__cond_acquires(9)

✨ __cond_acquires(9) ✨

okay so this is a page from the Kernel API Manual (yes, that Kernel API Manual 💅) and it's about __cond_acquires — a function attribute situation, bestie. buckle up 🎀

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🌸 NAME 🌸

__cond_acquires — it's a function attribute, and what it means is that the function conditionally acquires a context lock, and it takes it exclusively 👑

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🦋 SYNOPSIS 🦋

__cond_acquires (ret , x );

like literally that's it, that's the whole vibe ✨

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💖 ARGUMENTS 💖

• ret — this is the abstract value that the function returns if the context lock got acquired. it's giving "receipt of acquisition" 🧾
• x — the context lock instance pointer. this is the actual lock bestie, the main character 🔒

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👑 DESCRIPTION 👑

so here's the tea ☕ — this is a function attribute that declares the function conditionally acquires the given context lock instance x exclusively, but — and this is the important part — it does not release it. no giving it back. not this function's job 🙅‍♀️

the function's return value ret is what tells you when the context lock is acquired. it denotes the moment, iykyk 🫶

ret may be one of:

• true
• false
• nonzero
• 0
• nonnull
• NULL

those are the only values in the club, no cap 💀

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🌈 SEE ALSO 🌈

• the Kernel file ./include/linux/compiler-context-analysis.h 📁
• __guarded_by(9)
• __pt_guarded_by(9)
• context_lock_struct(9)
• disable_context_analysis(9)
• enable_context_analysis(9)
• __no_context_analysis(9)
• context_unsafe(9)
• __context_unsafe(9)
• context_unsafe_alias(9)
• token_context_lock(9)
• token_context_lock_instance(9)
• __must_hold(9)
• __must_not_hold(9)
• __acquires(9)
• __releases(9)
• __cond_releases(9)
• __acquire(9)
• __release(9)
• __must_hold_shared(9)
• __acquires_shared(9)
• __cond_acquires_shared(9)
• __releases_shared(9)
• __acquire_shared(9)
• __release_shared(9)
• __acquire_ret(9)
• __acquire_shared_ret(9)

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that's the whole page bestie, go be iconic with your conditional exclusive acquisitions 💜

kisses from the kernel, mwah 😭💖

— sourced from ./include/linux, dated October 2026 🗓️✨ (slay, what a timestamp) 🌸🦋🎀