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Subject[PATCH] Generic compat_sys_fallocate
Basically everyone is using the same sys32_fallocate. Delete a whole bunch of
archdep code and move the compat wrapper to fs/compat.c

Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
---
NOTE: Patch hunk in scall64-o32.S depends on a patch going in through
Ralf's linux-mips tree.

---
arch/mips/kernel/linux32.c | 7 -------
arch/mips/kernel/scall64-o32.S | 2 +-
arch/powerpc/kernel/sys_ppc32.c | 7 -------
arch/sparc64/kernel/sys_sparc32.c | 6 ------
arch/x86_64/ia32/ia32entry.S | 2 +-
arch/x86_64/ia32/sys_ia32.c | 7 -------
fs/compat.c | 10 ++++++++++
include/linux/compat.h | 2 ++
8 files changed, 14 insertions(+), 29 deletions(-)
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 135d9a5..c37568d 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -566,13 +566,6 @@ asmlinkage long sys32_fadvise64_64(int fd, int __pad,
flags);
}

-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));
-}
-
save_static_function(sys32_clone);
static int noinline __used
_sys32_clone(nabi_no_regargs struct pt_regs regs)
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index dd68afc..bb724cc 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -525,5 +525,5 @@ sys_call_table:
PTR compat_sys_signalfd
PTR compat_sys_timerfd
PTR sys_eventfd
- PTR sys32_fallocate /* 4320 */
+ PTR compat_sys_fallocate /* 4320 */
.size sys_call_table,.-sys_call_table
diff --git a/arch/powerpc/kernel/sys_ppc32.c b/arch/powerpc/kernel/sys_ppc32.c
index bd85b5f..b42cbf1 100644
--- a/arch/powerpc/kernel/sys_ppc32.c
+++ b/arch/powerpc/kernel/sys_ppc32.c
@@ -773,13 +773,6 @@ asmlinkage int compat_sys_truncate64(const char __user * path, u32 reg4,
return sys_truncate(path, (high << 32) | low);
}

-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);
-}
-
asmlinkage int compat_sys_ftruncate64(unsigned int fd, u32 reg4, unsigned long high,
unsigned long low)
{
diff --git a/arch/sparc64/kernel/sys_sparc32.c b/arch/sparc64/kernel/sys_sparc32.c
index e8dce90..5d60883 100644
--- a/arch/sparc64/kernel/sys_sparc32.c
+++ b/arch/sparc64/kernel/sys_sparc32.c
@@ -1028,9 +1028,3 @@ long compat_sync_file_range(int fd, unsigned long off_high, unsigned long off_lo
flags);
}

-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);
-}
diff --git a/arch/x86_64/ia32/ia32entry.S b/arch/x86_64/ia32/ia32entry.S
index 18b2318..28d8fff 100644
--- a/arch/x86_64/ia32/ia32entry.S
+++ b/arch/x86_64/ia32/ia32entry.S
@@ -732,5 +732,5 @@ ia32_sys_call_table:
.quad compat_sys_signalfd
.quad compat_sys_timerfd
.quad sys_eventfd
- .quad sys32_fallocate
+ .quad compat_sys_fallocate
ia32_syscall_end:
diff --git a/arch/x86_64/ia32/sys_ia32.c b/arch/x86_64/ia32/sys_ia32.c
index bee96d6..ca8deac 100644
--- a/arch/x86_64/ia32/sys_ia32.c
+++ b/arch/x86_64/ia32/sys_ia32.c
@@ -880,10 +880,3 @@ asmlinkage long sys32_fadvise64(int fd, unsigned offset_lo, unsigned offset_hi,
len, advice);
}

-asmlinkage long sys32_fallocate(int fd, int mode, unsigned offset_lo,
- unsigned offset_hi, unsigned len_lo,
- unsigned len_hi)
-{
- return sys_fallocate(fd, mode, ((u64)offset_hi << 32) | offset_lo,
- ((u64)len_hi << 32) | len_lo);
-}
diff --git a/fs/compat.c b/fs/compat.c
index 15078ce..2629a25 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -2226,3 +2226,13 @@ asmlinkage long compat_sys_timerfd(int ufd, int clockid, int flags,
}

#endif /* CONFIG_TIMERFD */
+
+asmlinkage long compat_sys_fallocate(int fd, int mode,
+ u32 offset_lo, u32 offset_hi,
+ u32 len_lo, u32 len_hi)
+{
+ u64 offset = ((u64)offset_hi << 32) | offset_lo;
+ u64 len = ((u64)len_hi << 32) | len_hi;
+
+ return sys_fallocate(fd, mode, offset, len);
+}
diff --git a/include/linux/compat.h b/include/linux/compat.h
index 0e69d2c..a770c6c 100644
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -266,6 +266,8 @@ asmlinkage long compat_sys_signalfd(int ufd,
compat_size_t sigsetsize);
asmlinkage long compat_sys_timerfd(int ufd, int clockid, int flags,
const struct compat_itimerspec __user *utmr);
+asmlinkage long compat_sys_fallocate(int fd, int mode, u32 offset_lo,
+ u32 offset_hi, u32 len_lo, u32 len_hi);

#endif /* CONFIG_COMPAT */
#endif /* _LINUX_COMPAT_H */
--
1.5.3.2
-
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