Unverified Commit ddf9e2ff authored by Amir Goldstein's avatar Amir Goldstein Committed by Christian Brauner
Browse files

fs: export mnt_{get,put}_write_access() to modules 



Overlayfs is going to use those to get write access on the upper mount
during entire copy up without taking freeze protection on upper sb for
the entire copy up.

Signed-off-by: default avatarAmir Goldstein <amir73il@gmail.com>
Message-Id: <20230908132900.2983519-3-amir73il@gmail.com>
Signed-off-by: default avatarChristian Brauner <brauner@kernel.org>
parent 3e15dcf7

fs/namespace.c

+2 −0
Original line number Diff line number Diff line
@@ -386,6 +386,7 @@ int mnt_get_write_access(struct vfsmount *m) 


	return ret;

}

EXPORT_SYMBOL_GPL(mnt_get_write_access);



/**

 * mnt_want_write - get write access to a mount
@@ -466,6 +467,7 @@ void mnt_put_write_access(struct vfsmount *mnt) 
	mnt_dec_writers(real_mount(mnt));

	preempt_enable();

}

EXPORT_SYMBOL_GPL(mnt_put_write_access);



/**

 * mnt_drop_write - give up write access to a mount