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Message-ID: <20070531231354.GR20632@ca-server1.us.oracle.com> Date: Thu, 31 May 2007 16:13:54 -0700 From: Mark Fasheh <mark.fasheh@...cle.com> To: Andrew Morton <akpm@...ux-foundation.org> Cc: linux-kernel@...r.kernel.org, Nick Piggin <npiggin@...e.de> Subject: Re: 2.6.22-rc3-mm1 - page_mkwrite() breakage On Wed, May 30, 2007 at 11:58:23PM -0700, Andrew Morton wrote: > git-ocfs2.patch Andrew, thanks for getting that back in there. mm-fix-fault-vs-invalidate-race-for-linear-mappings.patch broke ocfs2 shared writable mmap. We hang on a page lock because ->page_mkwrite() is being called with the page already locked: + /* + * For consistency in subsequent calls, make the nopage_page always + * locked. + */ + if (unlikely(!(vma->vm_flags & VM_CAN_INVALIDATE))) + lock_page(nopage_page); It wasn't previously being called with the page lock held, intentionally. --Mark -- Mark Fasheh Senior Software Developer, Oracle mark.fasheh@...cle.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.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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