[05/11] fs: add FMODE_BUF_RASYNC
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Message ID 20200523015049.14808-6-axboe@kernel.dk
State Superseded
Headers show
  • Add support for async buffered reads
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Commit Message

Jens Axboe May 23, 2020, 1:50 a.m. UTC
If set, this indicates that the file system supports IOCB_WAITQ for
buffered reads.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
 include/linux/fs.h | 3 +++
 1 file changed, 3 insertions(+)

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diff --git a/include/linux/fs.h b/include/linux/fs.h
index 82b989695ab9..0ef5f5973b1c 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -175,6 +175,9 @@  typedef int (dio_iodone_t)(struct kiocb *iocb, loff_t offset,
 /* File does not contribute to nr_files count */
 #define FMODE_NOACCOUNT		((__force fmode_t)0x20000000)
+/* File supports async buffered reads */
+#define FMODE_BUF_RASYNC	((__force fmode_t)0x40000000)
  * Flag for rw_copy_check_uvector and compat_rw_copy_check_uvector
  * that indicates that they should check the contents of the iovec are