lease_read_to_write(9)

💖 lease_read_to_write(9) 💖

okay bestie, welcome to the Kernel API Manual ✨ this one's a little function from the kernel side of things, and it's lowkey a glow-up story. We're taking a lease and upgrading it — read to write, main character energy only 💅

🎀 NAME 🎀

lease_read_to_write — upgrade lease state from read to write. That's it, that's the whole vibe. She takes a read lease and gives it a whole new wardrobe 🔥

✨ SYNOPSIS ✨

int lease_read_to_write (struct oplock_info *opinfo );

(yes, the space before that last ) is canon, don't come for her 🙈)

🦋 ARGUMENTS 🦋

• opinfo — the current lease info. Like, the lease you're holding right now, the one that's about to get upgraded. She's the subject of the makeover 🫶

🌸 RETURN 🌸

0 on success, otherwise -EINVAL. Periodt. If you get 0 you ate 💖 if you get -EINVAL... something about it was not it, and the kernel is telling you so 😭

🌈 SEE ALSO 🌈

okay so this is the extended friend group, and we're not leaving a single one out 🫶 here's the whole group chat:

Kernel file ./fs/smb/server/oplock.c, plus:

• 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_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)

ngl bestie, read the whole list before you go poking at lease states — the upgrade only makes sense in context, iykyk 💀

okay bye ily, this page came straight out of ./fs/smb/server and it's dated October 2026 🎀 go forth and upgrade responsibly ✨💜