[06/12] fs: add FMODE_BUF_RASYNC
diff mbox series

Message ID 20200524192206.4093-7-axboe@kernel.dk
State In Next
Commit 20949bf0f7a6f5c2309ad7739f453892d3122736
Headers show
  • Add support for async buffered reads
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Commit Message

Jens Axboe May 24, 2020, 7:22 p.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 5a5434ff7543..f7b1eb765c6e 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