do_generic_file_read(): fail immediately if killed

If a fatal signal has been received, fail immediately instead of trying
to read more data.

If wait_on_page_locked_killable() was interrupted then this page is most
likely is not PageUptodate() and in this case do_generic_file_read()
will fail after lock_page_killable().

See also commit ebded02788b5 ("mm: filemap: avoid unnecessary calls to
lock_page when waiting for IO to complete during a read")

[[email protected]: changelog addition]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Bart Van Assche <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Acked-by: Oleg Nesterov <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions