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authorJens Axboe <axboe@kernel.dk>2020-05-22 09:12:51 -0600
committerJens Axboe <axboe@kernel.dk>2020-05-23 08:26:31 -0600
commita2b740dda6ed730c60665df73d30bcfc4ae4f0a4 (patch)
tree9aef0b221f67737ec1512b9bc91f392023c32972
parent12b9e99ac7b8d5e7956785b66c86b18f439c0308 (diff)
fs: add FMODE_BUF_RASYNC
If set, this indicates that the file system supports IOCB_WAITQ for buffered reads. Signed-off-by: Jens Axboe <axboe@kernel.dk>
-rw-r--r--include/linux/fs.h3
1 files changed, 3 insertions, 0 deletions
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