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author | David Howells <dhowells@redhat.com> | 2009-04-03 01:56:32 +0200 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 04:04:48 +0200 |
commit | 33e5d76979cf01e3834814fe0aea569d1d602c1a (patch) | |
tree | 58a03e5da59db203245da10db144a4f6f61a83ba /fs/fs-writeback.c | |
parent | fb: nvidiafb recognizes geforcego 7300 chip as mobile (diff) | |
download | linux-33e5d76979cf01e3834814fe0aea569d1d602c1a.tar.xz linux-33e5d76979cf01e3834814fe0aea569d1d602c1a.zip |
nommu: fix a number of issues with the per-MM VMA patch
Fix a number of issues with the per-MM VMA patch:
(1) Make mmap_pages_allocated an atomic_long_t, just in case this is used on
a NOMMU system with more than 2G pages. Makes no difference on a 32-bit
system.
(2) Report vma->vm_pgoff * PAGE_SIZE as a 64-bit value, not a 32-bit value,
lest it overflow.
(3) Move the allocation of the vm_area_struct slab back for fork.c.
(4) Use KMEM_CACHE() for both vm_area_struct and vm_region slabs.
(5) Use BUG_ON() rather than if () BUG().
(6) Make the default validate_nommu_regions() a static inline rather than a
#define.
(7) Make free_page_series()'s objection to pages with a refcount != 1 more
informative.
(8) Adjust the __put_nommu_region() banner comment to indicate that the
semaphore must be held for writing.
(9) Limit the number of warnings about munmaps of non-mmapped regions.
Reported-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Greg Ungerer <gerg@snapgear.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/fs-writeback.c')
0 files changed, 0 insertions, 0 deletions