path: root/fs/drop_caches.c
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authorDavid Howells <dhowells@redhat.com>2009-04-02 16:56:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:04:48 -0700
commit33e5d76979cf01e3834814fe0aea569d1d602c1a (patch)
tree58a03e5da59db203245da10db144a4f6f61a83ba /fs/drop_caches.c
parent5482415a5ecc0cd791a5d885cc3db8281401078f (diff)
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/drop_caches.c')
0 files changed, 0 insertions, 0 deletions