Re: [PATCH 4/4] vfs: RWF_NONBLOCK flag for preadv2

Milosz Tanski [off-list ref] writes:

Filesystems that generic_file_read_iter will not be allowed to perform
non-blocking reads. This only will read data if it's in the page cache and if
there is no page error (causing a re-read).

Christoph Hellwig wrote the filesystem specify code (cifs, ofs, shm, xfs).

Signed-off-by: Milosz Tanski <redacted>

Add in the 2 hunks from the other patches, as suggested by Christoph,
and you can add my:

Reviewed-by: Jeff Moyer <redacted>

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