28 Apr, 2008
1 commit
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Nothing in the tree uses nopage any more. Remove support for it in the
core mm code and documentation (and a few stray references to it in
comments).Signed-off-by: Nick Piggin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
16 Feb, 2007
3 commits
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My mincore also forgot about crossing vmas.
Signed-off-by: Nick Piggin
Signed-off-by: Linus Torvalds -
Paper bag time. Thanks to Randy for noticing that I didn't actually assign
'present' to anything.Unfortunately my original patch passed the few simple test cases I gave it,
purely by coincidence.Signed-off-by: Nick Piggin
Signed-off-by: Linus Torvalds -
Fix mincore-anon patch to compile with CONFIG_SWAP=n
Signed-off-by: Nick Piggin
Signed-off-by: Linus Torvalds
13 Feb, 2007
1 commit
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Make mincore work for anon mappings, nonlinear, and migration entries.
Based on patch from Linus Torvalds .Signed-off-by: Nick Piggin
Acked-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
18 Dec, 2006
1 commit
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fix a typo, sys_mincore() needs min().
Signed-off-by: Oleg Nesterov
Signed-off-by: Linus "I'm a moron" Torvalds
17 Dec, 2006
2 commits
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Hugh Dickins correctly points out that mincore() is actually _supposed_
to fail on an unmapped hole in the user address space, rather than
return valid ("empty") information about the hole. This just simplifies
the problem further (I had been misled by our previous confusing and
complicated way of doing mincore()).Also, in the unlikely situation that we can't allocate a temporary
kernel buffer, we should actually return EAGAIN, not ENOMEM, to keep the
"unmapped hole" and "allocation failure" error cases separate.Finally, add a comment about our stupid historical lack of support for
anonymous mappings. I'll fix that if somebody reminds me after 2.6.20
is out.Acked-by: Hugh Dickins
Signed-off-by: Linus Torvalds -
Doug Chapman noticed that mincore() will doa "copy_to_user()" of the
result while holding the mmap semaphore for reading, which is a big
no-no. While a recursive read-lock on a semaphore in the case of a page
fault happens to work, we don't actually allow them due to deadlock
schenarios with writers due to fairness issues.Doug and Marcel sent in a patch to fix it, but I decided to just rewrite
the mess instead - not just fixing the locking problem, but making the
code smaller and (imho) much easier to understand.Cc: Doug Chapman
Cc: Marcel Holtmann
Cc: Hugh Dickins
Cc: Andrew Morton
Signed-off-by: Linus Torvalds
20 Apr, 2005
1 commit
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Remove use of FIRST_USER_PGD_NR from sys_mincore: it's inconsistent (no other
syscall refers to it), unnecessary (sys_mincore loops over vmas further down)
and incorrect (misses user addresses in ARM's first pgd).Signed-off-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 Apr, 2005
1 commit
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.Let it rip!
