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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
io_uring/kbuf: remove obsolete buf_nr_pages and update comments
The buf_nr_pages field in io_buffer_list was previously used to
determine whether the buffer list uses ring-provided buffers or classic
provided buffers. This is now determined by checking the IOBL_BUF_RING
flag.
Remove the buf_nr_pages field and update related comments.
Signed-off-by: Joanne Koong <joannelkoong@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
authored by
Joanne Koong
and committed by
Jens Axboe
84692a15
f779ac0b
+4
-5
+2
-2
include/linux/io_uring_types.h
+2
-2
include/linux/io_uring_types.h
···
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/*
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* Modifications are protected by ->uring_lock and ->mmap_lock.
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-
* The flags, buf_pages and buf_nr_pages fields should be stable
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-
* once published.
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+
* The buffer list's io mapped region should be stable once
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+
* published.
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*/
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struct xarray io_bl_xa;
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+2
-3
io_uring/kbuf.h
+2
-3
io_uring/kbuf.h
···
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struct io_buffer_list {
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/*
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-
* If ->buf_nr_pages is set, then buf_pages/buf_ring are used. If not,
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-
* then these are classic provided buffers and ->buf_list is used.
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+
* If the IOBL_BUF_RING flag is set, then buf_ring is used. If not, then
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+
* these are classic provided buffers and ->buf_list is used.
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*/
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union {
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struct list_head buf_list;
···
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__u16 bgid;
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/* below is for ring provided buffers */
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-
__u16 buf_nr_pages;
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__u16 nr_entries;
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__u16 head;
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__u16 mask;