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Kernel: Mark sys$set_mmap_name as not needing the big lock

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All accesses to shared mutable data are already serialized behind the
process address space spinlock.
This commit is contained in:
Idan Horowitz 2023-04-04 14:13:41 +03:00
parent 2f79d0e8b9
commit d1082a00b7
2 changed files with 2 additions and 2 deletions
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2
Kernel/API/Syscall.h
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@ -157,7 +157,7 @@ enum class NeedsBigProcessLock {
S(scheduler_set_parameters, NeedsBigProcessLock::No) \ S(scheduler_set_parameters, NeedsBigProcessLock::No) \
S(sendfd, NeedsBigProcessLock::No) \ S(sendfd, NeedsBigProcessLock::No) \
S(sendmsg, NeedsBigProcessLock::Yes) \ S(sendmsg, NeedsBigProcessLock::Yes) \
S(set_mmap_name, NeedsBigProcessLock::Yes) \ S(set_mmap_name, NeedsBigProcessLock::No) \
S(set_thread_name, NeedsBigProcessLock::No) \ S(set_thread_name, NeedsBigProcessLock::No) \
S(setegid, NeedsBigProcessLock::No) \ S(setegid, NeedsBigProcessLock::No) \
S(seteuid, NeedsBigProcessLock::No) \ S(seteuid, NeedsBigProcessLock::No) \

2
Kernel/Syscalls/mmap.cpp
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@ -441,7 +441,7 @@ ErrorOr<FlatPtr> Process::sys$madvise(Userspace<void*> address, size_t size, int
ErrorOr<FlatPtr> Process::sys$set_mmap_name(Userspace<Syscall::SC_set_mmap_name_params const*> user_params) ErrorOr<FlatPtr> Process::sys$set_mmap_name(Userspace<Syscall::SC_set_mmap_name_params const*> user_params)
{ {
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this); VERIFY_NO_PROCESS_BIG_LOCK(this);
TRY(require_promise(Pledge::stdio)); TRY(require_promise(Pledge::stdio));
auto params = TRY(copy_typed_from_user(user_params)); auto params = TRY(copy_typed_from_user(user_params));