io_uring/kbuf: Allow the full buffer id space for provided buffers

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[ Upstream commit f74c746e47 ]

nbufs tracks the number of buffers and not the last bgid. In 16-bit, we
have 2^16 valid buffers, but the check mistakenly rejects the last
bid. Let's fix it to make the interface consistent with the
documentation.

Fixes: ddf0322db7 ("io_uring: add IORING_OP_PROVIDE_BUFFERS")
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Link: https://lore.kernel.org/r/20231005000531.30800-3-krisman@suse.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

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Gabriel Krisman Bertazi 2023-10-04 20:05:30 -04:00 • committed by Greg Kroah-Hartman

parent 60db638be5

commit 32b15fef33

1 changed files with 7 additions and 4 deletions

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io_uring/kbuf.c

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