Symbol: ext4_collapse_range
fs/ext4/extents.c
4689
static int ext4_collapse_range(struct file *file, loff_t offset, loff_t len);
fs/ext4/extents.c
4907
ret = ext4_collapse_range(file, offset, len);
include/trace/events/ext4.h
2444
TRACE_EVENT(ext4_collapse_range,