diff options
| author | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-03-19 17:46:32 +0100 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2018-04-02 20:16:09 +0200 |
| commit | edf292c76b884a499cc60ad5cdada2663cc39a2f (patch) | |
| tree | 834848d30e257f66bf879a49a358438f05172166 /arch | |
| parent | fs: add ksys_p{read,write}64() helpers; remove in-kernel calls to syscalls (diff) | |
| download | linux-edf292c76b884a499cc60ad5cdada2663cc39a2f.tar.xz linux-edf292c76b884a499cc60ad5cdada2663cc39a2f.zip | |
fs: add ksys_fallocate() wrapper; remove in-kernel calls to sys_fallocate()
Using the ksys_fallocate() wrapper allows us to get rid of in-kernel
calls to the sys_fallocate() 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_fallocate().
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kernel/linux32.c | 4 | ||||
| -rw-r--r-- | arch/parisc/kernel/sys_parisc.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/kernel/sys_ppc32.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/compat_linux.c | 4 | ||||
| -rw-r--r-- | arch/sparc/kernel/sys_sparc32.c | 4 | ||||
| -rw-r--r-- | arch/x86/ia32/sys_ia32.c | 4 |
6 files changed, 11 insertions, 11 deletions
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c index 91e85e2f8aa5..0779d474c8ad 100644 --- a/arch/mips/kernel/linux32.c +++ b/arch/mips/kernel/linux32.c @@ -157,6 +157,6 @@ asmlinkage long sys32_fadvise64_64(int fd, int __pad, asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_a2, unsigned offset_a3, unsigned len_a4, unsigned len_a5) { - return sys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), - merge_64(len_a4, len_a5)); + return ksys_fallocate(fd, mode, merge_64(offset_a2, offset_a3), + merge_64(len_a4, len_a5)); } diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c index 4f47e8379854..588fab336ddd 100644 --- a/arch/parisc/kernel/sys_parisc.c +++ b/arch/parisc/kernel/sys_parisc.c @@ -367,8 +367,8 @@ asmlinkage long parisc_sync_file_range(int fd, asmlinkage long parisc_fallocate(int fd, int mode, u32 offhi, u32 offlo, u32 lenhi, u32 lenlo) { - return sys_fallocate(fd, mode, ((u64)offhi << 32) | offlo, - ((u64)lenhi << 32) | lenlo); + return ksys_fallocate(fd, mode, ((u64)offhi << 32) | offlo, + ((u64)lenhi << 32) | lenlo); } long parisc_personality(unsigned long personality) diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c index 36a651e6e033..68f11e1065f8 100644 --- a/arch/powerpc/kernel/sys_ppc32.c +++ b/arch/powerpc/kernel/sys_ppc32.c @@ -100,7 +100,7 @@ asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4, asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, u32 lenhi, u32 lenlo) { - return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, + return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, ((loff_t)lenhi << 32) | lenlo); } diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 71e2c5bc4926..039858f9f128 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -516,6 +516,6 @@ COMPAT_SYSCALL_DEFINE6(s390_sync_file_range, int, fd, u32, offhigh, u32, offlow, COMPAT_SYSCALL_DEFINE6(s390_fallocate, int, fd, int, mode, u32, offhigh, u32, offlow, u32, lenhigh, u32, lenlow) { - return sys_fallocate(fd, mode, ((loff_t)offhigh << 32) + offlow, - ((u64)lenhigh << 32) + lenlow); + return ksys_fallocate(fd, mode, ((loff_t)offhigh << 32) + offlow, + ((u64)lenhigh << 32) + lenlow); } diff --git a/arch/sparc/kernel/sys_sparc32.c b/arch/sparc/kernel/sys_sparc32.c index 40c0d2e1db1d..4ba62d676632 100644 --- a/arch/sparc/kernel/sys_sparc32.c +++ b/arch/sparc/kernel/sys_sparc32.c @@ -250,6 +250,6 @@ long sys32_sync_file_range(unsigned int fd, unsigned long off_high, unsigned lon asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offhi, u32 offlo, u32 lenhi, u32 lenlo) { - return sys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, - ((loff_t)lenhi << 32) | lenlo); + return ksys_fallocate(fd, mode, ((loff_t)offhi << 32) | offlo, + ((loff_t)lenhi << 32) | lenlo); } diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c index c08c25f73d79..df2acb13623f 100644 --- a/arch/x86/ia32/sys_ia32.c +++ b/arch/x86/ia32/sys_ia32.c @@ -226,8 +226,8 @@ COMPAT_SYSCALL_DEFINE6(x86_fallocate, int, fd, int, mode, unsigned int, offset_lo, unsigned int, offset_hi, unsigned int, len_lo, unsigned int, len_hi) { - return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, - ((u64)len_hi << 32) | len_lo); + return ksys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo, + ((u64)len_hi << 32) | len_lo); } /* |