fuse: allow kernel to access "direct_io" files

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Allow the kernel read and write on "direct_io" files.  This is
necessary for nfs export and execute support.

The implementation is simple: if an access from the kernel is
detected, don't perform get_user_pages(), just use the kernel address
provided by the requester to copy from/to the userspace filesystem.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>

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This commit is contained in:

Miklos Szeredi 2009-04-02 14:25:34 +02:00

parent 833bb3046b

commit f4975c67dd

2 changed files with 31 additions and 12 deletions

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1

fs/fuse/dir.c

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42

fs/fuse/file.c

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