So that kiocb.ki_cookie can be defined as blk_qc_t, which will enforce the encapsulation.
Signed-off-by: Jeffle Xu <[email protected]> Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: Mike Snitzer <[email protected]> --- include/linux/blk_types.h | 2 +- include/linux/fs.h | 2 +- include/linux/types.h | 3 +++ 3 files changed, 5 insertions(+), 2 deletions(-) diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h index 866f74261b3b..2e05244fc16d 100644 --- a/include/linux/blk_types.h +++ b/include/linux/blk_types.h @@ -532,7 +532,7 @@ static inline int op_stat_group(unsigned int op) return op_is_write(op); } -typedef unsigned int blk_qc_t; +/* Macros for blk_qc_t */ #define BLK_QC_T_NONE -1U #define BLK_QC_T_SHIFT 16 #define BLK_QC_T_INTERNAL (1U << 31) diff --git a/include/linux/fs.h b/include/linux/fs.h index fd47deea7c17..04b687150736 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -330,7 +330,7 @@ struct kiocb { u16 ki_hint; u16 ki_ioprio; /* See linux/ioprio.h */ union { - unsigned int ki_cookie; /* for ->iopoll */ + blk_qc_t ki_cookie; /* for ->iopoll */ struct wait_page_queue *ki_waitq; /* for async buffered IO */ }; diff --git a/include/linux/types.h b/include/linux/types.h index a147977602b5..da5ca7e1bea9 100644 --- a/include/linux/types.h +++ b/include/linux/types.h @@ -125,6 +125,9 @@ typedef s64 int64_t; typedef u64 sector_t; typedef u64 blkcnt_t; +/* cookie used for IO polling */ +typedef unsigned int blk_qc_t; + /* * The type of an index into the pagecache. */ -- 2.27.0 -- dm-devel mailing list [email protected] https://listman.redhat.com/mailman/listinfo/dm-devel
