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io_uring/kbuf: rename struct io_uring_buf_reg 'pad' to'flags' 

In preparation for allowing flags to be set for registration, rename
the padding and use it for that.

Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2023-03-14 11:01:45 -06:00
parent 25a2c188a0
commit 81cf17cd3a
2 changed files with 7 additions and 3 deletions
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2
include/uapi/linux/io_uring.h
View File

@ -640,7 +640,7 @@ struct io_uring_buf_reg {
__u64 ring_addr;
__u32 ring_entries;
__u16 bgid;
__u16 pad;
__u16 flags;
__u64 resv[3];
};

8
io_uring/kbuf.c
View File

@ -494,7 +494,9 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
if (copy_from_user(&reg, arg, sizeof(reg)))
return -EFAULT;
if (reg.pad || reg.resv[0] || reg.resv[1] || reg.resv[2])
if (reg.resv[0] || reg.resv[1] || reg.resv[2])
return -EINVAL;
if (reg.flags)
return -EINVAL;
if (!reg.ring_addr)
return -EFAULT;
@ -544,7 +546,9 @@ int io_unregister_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
if (copy_from_user(&reg, arg, sizeof(reg)))
return -EFAULT;
if (reg.pad || reg.resv[0] || reg.resv[1] || reg.resv[2])
if (reg.resv[0] || reg.resv[1] || reg.resv[2])
return -EINVAL;
if (reg.flags)
return -EINVAL;
bl = io_buffer_get_list(ctx, reg.bgid);