From: Andrea Arcangeli
Date: Tue Mar 30 2004 - 22:13:59 EST
The xfs warning during truncate will be fixed with a later update
(Nathan is currently working on it).
next thing to do is to fixup the merging in mprotect.
In the meantime this is already mergeable in -mm if Andrew is
I'm not touching mremap at this time (i'll reistantiate the merging in
mprotect first, then Hugh testcase will work as well as in mainline). I
wait comments on the truncate/mremap race fixes (they clearly partly
collides with prio-tree but part of them seems shareable). That race
isn't trivial to fix but at the same time it doesn't worry me much right
now. I could add the semaphore, but mremap is an extreme fast path for
some workload like apache, so I'm not going to risk a
scalability-slowdown in there with an obviously safe patch of taking the
i_shared_sem semaphore, because even if that race triggers the kernel
shouldn't crash anymore.
Changelog diff between 2.6.5-rc2-aa6 and 2.6.5-rc3-aa1:
Files 2.6.5-rc2-aa6/anon-vma.gz and 2.6.5-rc3-aa1/anon-vma.gz differ
Track anonymous pages generated by cows on dma regions
(bug spotted by Hugh Dickins).
Files 2.6.5-rc2-aa6/extraversion and 2.6.5-rc3-aa1/extraversion differ
Only in 2.6.5-rc3-aa1: initramfs-search-for-init
Initramfs handy patch from -mm.
Files 2.6.5-rc2-aa6/prio-tree.gz and 2.6.5-rc3-aa1/prio-tree.gz differ
Fix xfs to check nonlinear mappings too.
Fix x86-64 compilation.
Only in 2.6.5-rc3-aa1: tag-writeback-pages-fix.patch.gz
Avoid crashes in rw_swap_page_sync due -mm writeback changes,
final (more highlevel) fix from Andrew.
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