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authorTejun Heo <tj@kernel.org>2015-07-23 14:27:09 -0400
committerJens Axboe <axboe@fb.com>2015-07-23 13:36:44 -0600
commit5aa2a96b34073fb775917fbc7d5578a04164b9f7 (patch)
tree6fb44815a7eedf80da999779dc6be7d1eb65e6a9
parent5f6c2d2b7dbb541c1e922538c49fa04c494ae3d7 (diff)
downloadlinux-5aa2a96b34073fb775917fbc7d5578a04164b9f7.tar.bz2
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: Tejun Heo <tj@kernel.org> Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jens Axboe <axboe@fb.com>
-rw-r--r--block/bio.c2
-rw-r--r--fs/fs-writeback.c1
2 files changed, 3 insertions, 0 deletions
diff --git a/block/bio.c b/block/bio.c
index 2a00d349cd68..b671a0ff731c 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -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()
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index f0520bcf2094..518c6294bf6c 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -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