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| author | Tejun Heo <tj@kernel.org> | 2019-06-27 13:39:48 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-06-20 10:25:01 +0200 |
| commit | fd711ead4ff131295209c2dd45c9a0085ac8289a (patch) | |
| tree | 6e64601e7bafd823792b6bc303db9dcf9a21c695 | |
| parent | 01eb3bd80889a5ebfd2e770c1d600bed50a03af8 (diff) | |
| download | linux-stable-fd711ead4ff131295209c2dd45c9a0085ac8289a.tar.gz linux-stable-fd711ead4ff131295209c2dd45c9a0085ac8289a.tar.bz2 linux-stable-fd711ead4ff131295209c2dd45c9a0085ac8289a.zip | |
cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
commit 9b0eb69b75bccada2d341d7e7ca342f0cb1c9a6a upstream.
btrfs is going to use css_put() and wbc helpers to improve cgroup
writeback support. Add dummy css_get() definition and export wbc
helpers to prepare for module and !CONFIG_CGROUP builds.
[only backport the export of __inode_attach_wb for stable kernels - gregkh]
Reported-by: kbuild test robot <lkp@intel.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/fs-writeback.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index 6398bd8a066e..fe907ff91eeb 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -269,6 +269,7 @@ void __inode_attach_wb(struct inode *inode, struct page *page) if (unlikely(cmpxchg(&inode->i_wb, NULL, wb))) wb_put(wb); } +EXPORT_SYMBOL_GPL(__inode_attach_wb); /** * locked_inode_to_wb_and_lock_list - determine a locked inode's wb and lock it |