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xen-devel
[Xen-devel] Re: [PATCH] Allow lazy unmapping by taking extra page refere
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To: |
David Chinner <dgc@xxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH] Allow lazy unmapping by taking extra page references V3 |
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From: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Date: |
Wed, 24 Oct 2007 15:46:16 -0700 |
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Cc: |
Nick Piggin <nickpiggin@xxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, dean gaudet <dean@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Bøgeskov <xen-users@xxxxxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx, xfs-masters@xxxxxxxxxxx, Andi Kleen <andi@xxxxxxxxxxxxxx>, Morten@xxxxxxx, Mark Williamson <mark.williamson@xxxxxxxxxxxx> |
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Wed, 24 Oct 2007 15:47:12 -0700 |
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<20071024214826.GH66820511@xxxxxxx> |
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<p73sl439s7k.fsf@xxxxxxxxxxxxxx> <471CEEB4.9040807@xxxxxxxx> <20071022190740.GA1695@xxxxxxxxxxxxxxxxxx> <20071022223224.GC995458@xxxxxxx> <20071022233514.GA9057@xxxxxxxxxxxxxxxxxx> <20071023003641.GF995458@xxxxxxx> <20071023070414.GM66820511@xxxxxxx> <20071023093035.GB24536@xxxxxxxxxxxxxxxxxx> <20071024043619.GE66820511@xxxxxxx> <471ED35F.3020605@xxxxxxxx> <20071024214826.GH66820511@xxxxxxx> |
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Thunderbird 2.0.0.5 (X11/20070727) |
David Chinner wrote:
> Allow lazy unmapping of vmap()d regions be taking a reference
> on each page in the region being vmap()ed. The page references
> get released after the region is vunmap()ed, thereby ensuring
> we don't leave stray mappings on freed pages that could lead to
> problems pages being reallocated with incorrect mappings
> associated with them.
>
> Tested with XFS filesystems with 64k directory blocks with
> dirstress and XFSQA.
>
> Version 3:
> - compile on latest -git
>
Not quite:
CC mm/vmalloc.o
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c: In function
'vm_area_alloc_pagearray':
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: 'GFP_LEVEL_MASK'
undeclared (first use in this function)
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: (Each undeclared
identifier is reported only once
/home/jeremy/hg/xen/paravirt/linux/mm/vmalloc.c:338: error: for each function
it appears in.)
make[3]: *** [mm/vmalloc.o] Error 1
make[2]: *** [mm] Error 2
make[2]: *** Waiting for unfinished jobs....
GFP_RECLAM_MASK now?
J
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