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authorDominik Brodowski <linux@dominikbrodowski.net>2018-03-11 13:34:41 +0300
committerDominik Brodowski <linux@dominikbrodowski.net>2018-04-02 21:15:51 +0300
commite7a3e8b2edf544ec28f689385c3adc2903f46ec0 (patch)
treef2fa667f8c2a6774aa466ab378a11e4c27cbd066 /arch
parenta16fe33ab5572e52ef4cb9719d6eb49623b2528a (diff)
downloadlinux-e7a3e8b2edf544ec28f689385c3adc2903f46ec0.tar.xz
fs: add ksys_write() helper; remove in-kernel calls to sys_write()
Using this helper allows us to avoid the in-kernel calls to the sys_write() 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_write(). In the near future, the do_mounts / initramfs callers of ksys_write() should be converted to use filp_open() and vfs_write() instead. 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: Alexander Viro <viro@zeniv.linux.org.uk> Cc: linux-s390@vger.kernel.org Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/compat_linux.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 79b7a3438d54..5a9cfde5fc28 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -468,7 +468,7 @@ COMPAT_SYSCALL_DEFINE3(s390_write, unsigned int, fd, const char __user *, buf, c
if ((compat_ssize_t) count < 0)
return -EINVAL;
- return sys_write(fd, buf, count);
+ return ksys_write(fd, buf, count);
}
/*