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| author | Idan Horowitz <idan.horowitz@gmail.com> | 2023-04-04 14:10:50 +0300 |
|---|---|---|
| committer | Idan Horowitz <idan.horowitz@gmail.com> | 2023-04-06 20:30:03 +0300 |
| commit | 36972141667508d44b0d4e0d2d3b092f4ad404c5 (patch) | |
| tree | 3ccf8e743446d07a26249c465c0f0a02f2b6a8f4 | |
| parent | dcdcab0099dce80697c127481a60c13e4515c04c (diff) | |
| download | serenity-36972141667508d44b0d4e0d2d3b092f4ad404c5.zip | |
Kernel: Mark sys$mmap as not needing the big lock
All accesses to shared mutable data are already serialized behind the
process address space spinlock.
| -rw-r--r-- | Kernel/API/Syscall.h | 2 | ||||
| -rw-r--r-- | Kernel/Syscalls/mmap.cpp | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/Kernel/API/Syscall.h b/Kernel/API/Syscall.h index a7f134eec9..2a90d2900d 100644 --- a/Kernel/API/Syscall.h +++ b/Kernel/API/Syscall.h @@ -125,7 +125,7 @@ enum class NeedsBigProcessLock { S(map_time_page, NeedsBigProcessLock::No) \ S(mkdir, NeedsBigProcessLock::No) \ S(mknod, NeedsBigProcessLock::No) \ - S(mmap, NeedsBigProcessLock::Yes) \ + S(mmap, NeedsBigProcessLock::No) \ S(mount, NeedsBigProcessLock::Yes) \ S(mprotect, NeedsBigProcessLock::Yes) \ S(mremap, NeedsBigProcessLock::Yes) \ diff --git a/Kernel/Syscalls/mmap.cpp b/Kernel/Syscalls/mmap.cpp index 8006b7f9d0..f55cbc5ecc 100644 --- a/Kernel/Syscalls/mmap.cpp +++ b/Kernel/Syscalls/mmap.cpp @@ -125,7 +125,7 @@ ErrorOr<void> Process::validate_inode_mmap_prot(int prot, bool readable_descript ErrorOr<FlatPtr> Process::sys$mmap(Userspace<Syscall::SC_mmap_params const*> user_params) { - VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this); + VERIFY_NO_PROCESS_BIG_LOCK(this); TRY(require_promise(Pledge::stdio)); auto params = TRY(copy_typed_from_user(user_params)); |