io_uring: io_kiocb_update_pos() should not touch file for non -1 offset

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-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: b4aec40015 ("io_uring: do not recalculate ppos unnecessarily")
Signed-off-by: Jens Axboe <axboe@kernel.dk>

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Jens Axboe 2022-04-11 09:48:30 -06:00

parent c4212f3eb8

commit 6f83ab22ad

1 changed files with 10 additions and 11 deletions

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fs/io_uring.c

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