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[Xen-ia64-devel] [PATCH 0/1] linux/blktap: fixing blktap.
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
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| Subject: | [Xen-ia64-devel] [PATCH 0/1] linux/blktap: fixing blktap. |
| From: | Isaku Yamahata <yamahata@xxxxxxxxxxxxx> |
| Date: | Tue, 28 Apr 2009 12:01:18 +0900 |
| Cc: | Isaku Yamahata <yamahata@xxxxxxxxxxxxx>, jbeulich@xxxxxxxxxx, xen-ia64-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Mon, 27 Apr 2009 20:04:56 -0700 |
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This patch series is for the release 3.4. It is reported by Kuwamura that blktap has been broken on ia64. But I think it is broken also on x86. The change set of 863:464a925d73f1 broken blktap because guest_user_pages() assumes vma->vm_private_data is arrays of struct page*. This patch series fixes it by not keeping vma in struct tap_blkif. Anyway it isn't allowed to keep the pointer to vma without holding the semaphore, mmap_sem. So this patch makes it get mm_struct and use find_vma() to find necessary vma. _______________________________________________ Xen-ia64-devel mailing list Xen-ia64-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-ia64-devel |
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