Commit 5aa2a96b authored by Tejun Heo's avatar Tejun Heo Committed by Jens Axboe
Browse files

block: export bio_associate_*() and wbc_account_io() 



bio_associate_blkcg(), bio_associate_current() and wbc_account_io()
are used to implement cgroup writeback support for filesystems and
thus need to be exported.  Export them.

Signed-off-by: default avatarTejun Heo <tj@kernel.org>
Reported-by: default avatarStephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 5f6c2d2b

block/bio.c

+2 −0
Original line number Diff line number Diff line
@@ -2009,6 +2009,7 @@ int bio_associate_blkcg(struct bio *bio, struct cgroup_subsys_state *blkcg_css) 
	bio->bi_css = blkcg_css;

	return 0;

}

EXPORT_SYMBOL_GPL(bio_associate_blkcg);



/**

 * bio_associate_current - associate a bio with %current
@@ -2039,6 +2040,7 @@ int bio_associate_current(struct bio *bio) 
	bio->bi_css = task_get_css(current, blkio_cgrp_id);

	return 0;

}

EXPORT_SYMBOL_GPL(bio_associate_current);



/**

 * bio_disassociate_task - undo bio_associate_current()

fs/fs-writeback.c

+1 −0
Original line number Diff line number Diff line
@@ -702,6 +702,7 @@ void wbc_account_io(struct writeback_control *wbc, struct page *page, 
	else

		wbc->wb_tcand_bytes -= min(bytes, wbc->wb_tcand_bytes);

}

EXPORT_SYMBOL_GPL(wbc_account_io);



/**

 * inode_congested - test whether an inode is congested

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