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path: root/include/linux/bit_spinlock.h
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2023-04-26A small compile fixMikulas Patocka
Hi Here I'm sending a small compile fix for bcachefs-tools. Without this patch, I get this error: cargo build --release --manifest-path rust-src/Cargo.toml Compiling bch_bindgen v0.1.0 (/usr/src/git/bcachefs-tools/rust-src/bch_bindgen) error: failed to run custom build command for `bch_bindgen v0.1.0 (/usr/src/git/bcachefs-tools/rust-src/bch_bindgen)` Caused by: process didn't exit successfully: `/usr/src/git/bcachefs-tools/rust-src/target/release/build/bch_bindgen-733e88995ce9eab7/build-script-build` (exit status: 101) --- stderr warning: optimization flag '-fkeep-inline-functions' is not supported [-Wignored-optimization-argument] ../../include/linux/bit_spinlock.h:20:3: error: call to undeclared function 'futex'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ../../include/linux/bit_spinlock.h:28:2: error: call to undeclared function 'futex'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] ../../include/linux/bit_spinlock.h:39:2: error: call to undeclared function 'futex'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] The futex() function is declared in /usr/include/x86_64-linux-gnu/urcu/futex.h It is not declared in linux/futex.h, so we need to include urcu/futex.h Mikulas Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
2021-04-26bit_spinlocks now use futexesKent Overstreet
Spinlocks aren't a good idea in userspace, where we can't actually disable preemption. Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
2017-01-20bcache in userspace; userspace fsckKent Overstreet