diff --git a/arch/alpha/include/asm/user.h b/arch/alpha/include/asm/user.h
index 3df37492c7b70688b17c44f7bc408cbb48c9be7f..c9f525a6aab8099023710ffe7ec57c0f2b737f48 100644
--- a/arch/alpha/include/asm/user.h
+++ b/arch/alpha/include/asm/user.h
@@ -45,10 +45,4 @@ struct user {
char u_comm[32]; /* user command name */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_DATA_START_ADDR (u.start_data)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
-
#endif /* _ALPHA_USER_H */
diff --git a/arch/arm/include/asm/user.h b/arch/arm/include/asm/user.h
index c799a3c49342882df3ee00a5f3c07f598f55d4a3..167d44b550f469df662cf9d9cf8a787dc52b7066 100644
--- a/arch/arm/include/asm/user.h
+++ b/arch/arm/include/asm/user.h
@@ -77,10 +77,6 @@ struct user{
struct user_fp_struct * u_fp0;/* Used by gdb to help find the values for */
/* the FP registers. */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
/*
* User specific VFP registers. If only VFPv2 is present, registers 16 to 31
diff --git a/arch/h8300/include/asm/user.h b/arch/h8300/include/asm/user.h
index 2298909f24c633da17559f65dc3e0ede2e677b88..161653d84b340de9df12956e232287f6d9c11dd3 100644
--- a/arch/h8300/include/asm/user.h
+++ b/arch/h8300/include/asm/user.h
@@ -67,9 +67,5 @@ struct user {
unsigned long magic; /* To uniquely identify a core file */
char u_comm[32]; /* User command that was responsible */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif
diff --git a/arch/ia64/include/asm/user.h b/arch/ia64/include/asm/user.h
index 0ba486651b7cb0b4a3ce362ece2cb701bd559665..ec03d3ab87152fe40c1191b3441f055ac8acb5f9 100644
--- a/arch/ia64/include/asm/user.h
+++ b/arch/ia64/include/asm/user.h
@@ -50,10 +50,4 @@ struct user {
char u_comm[32]; /* user command name */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_DATA_START_ADDR (u.start_data)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
-
#endif /* _ASM_IA64_USER_H */
diff --git a/arch/m68k/include/asm/user.h b/arch/m68k/include/asm/user.h
index 509d555977c8adae9cc11c0d6d051d1170ff5e58..61413bff613a686d0c830cdfe3f32dd8855798c8 100644
--- a/arch/m68k/include/asm/user.h
+++ b/arch/m68k/include/asm/user.h
@@ -79,9 +79,5 @@ struct user{
unsigned long magic; /* To uniquely identify a core file */
char u_comm[32]; /* User command that was responsible */
};
-#define NBPG 4096
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif
diff --git a/arch/powerpc/include/asm/user.h b/arch/powerpc/include/asm/user.h
index 99443b8594e7e7fec9ec1e4384bcf25193debd48..7fae7e597ba4922b5636bf852aad7a8356c257dd 100644
--- a/arch/powerpc/include/asm/user.h
+++ b/arch/powerpc/include/asm/user.h
@@ -44,9 +44,4 @@ struct user {
char u_comm[32]; /* user command name */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_DATA_START_ADDR (u.start_data)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif /* _ASM_POWERPC_USER_H */
diff --git a/arch/s390/include/asm/user.h b/arch/s390/include/asm/user.h
index 0ca572ced21b0e658a4b97b5095b8ed0fa239aed..8e8aaf48582e9a789b3d488881d6935d7ce4a621 100644
--- a/arch/s390/include/asm/user.h
+++ b/arch/s390/include/asm/user.h
@@ -67,9 +67,5 @@ struct user {
unsigned long magic; /* To uniquely identify a core file */
char u_comm[32]; /* User command that was responsible */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif /* _S390_USER_H */
diff --git a/arch/sh/include/asm/user.h b/arch/sh/include/asm/user.h
index 7dfd3f6461e640aaedf08cdcf76a645597c80199..12ea0f3f441991fff47370e5841c5156a4cdc95d 100644
--- a/arch/sh/include/asm/user.h
+++ b/arch/sh/include/asm/user.h
@@ -52,10 +52,4 @@ struct user {
char u_comm[32]; /* user command name */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_DATA_START_ADDR (u.start_data)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
-
#endif /* __ASM_SH_USER_H */
diff --git a/arch/um/include/asm/Kbuild b/arch/um/include/asm/Kbuild
index b08bd29662538de0318894ee871270f448a9c41c..f1f3f52f1e9ccc280e7fecf4916fe0a090063f04 100644
--- a/arch/um/include/asm/Kbuild
+++ b/arch/um/include/asm/Kbuild
@@ -24,7 +24,6 @@ generic-y += softirq_stack.h
generic-y += switch_to.h
generic-y += topology.h
generic-y += trace_clock.h
-generic-y += word-at-a-time.h
generic-y += kprobes.h
generic-y += mm_hooks.h
generic-y += vga.h
diff --git a/arch/x86/include/asm/user_32.h b/arch/x86/include/asm/user_32.h
index d72c3d66e94f7afcea6c97fb35532bbf5e232d26..8963915e533f269e31489e7c86881c4f3ebeac0e 100644
--- a/arch/x86/include/asm/user_32.h
+++ b/arch/x86/include/asm/user_32.h
@@ -124,9 +124,5 @@ struct user{
char u_comm[32]; /* User command that was responsible */
int u_debugreg[8];
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif /* _ASM_X86_USER_32_H */
diff --git a/arch/x86/include/asm/user_64.h b/arch/x86/include/asm/user_64.h
index db909923611c250e44eb53fa960ed8ed0a84570b..1dd10f07ccd627d584bbcc36ae7e0f96057d6eac 100644
--- a/arch/x86/include/asm/user_64.h
+++ b/arch/x86/include/asm/user_64.h
@@ -130,9 +130,5 @@ struct user {
unsigned long error_code; /* CPU error code or 0 */
unsigned long fault_address; /* CR3 or 0 */
};
-#define NBPG PAGE_SIZE
-#define UPAGES 1
-#define HOST_TEXT_START_ADDR (u.start_code)
-#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG)
#endif /* _ASM_X86_USER_64_H */
diff --git a/arch/x86/lib/csum-partial_64.c b/arch/x86/lib/csum-partial_64.c
index 1f8a8f8951738514b85684ae2985e1be510e74dd..50734a23034c438487e060cde8304c2a5ad05af7 100644
--- a/arch/x86/lib/csum-partial_64.c
+++ b/arch/x86/lib/csum-partial_64.c
@@ -93,7 +93,6 @@ __wsum csum_partial(const void *buff, int len, __wsum sum)
buff += 8;
}
if (len & 7) {
-#ifdef CONFIG_DCACHE_WORD_ACCESS
unsigned int shift = (8 - (len & 7)) * 8;
unsigned long trail;
@@ -103,31 +102,6 @@ __wsum csum_partial(const void *buff, int len, __wsum sum)
"adcq $0,%[res]"
: [res] "+r" (temp64)
: [trail] "r" (trail));
-#else
- if (len & 4) {
- asm("addq %[val],%[res]\n\t"
- "adcq $0,%[res]"
- : [res] "+r" (temp64)
- : [val] "r" ((u64)*(u32 *)buff)
- : "memory");
- buff += 4;
- }
- if (len & 2) {
- asm("addq %[val],%[res]\n\t"
- "adcq $0,%[res]"
- : [res] "+r" (temp64)
- : [val] "r" ((u64)*(u16 *)buff)
- : "memory");
- buff += 2;
- }
- if (len & 1) {
- asm("addq %[val],%[res]\n\t"
- "adcq $0,%[res]"
- : [res] "+r" (temp64)
- : [val] "r" ((u64)*(u8 *)buff)
- : "memory");
- }
-#endif
}
result = add32_with_carry(temp64 >> 32, temp64 & 0xffffffff);
if (unlikely(odd)) {
diff --git a/arch/x86/um/Kconfig b/arch/x86/um/Kconfig
index ead7e5b3a97573defc132f412bbacc5090dcb1ee..1bcd42c5303940c482002c6ddcf75fa6d8270915 100644
--- a/arch/x86/um/Kconfig
+++ b/arch/x86/um/Kconfig
@@ -9,6 +9,7 @@ endmenu
config UML_X86
def_bool y
select ARCH_BINFMT_ELF_EXTRA_PHDRS if X86_32
+ select DCACHE_WORD_ACCESS
config 64BIT
bool "64-bit kernel" if "$(SUBARCH)" = "x86"
diff --git a/fs/aio.c b/fs/aio.c
index 7b66b93d5bfa7a3e0e750c7eed1fd890116ca2d5..3c249b93863274ccb6b1d10c05fa901861e5c848 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1552,7 +1552,6 @@ static int aio_read(struct kiocb *req, const struct iocb *iocb,
file = req->ki_filp;
if (unlikely(!(file->f_mode & FMODE_READ)))
return -EBADF;
- ret = -EINVAL;
if (unlikely(!file->f_op->read_iter))
return -EINVAL;
diff --git a/fs/internal.h b/fs/internal.h
index fb2c2ea807d7466f908a0ae113679fbf55d1c5f6..08503dc68d2b1ef7f2cc0f6b0986654036dcdc1a 100644
--- a/fs/internal.h
+++ b/fs/internal.h
@@ -74,7 +74,7 @@ int do_linkat(int olddfd, struct filename *old, int newdfd,
* namespace.c
*/
extern struct vfsmount *lookup_mnt(const struct path *);
-extern int finish_automount(struct vfsmount *, struct path *);
+extern int finish_automount(struct vfsmount *, const struct path *);
extern int sb_prepare_remount_readonly(struct super_block *);
diff --git a/fs/kernfs/file.c b/fs/kernfs/file.c
index 74067a73ff78636e61192360c23d8c0d89bbfdf7..88423069407c04ab0253d654713943cc4b09c459 100644
--- a/fs/kernfs/file.c
+++ b/fs/kernfs/file.c
@@ -120,13 +120,8 @@ static void *kernfs_seq_start(struct seq_file *sf, loff_t *ppos)
if (next == ERR_PTR(-ENODEV))
kernfs_seq_stop_active(sf, next);
return next;
- } else {
- /*
- * The same behavior and code as single_open(). Returns
- * !NULL if pos is at the beginning; otherwise, NULL.
- */
- return NULL + !*ppos;
}
+ return single_start(sf, ppos);
}
static void *kernfs_seq_next(struct seq_file *sf, void *v, loff_t *ppos)
diff --git a/fs/namespace.c b/fs/namespace.c
index 6e9844b8c6fb46295a3e09edfbb6fdebdaafe7b0..a0a36bfa3aa0543b75da0c6784dbacb50f53d805 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -2112,22 +2112,23 @@ static int invent_group_ids(struct mount *mnt, bool recurse)
int count_mounts(struct mnt_namespace *ns, struct mount *mnt)
{
unsigned int max = READ_ONCE(sysctl_mount_max);
- unsigned int mounts = 0, old, pending, sum;
+ unsigned int mounts = 0;
struct mount *p;
+ if (ns->mounts >= max)
+ return -ENOSPC;
+ max -= ns->mounts;
+ if (ns->pending_mounts >= max)
+ return -ENOSPC;
+ max -= ns->pending_mounts;
+
for (p = mnt; p; p = next_mnt(p, mnt))
mounts++;
- old = ns->mounts;
- pending = ns->pending_mounts;
- sum = old + pending;
- if ((old > sum) ||
- (pending > sum) ||
- (max < sum) ||
- (mounts > (max - sum)))
+ if (mounts > max)
return -ENOSPC;
- ns->pending_mounts = pending + mounts;
+ ns->pending_mounts += mounts;
return 0;
}
@@ -2921,7 +2922,7 @@ static int do_move_mount_old(struct path *path, const char *old_name)
* add a mount into a namespace's mount tree
*/
static int do_add_mount(struct mount *newmnt, struct mountpoint *mp,
- struct path *path, int mnt_flags)
+ const struct path *path, int mnt_flags)
{
struct mount *parent = real_mount(path->mnt);
@@ -3044,7 +3045,7 @@ static int do_new_mount(struct path *path, const char *fstype, int sb_flags,
return err;
}
-int finish_automount(struct vfsmount *m, struct path *path)
+int finish_automount(struct vfsmount *m, const struct path *path)
{
struct dentry *dentry = path->dentry;
struct mountpoint *mp;
diff --git a/fs/read_write.c b/fs/read_write.c
index dc5000173b80a2e36d576df7afb49706e44c0a92..e643aec2b0efe929bce63d6b4d1ddcf81b0b0399 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1630,7 +1630,6 @@ int generic_write_checks_count(struct kiocb *iocb, loff_t *count)
if (!*count)
return 0;
- /* FIXME: this is for backwards compatibility with 2.4 */
if (iocb->ki_flags & IOCB_APPEND)
iocb->ki_pos = i_size_read(inode);
diff --git a/fs/seq_file.c b/fs/seq_file.c
index f8e1f4ee87ffca16ee019b4dcd0d29c4fd3fdef3..7ab8a58c29b618b9ead091266dd5b4c55f58c0cb 100644
--- a/fs/seq_file.c
+++ b/fs/seq_file.c
@@ -554,9 +554,9 @@ int seq_dentry(struct seq_file *m, struct dentry *dentry, const char *esc)
}
EXPORT_SYMBOL(seq_dentry);
-static void *single_start(struct seq_file *p, loff_t *pos)
+void *single_start(struct seq_file *p, loff_t *pos)
{
- return NULL + (*pos == 0);
+ return *pos ? NULL : SEQ_START_TOKEN;
}
static void *single_next(struct seq_file *p, void *v, loff_t *pos)
diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h
index 88cc16444b43125e5fbd274868013fe29869e465..60820ab511d224f3bb655b0a43459591eae6821e 100644
--- a/include/linux/seq_file.h
+++ b/include/linux/seq_file.h
@@ -162,6 +162,7 @@ int seq_dentry(struct seq_file *, struct dentry *, const char *);
int seq_path_root(struct seq_file *m, const struct path *path,
const struct path *root, const char *esc);
+void *single_start(struct seq_file *, loff_t *);
int single_open(struct file *, int (*)(struct seq_file *, void *), void *);
int single_open_size(struct file *, int (*)(struct seq_file *, void *), void *, size_t);
int single_release(struct inode *, struct file *);