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| author | wangyangbo <wangyangbo@uniontech.com> | 2021-08-19 13:56:57 +0800 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-23 13:10:46 -0600 |
| commit | 187f08c12cd1d81f000cdc9c0119ef6e0a6f47e3 (patch) | |
| tree | 5e36e9fc07d1f38f362fe90f22b0018d461e2c0a /fs/io_uring.c | |
| parent | e98e49b2bbf777f91732dc916d7ad33876c663c9 (diff) | |
| download | lwn-187f08c12cd1d81f000cdc9c0119ef6e0a6f47e3.tar.gz lwn-187f08c12cd1d81f000cdc9c0119ef6e0a6f47e3.zip | |
io_uring: Add register support for non-4k PAGE_SIZE
Now allocated rsrc table uses PAGE_SIZE as the size of 2nd-level, and
accessing this table relies on each level index from fixed TABLE_SHIFT
(12 - 3) in 4k page case. In order to correctly work in non-4k page,
define TABLE_SHIFT as non-fixed (PAGE_SHIFT - shift of data) for
2nd-level table entry number.
Signed-off-by: wangyangbo <wangyangbo@uniontech.com>
Link: https://lore.kernel.org/r/20210819055657.27327-1-wangyangbo@uniontech.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'fs/io_uring.c')
| -rw-r--r-- | fs/io_uring.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 9107cd78863d..5d3df4f913a8 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -92,12 +92,12 @@ #define IORING_MAX_CQ_ENTRIES (2 * IORING_MAX_ENTRIES) #define IORING_SQPOLL_CAP_ENTRIES_VALUE 8 -/* 512 entries per page on 64-bit archs, 64 pages max */ +/* only define max */ #define IORING_MAX_FIXED_FILES (1U << 15) #define IORING_MAX_RESTRICTIONS (IORING_RESTRICTION_LAST + \ IORING_REGISTER_LAST + IORING_OP_LAST) -#define IO_RSRC_TAG_TABLE_SHIFT 9 +#define IO_RSRC_TAG_TABLE_SHIFT (PAGE_SHIFT - 3) #define IO_RSRC_TAG_TABLE_MAX (1U << IO_RSRC_TAG_TABLE_SHIFT) #define IO_RSRC_TAG_TABLE_MASK (IO_RSRC_TAG_TABLE_MAX - 1) |