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(parent: 226ae1b) | patch
io_uring/memmap: optimise single folio regions
authorPavel Begunkov <asml.silence@gmail.com>
Fri, 29 Nov 2024 13:34:28 +0000 (13:34 +0000)
committerJens Axboe <axboe@kernel.dk>
Mon, 23 Dec 2024 15:17:16 +0000 (08:17 -0700)
commitc4d0ac1c1567ee822529124a3dc10b384838c3bc
tree9655ea72d41aed37f8d3f414432b57b02d4ecd1atree
parent226ae1b4d1111b0b0041677b58371af9b8cd31a9commit | diff
io_uring/memmap: optimise single folio regions

We don't need to vmap if memory is already physically contiguous. There
are two important cases it covers: PAGE_SIZE regions and huge pages.
Use io_check_coalesce_buffer() to get the number of contiguous folios.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d5240af23064a824c29d14d2406f1ae764bf4505.1732886067.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
io_uring/memmap.c diff | blob | history
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