ext4_collapse_range 3316 fs/ext4/ext4.h extern int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len);
ext4_collapse_range 4903 fs/ext4/extents.c 		return ext4_collapse_range(inode, offset, len);
ext4_collapse_range 2477 include/trace/events/ext4.h TRACE_EVENT(ext4_collapse_range,