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io_uring/kbuf: drop extra vars in io_register_pbuf_ring 

bl and free_bl variables in io_register_pbuf_ring() always point to the
same list since we started to reallocate the pre-existent list. Drop
free_bl.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/d45c3342d74c9030f99376c777a4b3d59089074d.1747150490.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
pull/1250/head
Pavel Begunkov 2025-05-13 18:26:48 +01:00 committed by Jens Axboe
parent 1724849072
commit 4e9fda29d6
1 changed files with 3 additions and 3 deletions
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6
io_uring/kbuf.c
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@ -591,7 +591,7 @@ err:
int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
{
struct io_uring_buf_reg reg;
struct io_buffer_list *bl, *free_bl = NULL;
struct io_buffer_list *bl;
struct io_uring_region_desc rd;
struct io_uring_buf_ring *br;
unsigned long mmap_offset;
@ -620,7 +620,7 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
io_destroy_bl(ctx, bl);
}
free_bl = bl = kzalloc(sizeof(*bl), GFP_KERNEL_ACCOUNT);
bl = kzalloc(sizeof(*bl), GFP_KERNEL_ACCOUNT);
if (!bl)
return -ENOMEM;
@ -665,7 +665,7 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
return 0;
fail:
io_free_region(ctx, &bl->region);
kfree(free_bl);
kfree(bl);
return ret;
}