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authorTejun Heo <tj@kernel.org>2019-06-27 23:39:48 +0300
committerJens Axboe <axboe@kernel.dk>2019-07-10 18:00:57 +0300
commit9b0eb69b75bccada2d341d7e7ca342f0cb1c9a6a (patch)
treefe6f801bf144743a3f9ac9c336602f855d35ac45 /fs/fs-writeback.c
parentfd112c74652371a023f85d87b70bee7169e8f4d0 (diff)
downloadlinux-9b0eb69b75bccada2d341d7e7ca342f0cb1c9a6a.tar.xz
cgroup, blkcg: Prepare some symbols for module and !CONFIG_CGROUP usages
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. 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>
Diffstat (limited to 'fs/fs-writeback.c')
-rw-r--r--fs/fs-writeback.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 9ebfb1b28430..a8a40bc26c2f 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -270,6 +270,7 @@ 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
@@ -582,6 +583,7 @@ void wbc_attach_and_unlock_inode(struct writeback_control *wbc,
if (unlikely(wb_dying(wbc->wb)))
inode_switch_wbs(inode, wbc->wb_id);
}
+EXPORT_SYMBOL_GPL(wbc_attach_and_unlock_inode);
/**
* wbc_detach_inode - disassociate wbc from inode and perform foreign detection
@@ -701,6 +703,7 @@ void wbc_detach_inode(struct writeback_control *wbc)
wb_put(wbc->wb);
wbc->wb = NULL;
}
+EXPORT_SYMBOL_GPL(wbc_detach_inode);
/**
* wbc_account_io - account IO issued during writeback