Merge branch 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs update from Al Viro:
 "Part one:

   - struct filename-related cleanups

   - saner iov_iter_init() replacements (and switching the syscalls to
     use of those)

   - ntfs switch to ->write_iter() (Anton)

   - aio cleanups and splitting iocb into common and async parts
     (Christoph)

   - assorted fixes (me, bfields, Andrew Elble)

  There's a lot more, including the completion of switchover to
  ->{read,write}_iter(), d_inode/d_backing_inode annotations, f_flags
  race fixes, etc, but that goes after #for-davem merge.  David has
  pulled it, and once it's in I'll send the next vfs pull request"

* 'for-linus-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (35 commits)
  sg_start_req(): use import_iovec()
  sg_start_req(): make sure that there's not too many elements in iovec
  blk_rq_map_user(): use import_single_range()
  sg_io(): use import_iovec()
  process_vm_access: switch to {compat_,}import_iovec()
  switch keyctl_instantiate_key_common() to iov_iter
  switch {compat_,}do_readv_writev() to {compat_,}import_iovec()
  aio_setup_vectored_rw(): switch to {compat_,}import_iovec()
  vmsplice_to_user(): switch to import_iovec()
  kill aio_setup_single_vector()
  aio: simplify arguments of aio_setup_..._rw()
  aio: lift iov_iter_init() into aio_setup_..._rw()
  lift iov_iter into {compat_,}do_readv_writev()
  NFS: fix BUG() crash in notify_change() with patch to chown_common()
  dcache: return -ESTALE not -EBUSY on distributed fs race
  NTFS: Version 2.1.32 - Update file write from aio_write to write_iter.
  VFS: Add iov_iter_fault_in_multipages_readable()
  drop bogus check in file_open_root()
  switch security_inode_getattr() to struct path *
  constify tomoyo_realpath_from_path()
  ...

13 files changed, 1 insertions, 30 deletions

diff --git a/arch/arc/kernel/process.c b/arch/arc/kernel/process.c
index 98c00a2d4dd9..f46efd14059d 100644
--- a/arch/arc/kernel/process.c
+++ b/arch/arc/kernel/process.c
@@ -155,8 +155,6 @@ int copy_thread(unsigned long clone_flags,
  */
 void start_thread(struct pt_regs * regs, unsigned long pc, unsigned long usp)
 {
-	set_fs(USER_DS); /* user space */
-
 	regs->sp = usp;
 	regs->ret = pc;
 
diff --git a/arch/c6x/kernel/process.c b/arch/c6x/kernel/process.c
index 57d2ea8d1977..3ae9f5a166a0 100644
--- a/arch/c6x/kernel/process.c
+++ b/arch/c6x/kernel/process.c
@@ -101,7 +101,6 @@ void start_thread(struct pt_regs *regs, unsigned int pc, unsigned long usp)
 	 */
 	usp -= 8;
 
-	set_fs(USER_DS);
 	regs->pc  = pc;
 	regs->sp  = usp;
 	regs->tsr |= 0x40; /* set user mode */
diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c
index 336713ab4745..85ca6727ca07 100644
--- a/arch/frv/kernel/signal.c
+++ b/arch/frv/kernel/signal.c
@@ -176,8 +176,6 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set)
 	struct sigframe __user *frame;
 	int rsig, sig = ksig->sig;
 
-	set_fs(USER_DS);
-
 	frame = get_sigframe(ksig, sizeof(*frame));
 
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
@@ -257,8 +255,6 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set)
 	struct rt_sigframe __user *frame;
 	int rsig, sig = ksig->sig;
 
-	set_fs(USER_DS);
-
 	frame = get_sigframe(ksig, sizeof(*frame));
 
 	if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
diff --git a/arch/hexagon/kernel/process.c b/arch/hexagon/kernel/process.c
index 0a0dd5c05b46..a9ebd471823a 100644
--- a/arch/hexagon/kernel/process.c
+++ b/arch/hexagon/kernel/process.c
@@ -37,8 +37,6 @@
  */
 void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
 {
-	/* Set to run with user-mode data segmentation */
-	set_fs(USER_DS);
 	/* We want to zero all data-containing registers. Is this overkill? */
 	memset(regs, 0, sizeof(*regs));
 	/* We might want to also zero all Processor registers here */
diff --git a/arch/m32r/kernel/signal.c b/arch/m32r/kernel/signal.c
index 7736c6660a15..8c25e0c8f6a5 100644
--- a/arch/m32r/kernel/signal.c
+++ b/arch/m32r/kernel/signal.c
@@ -214,8 +214,6 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
 	regs->r2 = (unsigned long)&frame->uc;
 	regs->bpc = (unsigned long)ksig->ka.sa.sa_handler;
 
-	set_fs(USER_DS);
-
 #if DEBUG_SIG
 	printk("SIG deliver (%s:%d): sp=%p pc=%p\n",
 		current->comm, current->pid, frame, regs->pc);
diff --git a/arch/metag/include/asm/processor.h b/arch/metag/include/asm/processor.h
index 13272fd5a5ba..0838ca699764 100644
--- a/arch/metag/include/asm/processor.h
+++ b/arch/metag/include/asm/processor.h
@@ -111,7 +111,6 @@ struct thread_struct {
  */
 #define start_thread(regs, pc, usp) do {				   \
 	unsigned int *argc = (unsigned int *) bprm->exec;		   \
-	set_fs(USER_DS);						   \
 	current->thread.int_depth = 1;					   \
 	/* Force this process down to user land */			   \
 	regs->ctx.SaveMask = TBICTX_PRIV_BIT;				   \
diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
index a1cbaf90e2ea..20ccd4e2baa5 100644
--- a/arch/microblaze/kernel/signal.c
+++ b/arch/microblaze/kernel/signal.c
@@ -236,8 +236,6 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
 	/* Offset to handle microblaze rtid r14, 0 */
 	regs->pc = (unsigned long)ksig->ka.sa.sa_handler;
 
-	set_fs(USER_DS);
-
 #ifdef DEBUG_SIG
 	pr_info("SIG deliver (%s:%d): sp=%p pc=%08lx\n",
 		current->comm, current->pid, frame, regs->pc);
diff --git a/arch/nios2/kernel/process.c b/arch/nios2/kernel/process.c
index 0e075b5ad2a5..2f8c74f93e70 100644
--- a/arch/nios2/kernel/process.c
+++ b/arch/nios2/kernel/process.c
@@ -94,7 +94,6 @@ void show_regs(struct pt_regs *regs)
 
 void flush_thread(void)
 {
-	set_fs(USER_DS);
 }
 
 int copy_thread(unsigned long clone_flags,
diff --git a/arch/openrisc/kernel/process.c b/arch/openrisc/kernel/process.c
index 386af258591d..7095dfe7666b 100644
--- a/arch/openrisc/kernel/process.c
+++ b/arch/openrisc/kernel/process.c
@@ -197,7 +197,6 @@ void start_thread(struct pt_regs *regs, unsigned long pc, unsigned long sp)
 {
 	unsigned long sr = mfspr(SPR_SR) & ~SPR_SR_SM;
 
-	set_fs(USER_DS);
 	memset(regs, 0, sizeof(struct pt_regs));
 
 	regs->pc = pc;
diff --git a/arch/s390/hypfs/inode.c b/arch/s390/hypfs/inode.c
index 99824ff8dd35..df7d8cbee377 100644
--- a/arch/s390/hypfs/inode.c
+++ b/arch/s390/hypfs/inode.c
@@ -21,7 +21,7 @@
 #include <linux/module.h>
 #include <linux/seq_file.h>
 #include <linux/mount.h>
-#include <linux/aio.h>
+#include <linux/uio.h>
 #include <asm/ebcdic.h>
 #include "hypfs.h"
 
diff --git a/arch/sh/kernel/signal_32.c b/arch/sh/kernel/signal_32.c
index 0b34f2a704fe..97292890b51b 100644
--- a/arch/sh/kernel/signal_32.c
+++ b/arch/sh/kernel/signal_32.c
@@ -329,8 +329,6 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set,
 	if (err)
 		return -EFAULT;
 
-	set_fs(USER_DS);
-
 	pr_debug("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n",
 		 current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);
 
@@ -408,8 +406,6 @@ static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
 	if (err)
 		return -EFAULT;
 
-	set_fs(USER_DS);
-
 	pr_debug("SIG deliver (%s:%d): sp=%p pc=%08lx pr=%08lx\n",
 		 current->comm, task_pid_nr(current), frame, regs->pc, regs->pr);
 
diff --git a/arch/sh/kernel/signal_64.c b/arch/sh/kernel/signal_64.c
index 71993c6a7d94..0462995d4d7f 100644
--- a/arch/sh/kernel/signal_64.c
+++ b/arch/sh/kernel/signal_64.c
@@ -457,8 +457,6 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs
 
 	regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler);
 
-	set_fs(USER_DS);
-
 	/* Broken %016Lx */
 	pr_debug("SIG deliver (#%d,%s:%d): sp=%p pc=%08Lx%08Lx link=%08Lx%08Lx\n",
 		 signal, current->comm, current->pid, frame,
@@ -547,8 +545,6 @@ static int setup_rt_frame(struct ksignal *kig, sigset_t *set,
 	regs->regs[REG_ARG3] = (unsigned long long)(unsigned long)(signed long)&frame->uc.uc_mcontext;
 	regs->pc = neff_sign_extend((unsigned long)ksig->ka.sa.sa_handler);
 
-	set_fs(USER_DS);
-
 	pr_debug("SIG deliver (#%d,%s:%d): sp=%p pc=%08Lx%08Lx link=%08Lx%08Lx\n",
 		 signal, current->comm, current->pid, frame,
 		 regs->pc >> 32, regs->pc & 0xffffffff,
diff --git a/arch/xtensa/kernel/signal.c b/arch/xtensa/kernel/signal.c
index 3d733ba16f28..6b3790445cbe 100644
--- a/arch/xtensa/kernel/signal.c
+++ b/arch/xtensa/kernel/signal.c
@@ -405,11 +405,6 @@ static int setup_frame(struct ksignal *ksig, sigset_t *set,
 	regs->areg[8] = (unsigned long) &frame->uc;
 	regs->threadptr = tp;
 
-	/* Set access mode to USER_DS.  Nomenclature is outdated, but
-	 * functionality is used in uaccess.h
-	 */
-	set_fs(USER_DS);
-
 #if DEBUG_SIG
 	printk("SIG rt deliver (%s:%d): signal=%d sp=%p pc=%08x\n",
 		current->comm, current->pid, signal, frame, regs->pc);