grant_read_oplock(9)

✨ grant_read_oplock(9) ✨

okay so bestie, welcome to the Kernel API Manual — yes, we're doing kernel internals today, and honestly? it's giving main character energy. this one's called grant_read_oplock and it does exactly what it says on the tin: it hands out a level2 oplock</> or a read lease</>. that's it. that's the whole vibe. 🎀

---

🌸 NAME 🌸

grant_read_oplock — grant level2 oplock or read lease. literally just that, no cap 💅

---

🦋 SYNOPSIS 🦋

void grant_read_oplock (struct oplock_info *opinfo_new , struct
       lease_ctx_info *lctx );

so it's a void function (meaning it hands nothing back to you, it's not that kind of girl) and she takes two args. slay.

---

💖 ARGUMENTS 💖

• opinfo_new — the brand-new oplock info object 🫶 like, the fresh little guy you're about to bless.
• lctx — the lease context information ✨ all the deets she needs to know.

---

🌈 RETURN 🌈

0

yep. that's the whole return section. iconic behaviour honestly 😭

---

🔥 SEE ALSO 🔥

okay this part is a whole friend group, buckle up:

Kernel file ./fs/smb/server/oplock.c, plus all of these besties:

• alloc_opinfo(9)
• opinfo_write_to_read(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_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)

go read them. iykyk 📚💜

---

and that's a wrap, bestie 🧚 this lil page lives at ./fs/smb/server and it's dated October 2026 — go off, grant_read_oplock(9), you ate 💅👑