[PATCH 3/7] direct-io: add support for write stream IDs

Jens Axboe
2015-05-05T20:03:15Z

Get the streamid from the file, if any, and set it on the bio.

Signed-off-by: Jens Axboe <axboe@fb.com>
---
fs/direct-io.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/fs/direct-io.c b/fs/direct-io.c
index 745d2342651a..9acd6724889d 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -76,6 +76,7 @@ struct dio_submit {
int reap_counter; /* rate limit reaping */
sector_t final_block_in_request;/* doesn't change */
int boundary; /* prev block is at a boundary */
+ int streamid; /* Write stream ID */
get_block_t *get_block; /* block mapping function */
dio_submit_t *submit_io; /* IO submition function */

@@ -373,6 +374,8 @@ dio_bio_alloc(struct dio *dio, struct dio_submit *sdio,

sdio->bio = bio;
sdio->logical_offset_in_bio = sdio->cur_page_fs_offset;
+
+ bio_set_streamid(bio, sdio->streamid);
}

/*
@@ -1204,6 +1207,7 @@ do_blockdev_direct_IO(struct kiocb *iocb, struct inode *inode,
sdio.blkbits = blkbits;
sdio.blkfactor = i_blkbits - blkbits;
sdio.block_in_file = offset >> blkbits;
+ sdio.streamid = file_streamid(iocb->ki_filp);

sdio.get_block = get_block;
dio->end_io = end_io;
--
2.4.0.rc2.1.g3d6bc9a