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authorGeert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>2009-06-10 04:38:40 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-06-15 16:47:21 +1000
commit13685a1654b65357fb34066a98ef40445f7820fc (patch)
tree89a18aa144873b1224618fa399dd6654751ed2b6 /drivers
parentc2e95c6d7a9b9d8f023c3639edbb1da65ccd15ac (diff)
block: Add bio_list_peek()
Introduce bio_list_peek(), to obtain a pointer to the first bio on the bio_list without actually removing it from the list. This is needed when you want to serialize based on the list being empty or not. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Acked-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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