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opnsense-src/sys/compat/linux
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Andrew Gallatin 13a5a46c49 Fix new users of MAXPHYS and hide it from the kernel namespace 
In cd85379104, kib made maxphys a load-time tunable.  This made
the #define MAXPHYS in sys/param.h  almost entirely obsolete, as
it could now be overridden by kern.maxphys at boot time, or by
opt_maxphys.h.

However, decades of tradition have led to several new, incorrect, uses
of MAXPHYS in other parts of the kernel, mostly by seasoned
developers.  I've corrected those uses here in a mechanical fashion,
and verified that it fixes a bug in the md driver that I was
experiencing.

Since using MAXPHYS is such an easy mistake to make, it is best to
hide it from the kernel namespace.  So I've moved its definition to
_maxphys.h, which is now included in param.h only for userspace.

That brings up the fact that lots of userspace programs use MAXPHYS
for different reasons, most of them probably wrong.  Userspace consumers
that really need to know the value of maxphys should probably be
changed to use the kern.maxphys sysctl.  But that's outside the scope
of this change.

Reviewed by: imp, jkim, kib, markj
Fixes: 30038a8b4e ("md: Get rid of the pbuf zone")
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D44986
2024-04-30 15:29:06 -04:00
..
check_error.d sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
check_internal_locks.d sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux.c linux: use sa_family_t for address family conversions 2024-03-29 13:35:37 -07:00
linux.h linux(4): Update my copyrights, add SPDX tag 2023-08-17 23:54:36 +03:00
linux_common.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_common.h linux: use sa_family_t for address family conversions 2024-03-29 13:35:37 -07:00
linux_dtrace.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_dummy.c linux(4): Update syscalls.master to 6.5 2023-09-25 12:24:58 +03:00
linux_elf.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_elf.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
linux_elf32.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_elf64.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_emul.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_emul.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_errno.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_errno.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_errno.inc sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_event.c linux(4): Convert flags in timerfd_create 2023-09-05 11:53:02 +03:00
linux_event.h linux(4): Convert flags in timerfd_create 2023-09-05 11:53:02 +03:00
linux_file.c Abstract UIO allocation and deallocation. 2024-02-10 11:38:04 -05:00
linux_file.h linux(4): Add a write syscall wrapper 2023-08-20 10:36:29 +03:00
linux_fork.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_fork.h linux(4): Update my copyrights, add SPDX tag 2023-08-17 23:54:36 +03:00
linux_futex.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_futex.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_getcwd.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_ioctl.c linux: Check for copyout errors in ioctl handlers 2023-12-27 10:13:15 -05:00
linux_ioctl.h linux(4): Add 2 Linux socket ioctl commands 2023-08-17 22:57:16 +03:00
linux_ipc.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_ipc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_ipc64.h linux(4): Fix semid64_ds structure layout 2023-10-04 21:21:12 +03:00
linux_mib.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_mib.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_misc.c sys/compat/linux/linux_misc.c: remove an extra semicolon 2024-02-02 18:35:01 -07:00
linux_misc.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_mmap.c Reduce reliance on sys/sysproto.h pollution 2024-04-15 21:35:40 +01:00
linux_mmap.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_netlink.c linux: make linux_netlink_p->msg_from_linux be able to fail 2024-03-29 13:35:51 -07:00
linux_persona.h linux(4): Fix leftovers after 2ff63af9 2023-08-17 23:54:00 +03:00
linux_ptrace.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_rseq.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_siginfo.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_signal.c linux(4): On Linux SIGKILL can not be reset to default 2023-09-18 17:53:01 +03:00
linux_signal.h linux(4): Staticize lsiginfo_to_siginfo 2023-09-18 17:52:43 +03:00
linux_socket.c Fix new users of MAXPHYS and hide it from the kernel namespace 2024-04-30 15:29:06 -04:00
linux_socket.h linux(4): Drop bogus __arm__ condition due to lack of 32-bit arm support 2023-08-17 22:57:17 +03:00
linux_stats.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_sysctl.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_time.c sys: Remove $FreeBSD$: one-line .c pattern 2023-08-16 11:54:36 -06:00
linux_time.h sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
linux_timer.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_uid16.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_util.c linux_pwd_onexec: do not abort image activation if emul path does not exist 2024-02-22 03:31:39 +02:00
linux_util.h Reduce reliance on sys/sysproto.h pollution 2024-04-15 21:35:40 +01:00
linux_vdso.c linux(4): Remove sys/cdefs.h inclusion where it's not needed due to 685dc743 2023-08-18 13:12:02 +03:00
linux_vdso.h linux(4): Remove include of sys/types.h from linux_vdso.h 2023-08-18 15:58:32 +03:00
linux_vdso_gtod.inc linux(4): Fix linker warning about undefined vdso symbols 2023-08-20 00:48:36 +03:00
linux_videodev2_compat.h linux(4): Fix leftovers after 2ff63af9 2023-08-17 23:54:00 +03:00
linux_videodev_compat.h linux(4): Fix leftovers after 2ff63af9 2023-08-17 23:54:00 +03:00
linux_xattr.c linux(4): Return ENOTSUP from listxattr instead of EPERM 2023-09-05 11:52:27 +03:00
stats_timing.d sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00
trace_futexes.d sys: Remove $FreeBSD$: two-line .h pattern 2023-08-16 11:54:11 -06:00