Messages in this thread | | | Date | Thu, 4 Jun 2009 10:09:49 -0400 | From | Theodore Tso <> | Subject | Re: [PATCH 05/11] ext4: Make sure blocks are properly allocated under mmaped page even when blocksize < pagesize |
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On Wed, May 27, 2009 at 03:01:02PM +0200, Jan Kara wrote: > In a situation like: > truncate(f, 1024); > a = mmap(f, 0, 4096); > a[0] = 'a'; > truncate(f, 4096); > > we end up with a dirty page which does not have all blocks allocated / > reserved. Fix the problem by using new VFS infrastructure. > > Signed-off-by: Jan Kara <jack@suse.cz>
One warning --- this patch will have a slight patch conflict with the patch ext4-convert-markers-to-tracepoints in the ext4 patch queue.
The ext4-convert-markers-to-tracepoints patch is also in the unstable part of the patch queue, since it is waiting for patches allowing tracepoints to be used in modules to be merged into mainline at the next merge window. It's a very minor, easy fix-up, but depending who which patch series gets merged first, there might be a minor fixup required.
- Ted
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