Messages in this thread Patch in this message | | | Date | Thu, 14 Jun 2001 09:59:43 -0300 (BRT) | From | Marcelo Tosatti <> | Subject | [PATCH] Avoid !__GFP_IO allocations to eat from memory reservations |
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Message-ID: <Pine.LNX.4.21.0106140949550.8439-100000@freak.distro.conectiva> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII
Linus,
In pre3, GFP_BUFFER allocations can eat from the "emergency" memory reservations in case try_to_free_pages() fails for those allocations in __alloc_pages().
Here goes the (tested) patch to fix that:
--- linux/mm/page_alloc.c.orig Thu Jun 14 11:00:14 2001 +++ linux/mm/page_alloc.c Thu Jun 14 11:32:56 2001 @@ -453,6 +453,12 @@ int progress = try_to_free_pages(gfp_mask); if (progress || gfp_mask & __GFP_IO) goto try_again; + /* + * Fail in case no progress was made and the + * allocation may not be able to block on IO. + */ + else + return NULL; } } } - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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