[SPARC]: Add sys_remap_file_pages syscalls.

arch/sparc/kernel/sys_sparc.c

@@ -269,6 +269,21 @@ asmlinkage unsigned long sys_mmap(unsigned long addr, unsigned long len,
 	return do_mmap2(addr, len, prot, flags, fd, off >> PAGE_SHIFT);
 }
 
+extern int sys_remap_file_pages(unsigned long start, unsigned long size,
+				unsigned long prot, unsigned long pgoff,
+				unsigned long flags);
+
+int sparc_remap_file_pages(unsigned long start, unsigned long size,
+			   unsigned long prot, unsigned long pgoff,
+			   unsigned long flags)
+{
+	/* This works on an existing mmap so we don't need to validate
+	 * the range as that was done at the original mmap call.
+	 */
+	return sys_remap_file_pages(start, size, prot,
+				    (pgoff >> (PAGE_SHIFT - 12)), flags);
+}
+
 extern unsigned long do_mremap(unsigned long addr,
 	unsigned long old_len, unsigned long new_len,
 	unsigned long flags, unsigned long new_addr);

arch/sparc/kernel/systbls.S

@@ -56,7 +56,7 @@ sys_call_table:
 /*175*/	.long sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr
 /*180*/	.long sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_sigpending, sys_query_module
 /*185*/	.long sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sys_newuname
-/*190*/	.long sys_init_module, sys_personality, sys_nis_syscall, sys_nis_syscall, sys_nis_syscall
+/*190*/	.long sys_init_module, sys_personality, sparc_remap_file_pages, sys_nis_syscall, sys_nis_syscall
 /*195*/	.long sys_nis_syscall, sys_nis_syscall, sys_getppid, sparc_sigaction, sys_sgetmask
 /*200*/	.long sys_ssetmask, sys_sigsuspend, sys_newlstat, sys_uselib, old_readdir
 /*205*/	.long sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_nis_syscall

arch/sparc64/kernel/systbls.S

@@ -57,7 +57,7 @@ sys_call_table32:
 	.word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr
 /*180*/	.word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys32_sigpending, sys32_query_module
 	.word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sparc64_newuname
-/*190*/	.word sys32_init_module, sparc64_personality, sys_nis_syscall, sys_nis_syscall, sys_nis_syscall
+/*190*/	.word sys32_init_module, sparc64_personality, sys_remap_file_pages, sys_nis_syscall, sys_nis_syscall
 	.word sys_nis_syscall, sys_nis_syscall, sys_getppid, sys32_sigaction, sys_sgetmask
 /*200*/	.word sys_ssetmask, sys_sigsuspend, sys32_newlstat, sys_uselib, old32_readdir
 	.word sys32_readahead, sys32_socketcall, sys_syslog, sys_lookup_dcookie, sys_nis_syscall
@@ -116,7 +116,7 @@ sys_call_table:
 	.word sys_setsid, sys_fchdir, sys_fgetxattr, sys_listxattr, sys_llistxattr
 /*180*/	.word sys_flistxattr, sys_removexattr, sys_lremovexattr, sys_nis_syscall, sys_query_module
 	.word sys_setpgid, sys_fremovexattr, sys_tkill, sys_exit_group, sparc64_newuname
-/*190*/	.word sys_init_module, sparc64_personality, sys_nis_syscall, sys_nis_syscall, sys_nis_syscall
+/*190*/	.word sys_init_module, sparc64_personality, sys_remap_file_pages, sys_nis_syscall, sys_nis_syscall
 	.word sys_nis_syscall, sys_nis_syscall, sys_getppid, sys_nis_syscall, sys_sgetmask
 /*200*/	.word sys_ssetmask, sys_nis_syscall, sys_newlstat, sys_uselib, sys_nis_syscall
 	.word sys_readahead, sys_socketcall, sys_syslog, sys_lookup_dcookie, sys_nis_syscall

include/asm-sparc/unistd.h

@@ -207,7 +207,7 @@
 #define __NR_uname              189 /* Linux Specific                              */
 #define __NR_init_module        190 /* Linux Specific                              */
 #define __NR_personality        191 /* Linux Specific                              */
-/* #define __NR_prof            192    Linux Specific                              */
+#define __NR_remap_file_pages   192 /* Linux Specific                              */
 /* #define __NR_break           193    Linux Specific                              */
 /* #define __NR_lock            194    Linux Specific                              */
 /* #define __NR_mpx             195    Linux Specific                              */

include/asm-sparc64/unistd.h

@@ -207,7 +207,7 @@
 #define __NR_uname              189 /* Linux Specific                              */
 #define __NR_init_module        190 /* Linux Specific                              */
 #define __NR_personality        191 /* Linux Specific                              */
-/* #define __NR_prof            192    Linux Specific                              */
+#define __NR_remap_file_pages   192 /* Linux Specific                              */
 /* #define __NR_break           193    Linux Specific                              */
 /* #define __NR_lock            194    Linux Specific                              */
 /* #define __NR_mpx             195    Linux Specific                              */