diff options
| author | Pavel Begunkov <asml.silence@gmail.com> | 2025-04-20 10:31:18 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-04-21 05:11:40 -0600 |
| commit | 77231d4e46555d30289b1909c2a2f26bcf00f08c (patch) | |
| tree | afba28ed2b3a865aa22e8576515639ed07201246 /io_uring/memmap.c | |
| parent | 59bc1ab922bbb36558292c204e56ab951e833384 (diff) | |
io_uring/zcrx: let zcrx choose region for mmaping
In preparation for adding multiple ifqs, add a helper returning a region
for mmaping zcrx refill queue. For now it's trivial and returns the same
ctx global ->zcrx_region.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d9006e2ef8cd5e5b337c2ba2228ede8409eb60f2.1745141261.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring/memmap.c')
| -rw-r--r-- | io_uring/memmap.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/io_uring/memmap.c b/io_uring/memmap.c index 76fcc79656b00..5cf3f23e751bc 100644 --- a/io_uring/memmap.c +++ b/io_uring/memmap.c @@ -13,6 +13,7 @@ #include "memmap.h" #include "kbuf.h" #include "rsrc.h" +#include "zcrx.h" static void *io_mem_alloc_compound(struct page **pages, int nr_pages, size_t size, gfp_t gfp) @@ -258,7 +259,8 @@ static struct io_mapped_region *io_mmap_get_region(struct io_ring_ctx *ctx, loff_t pgoff) { loff_t offset = pgoff << PAGE_SHIFT; - unsigned int bgid; + unsigned int id; + switch (offset & IORING_OFF_MMAP_MASK) { case IORING_OFF_SQ_RING: @@ -267,12 +269,13 @@ static struct io_mapped_region *io_mmap_get_region(struct io_ring_ctx *ctx, case IORING_OFF_SQES: return &ctx->sq_region; case IORING_OFF_PBUF_RING: - bgid = (offset & ~IORING_OFF_MMAP_MASK) >> IORING_OFF_PBUF_SHIFT; - return io_pbuf_get_region(ctx, bgid); + id = (offset & ~IORING_OFF_MMAP_MASK) >> IORING_OFF_PBUF_SHIFT; + return io_pbuf_get_region(ctx, id); case IORING_MAP_OFF_PARAM_REGION: return &ctx->param_region; case IORING_MAP_OFF_ZCRX_REGION: - return &ctx->zcrx_region; + id = (offset & ~IORING_OFF_MMAP_MASK) >> IORING_OFF_ZCRX_SHIFT; + return io_zcrx_get_region(ctx, id); } return NULL; } |