xfs: add support for passing in write hints for buffered writes

Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 76b6f988e2fa969103b8e986b1861ab41585867f..81f5bf7f0e72ea2fc4fa40d20cbe6e5000b5df07 100644 (file)
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -506,6 +506,7 @@ xfs_submit_ioend(
                return status;
        }
 
+       ioend->io_bio->bi_write_hint = ioend->io_inode->i_write_hint;
        submit_bio(ioend->io_bio);
        return 0;
 }
@@ -565,6 +566,7 @@ xfs_chain_bio(
        bio_chain(ioend->io_bio, new);
        bio_get(ioend->io_bio);         /* for xfs_destroy_ioend */
        ioend->io_bio->bi_opf = REQ_OP_WRITE | wbc_to_write_flags(wbc);
+       ioend->io_bio->bi_write_hint = ioend->io_inode->i_write_hint;
        submit_bio(ioend->io_bio);
        ioend->io_bio = new;
 }