opinfo_write_to_read(9)

💅 opinfo_write_to_read(9) — Kernel API Manual 🦋

okay so bestie, welcome to opinfo_write_to_read(9) — a lil page from the Kernel API Manual, section 9, and honestly? it's giving "tiny function, big responsibilities" ✨

---

🌸 NAME 🌸

opinfo_write_to_read — convert a write oplock to read oplock. that's it. that's the whole job. glow-up for locks fr fr 💅

---

✨ SYNOPSIS ✨

int opinfo_write_to_read (struct oplock_info *opinfo );

like, it takes one pointer and hands you back an int. simple queen behavior 👑

---

🎀 ARGUMENTS 🎀

• opinfo — current oplock info. yes bestie, current — this is the info you're working on right now, not some ex-oplock, we don't do that here 🙈

---

💖 RETURN 💖

• 0 on success 🎉
• otherwise -EINVAL 😭 (so like, not success, and specifically that error — no cap)

---

🦋 SEE ALSO 🦋

okay this is the part where the page just like. introduces you to the entire friend group. buckle up 💀

• alloc_opinfo(9)
• opinfo_read_handle_to_read(9)
• opinfo_write_to_none(9)
• opinfo_read_to_none(9)
• lease_read_to_write(9)
• lease_none_upgrade(9)
• close_id_del_oplock(9)
• grant_write_oplock(9)
• grant_read_oplock(9)
• grant_none_oplock(9)
• same_client_has_lease(9)
• __smb2_oplock_break_noti(9)
• smb2_oplock_break_noti(9)
• __smb2_lease_break_noti(9)
• smb2_lease_break_noti(9)
• smb_grant_oplock(9)
• smb_break_all_write_oplock(9)
• __smb_break_all_levII_oplock(9)
• smb_break_all_oplock(9)
• smb2_map_lease_to_oplock(9)
• create_lease_buf(9)
• parse_lease_state(9)
• smb2_find_context_vals(9)
• create_durable_rsp_buf(9)
• create_durable_v2_rsp_buf(9)
• create_mxac_rsp_buf(9)
• create_posix_rsp_buf(9)
• create_aapl_rsp_buf(9)
• lookup_lease_in_table(9)

and these all live in the kernel file ./fs/smb/server/oplock.c — that's the address bestie, write it down 🖊️💖

---

🌈 iykyk: this whole squad is deep SMB server oplock lore. if you already know, you already know. and if you don't… bestie, see also the see also 😭🫶

---

okay that's the page!! sourced from the legendary ./fs/smb/server directory, dated October 2026, and it's literally called opinfo_write_to_read(9) — slay, periodt, go convert that write oplock 💅🎀✨