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authorDavid Herrmann <dh.herrmann@gmail.com>2014-08-09 01:25:34 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-09 02:57:31 +0400
commit87b2d44026e0e315a7401551e95b189ac4b28217 (patch)
treeae066f8f409be64b9d9ca192d470c0c505b520a9 /mm
parent4f5ce5e8d7e2da3c714df8a7fa42edb9f992fc52 (diff)
downloadlinux-87b2d44026e0e315a7401551e95b189ac4b28217.tar.xz
selftests: add memfd/sealing page-pinning tests
Setting SEAL_WRITE is not possible if there're pending GUP users. This commit adds selftests for memfd+sealing that use FUSE to create pending page-references. FUSE is very helpful here in that it allows us to delay direct-IO operations for an arbitrary amount of time. This way, we can force the kernel to pin pages and then run our normal selftests. Signed-off-by: David Herrmann <dh.herrmann@gmail.com> Acked-by: Hugh Dickins <hughd@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: Ryan Lortie <desrt@desrt.ca> Cc: Lennart Poettering <lennart@poettering.net> Cc: Daniel Mack <zonque@gmail.com> Cc: Andy Lutomirski <luto@amacapital.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
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