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(parent: c4212f3) | patch
io_uring: io_kiocb_update_pos() should not touch file for non -1 offset
authorJens Axboe <axboe@kernel.dk>
Mon, 11 Apr 2022 15:48:30 +0000 (09:48 -0600)
committerJens Axboe <axboe@kernel.dk>
Mon, 11 Apr 2022 22:38:21 +0000 (16:38 -0600)
commit6f83ab22adcb77a5824d2c274dace0d99e21319f
tree4cd7f5945b9b85df8aa99e446b8aa1a779777ec6tree | snapshot
parentc4212f3eb89fd5654f0a6ed2ee1d13fcb86cb664commit | diff
io_uring: io_kiocb_update_pos() should not touch file for non -1 offset

-1 tells use to use the current position, but we check if the file is
a stream regardless of that. Fix up io_kiocb_update_pos() to only
dip into file if we need to. This is both more efficient and also drops
12 bytes of text on aarch64 and 64 bytes on x86-64.

Fixes: b4aec4001595 ("io_uring: do not recalculate ppos unnecessarily")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
fs/io_uring.c diff | blob | blame | history
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