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Kernel: Switch process file descriptor table from spinlock to mutex

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There's no reason for this to use a spinlock. Instead, let's allow
threads to block if someone else is using the descriptor table.
This commit is contained in:
Andreas Kling 2022-01-29 01:29:07 +01:00
parent 8ebec2938c
commit b56646e293
Notes: sideshowbarker 2024-07-17 20:03:36 +09:00
16 changed files with 37 additions and 37 deletions
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2
Kernel/Syscalls/dup2.cpp
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@ -13,7 +13,7 @@ ErrorOr<FlatPtr> Process::sys$dup2(int old_fd, int new_fd)
{
VERIFY_PROCESS_BIG_LOCK_ACQUIRED(this);
TRY(require_promise(Pledge::stdio));
return m_fds.with([&](auto& fds) -> ErrorOr<FlatPtr> {
return m_fds.with_exclusive([&](auto& fds) -> ErrorOr<FlatPtr> {
auto description = TRY(fds.open_file_description(old_fd));
if (old_fd == new_fd)
return new_fd;