Now try to allocate a buffer_head.
That's a longstanding deadlock, it was there the first time I read fs/buffer.c, nothing related to highmem, we have it in 2.2 too. Also getblk is deadlock prone in a smiliar manner.
Can you try to simply change NR_RESERVED to say 200*MAX_BUF_PER_PAGE and see if it makes a difference? The unused_list logic doesn't give a guarantee either and it's one of the "hiding" logics, but it was working pretty well usually, maybe something changed that needs more than 2 pages (16 bh) reserved?
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