1name: f2fs_write_begin 2ID: 302 3format: 4 field:unsigned short common_type; offset:0; size:2; signed:0; 5 field:unsigned char common_flags; offset:2; size:1; signed:0; 6 field:unsigned char common_preempt_count; offset:3; size:1; signed:0; 7 field:int common_pid; offset:4; size:4; signed:1; 8 9 field:dev_t dev; offset:8; size:4; signed:0; 10 field:ino_t ino; offset:16; size:8; signed:0; 11 field:loff_t pos; offset:24; size:8; signed:1; 12 field:unsigned int len; offset:32; size:4; signed:0; 13 field:unsigned int flags; offset:36; size:4; signed:0; 14 15print fmt: "dev = (%d,%d), ino %lu, pos %lld, len %u, flags %u", ((unsigned int) ((REC->dev) >> 20)), ((unsigned int) ((REC->dev) & ((1U << 20) - 1))), (unsigned long) REC->ino, REC->pos, REC->len, REC->flags 16