vfs_readv 1034 fs/read_write.c ret = vfs_readv(f.file, vec, vlen, ppos, flags); vfs_readv 1089 fs/read_write.c ret = vfs_readv(f.file, vec, vlen, &pos, flags); vfs_readv 359 fs/splice.c res = vfs_readv(file, (const struct iovec __user *)vec, vlen, &pos, 0); vfs_readv 1919 include/linux/fs.h extern ssize_t vfs_readv(struct file *, const struct iovec __user *,