ext4_mb_return_to_preallocation 4609 fs/ext4/mballoc.c 		ext4_mb_return_to_preallocation(inode, &e4b, block, count);
ext4_mb_return_to_preallocation  266 fs/ext4/mballoc.h static void ext4_mb_return_to_preallocation(struct inode *inode,