fs: add ksys_truncate() wrapper; remove in-kernel calls to sys_truncate()

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Using the ksys_truncate() wrapper allows us to get rid of in-kernel
calls to the sys_truncate() syscall. The ksys_ prefix denotes that this
function is meant as a drop-in replacement for the syscall. In
particular, it uses the same calling convention as sys_truncate().

This patch is part of a series which removes in-kernel calls to syscalls.
On this basis, the syscall entry path can be streamlined. For details, see
http://lkml.kernel.org/r/20180325162527.GA17492@light.dominikbrodowski.net

Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

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This commit is contained in:

Dominik Brodowski 2018-03-19 17:32:11 +01:00

parent 806cbae122

commit df260e21e6

8 changed files with 17 additions and 9 deletions

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2

arch/mips/kernel/linux32.c

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6

arch/parisc/kernel/sys_parisc.c

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arch/powerpc/kernel/sys_ppc32.c

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arch/s390/kernel/compat_linux.c

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arch/sparc/kernel/sys_sparc32.c

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arch/x86/ia32/sys_ia32.c

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fs/open.c

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include/linux/syscalls.h

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