Add a new fsync opcode, which either syncs a range if one is passed, or the whole file if the offset and length fields are both cleared to zero. A flag is provided to use fdatasync semantics, that is only force out metadata which is required to retrieve the file data, but not others like metadata.
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| @@ -24,7 +24,7 @@ struct io_uring_sqe { · 23 unmodified lines | |||
| 24 | __u32 len; /* buffer size or number of iovecs */ | 24 | __u32 len; /* buffer size or number of iovecs */ |
| 25 | union { | 25 | union { |
| 26 | __kernel_rwf_t rw_flags; | 26 | __kernel_rwf_t rw_flags; |
| 27 | __u32 __resv; | 27 | __u32 fsync_flags; |
| 28 | }; | 28 | }; |
| 29 | __u64 user_data; /* data to be passed back at completion time */ | 29 | __u64 user_data; /* data to be passed back at completion time */ |
| 30 | __u64 __pad2[3]; | 30 | __u64 __pad2[3]; |
| @@ -33,6 +33,12 @@ struct io_uring_sqe { · 2 unmodified lines | |||
| 33 | #define IORING_OP_NOP 0 | 33 | #define IORING_OP_NOP 0 |
| 34 | #define IORING_OP_READV 1 | 34 | #define IORING_OP_READV 1 |
| 35 | #define IORING_OP_WRITEV 2 | 35 | #define IORING_OP_WRITEV 2 |
| 36 | #define IORING_OP_FSYNC 3 | ||
| 37 | |||
| 38 | /* | ||
| 39 | * sqe->fsync_flags | ||
| 40 | */ | ||
| 41 | #define IORING_FSYNC_DATASYNC (1U << 0) | ||
| 36 | 42 | ||
| 37 | /* | 43 | /* |
| 38 | * IO completion data structure (Completion Queue Entry) | 44 | * IO completion data structure (Completion Queue Entry) |