quota: provide interface for readding allocated space into reserved space

[~andy/linux] / fs / stat.c

diff --git a/fs/stat.c b/fs/stat.c
index 04ce1ac20d20b393d13bdfcd0e24c8ca4cde743e..d0ea7ef75e264ef2cccf2c100d4e3a8c7393121c 100644 (file)
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -447,9 +447,8 @@ void inode_add_bytes(struct inode *inode, loff_t bytes)
 
 EXPORT_SYMBOL(inode_add_bytes);
 
-void inode_sub_bytes(struct inode *inode, loff_t bytes)
+void __inode_sub_bytes(struct inode *inode, loff_t bytes)
 {
-       spin_lock(&inode->i_lock);
        inode->i_blocks -= bytes >> 9;
        bytes &= 511;
        if (inode->i_bytes < bytes) {
@@ -457,6 +456,14 @@ void inode_sub_bytes(struct inode *inode, loff_t bytes)
                inode->i_bytes += 512;
        }
        inode->i_bytes -= bytes;
+}
+
+EXPORT_SYMBOL(__inode_sub_bytes);
+
+void inode_sub_bytes(struct inode *inode, loff_t bytes)
+{
+       spin_lock(&inode->i_lock);
+       __inode_sub_bytes(inode, bytes);
        spin_unlock(&inode->i_lock);
 }