fs/quota: use COMPAT_SYSCALL_DEFINE for sys32_quotactl()

While sys32_quotactl() is only needed on x86, it can use the recommended
COMPAT_SYSCALL_DEFINEx() machinery for its setup.

Acked-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

diff --git a/arch/x86/entry/syscalls/syscall_32.tbl b/arch/x86/entry/syscalls/syscall_32.tbl
index ef6edaf..c58f75b 100644 (file)
--- a/arch/x86/entry/syscalls/syscall_32.tbl
+++ b/arch/x86/entry/syscalls/syscall_32.tbl
@@ -137,7 +137,7 @@
 128    i386    init_module             sys_init_module
 129    i386    delete_module           sys_delete_module
 130    i386    get_kernel_syms
-131    i386    quotactl                sys_quotactl                    sys32_quotactl
+131    i386    quotactl                sys_quotactl                    compat_sys_quotactl32
 132    i386    getpgid                 sys_getpgid
 133    i386    fchdir                  sys_fchdir
 134    i386    bdflush                 sys_bdflush

diff --git a/fs/quota/compat.c b/fs/quota/compat.c
index 1577a2f..c305728 100644 (file)
--- a/fs/quota/compat.c
+++ b/fs/quota/compat.c
@@ -41,8 +41,9 @@ struct compat_fs_quota_stat {
        __u16           qs_iwarnlimit;
 };
 
-asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
-                                               qid_t id, void __user *addr)
+COMPAT_SYSCALL_DEFINE4(quotactl32, unsigned int, cmd,
+                      const char __user *, special, qid_t, id,
+                      void __user *, addr)
 {
        unsigned int cmds;
        struct if_dqblk __user *dqblk;

diff --git a/include/linux/compat.h b/include/linux/compat.h
index 16c3027..f1649a5 100644 (file)
--- a/include/linux/compat.h
+++ b/include/linux/compat.h
@@ -461,6 +461,9 @@ asmlinkage ssize_t compat_sys_pwritev2(compat_ulong_t fd,
                const struct compat_iovec __user *vec,
                compat_ulong_t vlen, u32 pos_low, u32 pos_high, rwf_t flags);
 
+asmlinkage long compat_sys_quotactl32(unsigned int cmd,
+               const char __user *special, qid_t id, void __user *addr);
+
 #ifdef __ARCH_WANT_COMPAT_SYS_PREADV64
 asmlinkage long compat_sys_preadv64(unsigned long fd,
                const struct compat_iovec __user *vec,

diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index a63e21e..6ab7ed7 100644 (file)
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -241,8 +241,6 @@ static inline void addr_limit_user_check(void)
 #endif
 }
 
-asmlinkage long sys32_quotactl(unsigned int cmd, const char __user *special,
-                              qid_t id, void __user *addr);
 asmlinkage long sys_time(time_t __user *tloc);
 asmlinkage long sys_stime(time_t __user *tptr);
 asmlinkage long sys_gettimeofday(struct timeval __user *tv,

diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index b518976..951dbda 100644 (file)
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -18,7 +18,7 @@ asmlinkage long sys_ni_syscall(void)
 }
 
 cond_syscall(sys_quotactl);
-cond_syscall(sys32_quotactl);
+cond_syscall(compat_sys_quotactl32);
 cond_syscall(sys_acct);
 cond_syscall(sys_lookup_dcookie);
 cond_syscall(compat_sys_lookup_dcookie);