Commit 0127251c authored by Jens Axboe's avatar Jens Axboe
Browse files

ext4: add support for passing in write hints for buffered writes 



Reviewed-by: default avatarAndreas Dilger <adilger@dilger.ca>
Reviewed-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 8e8f9298

fs/ext4/page-io.c

+2 −0
Original line number Diff line number Diff line
@@ -350,6 +350,7 @@ void ext4_io_submit(struct ext4_io_submit *io) 
	if (bio) {

		int io_op_flags = io->io_wbc->sync_mode == WB_SYNC_ALL ?

				  REQ_SYNC : 0;

		io->io_bio->bi_write_hint = io->io_end->inode->i_write_hint;

		bio_set_op_attrs(io->io_bio, REQ_OP_WRITE, io_op_flags);

		submit_bio(io->io_bio);

	}
@@ -397,6 +398,7 @@ submit_and_retry: 
		ret = io_submit_init_bio(io, bh);

		if (ret)

			return ret;

		io->io_bio->bi_write_hint = inode->i_write_hint;

	}

	ret = bio_add_page(io->io_bio, page, bh->b_size, bh_offset(bh));

	if (ret != bh->b_size)

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