So that kiocb.ki_cookie can be defined as blk_qc_t, which will enforce
the encapsulation.
Signed-off-by: Jeffle Xu <jefflexu@xxxxxxxxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Mike Snitzer <snitzer@xxxxxxxxxx>
---
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 db026b6ec15a..fb429daaa909 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -505,7 +505,7 @@ 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 ec8f3ddf4a6a..8b14dacf618d 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -332,7 +332,7 @@ 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 ac825ad90e44..52a54ed6ffac 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
