fs/quota: add kernel_quotactl() helper; remove in-kernel call to syscall
Using the fs-internal kernel_quotactl() helper allows us to get rid of
the fs-internal call to the sys_quotactl() syscall.
This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
diff --git a/include/linux/quotaops.h b/include/linux/quotaops.h
index 2fb6fb1..dc905a4 100644
--- a/include/linux/quotaops.h
+++ b/include/linux/quotaops.h
@@ -27,6 +27,9 @@ static inline bool is_quota_modification(struct inode *inode, struct iattr *ia)
(ia->ia_valid & ATTR_GID && !gid_eq(ia->ia_gid, inode->i_gid));
}
+int kernel_quotactl(unsigned int cmd, const char __user *special,
+ qid_t id, void __user *addr);
+
#if defined(CONFIG_QUOTA)
#define quota_error(sb, fmt, args...) \