forked from Minki/linux
87b2d44026
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>
15 lines
166 B
Bash
15 lines
166 B
Bash
#!/bin/sh
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if test -d "./mnt" ; then
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fusermount -u ./mnt
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rmdir ./mnt
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fi
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set -e
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mkdir mnt
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./fuse_mnt ./mnt
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./fuse_test ./mnt/memfd
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fusermount -u ./mnt
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rmdir ./mnt
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