mount_namespaces.7: Update references to Documentation/filesystems/sharedsubtree.rst

Documentation/filesystems/sharedsubtree.txt has changed to
Documentation/filesystems/sharedsubtree.rst.

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

Changes.old

@@ -54783,7 +54783,7 @@ Changes to individual pages
 iconv.1
 iconvconfig.8
     Michael Kerrisk  [Christopher Yeleighton]
-        FILES: note that files may be under /usr/lib64 rather than /lib/64
+        FILES: note that files may be under /usr/lib64 rather than /usr/lib
             See https://bugzilla.kernel.org/show_bug.cgi?id=214163
 
 ldd.1

man2/_exit.2

@@ -112,14 +112,14 @@ canceled upon
 .BR _exit (),
 is implementation-dependent.
 .SS C library/kernel differences
-In glibc up to version 2.3, the
+The text above in DESCRIPTION describes the traditional effect of
-.BR _exit ()
+.BR _exit (),
-wrapper function invoked the kernel system call of the same name.
+which is to terminate a process,
-Since glibc 2.3, the wrapper function invokes
+and these are the semantics specified by POSIIX.1 and implemented
-.BR exit_group (2),
+by the C library wrapper function.
-in order to terminate all of the threads in a process.
+On modern systems, this means termination of all threads in the process.
 .PP
-The raw
+By contrast with the C library wrapper function, the raw Linux
 .BR _exit ()
 system call terminates only the calling thread, and actions such as
 reparenting child processes or sending
@@ -127,6 +127,13 @@ reparenting child processes or sending
 to the parent process are performed only if this is
 the last thread in the thread group.
 .\" _exit() is used by pthread_exit() to terminate the calling thread
+.PP
+In glibc up to version 2.3, the
+.BR _exit ()
+wrapper function invoked the kernel system call of the same name.
+Since glibc 2.3, the wrapper function invokes
+.BR exit_group (2),
+in order to terminate all of the threads in a process.
 .SH SEE ALSO
 .BR execve (2),
 .BR exit_group (2),

man2/exit_group.2

@@ -39,9 +39,7 @@ glibc provides no wrapper for
 necessitating the use of
 .BR syscall (2).
 .SH DESCRIPTION
-This system call is equivalent to
+This system call terminates all threads
-.BR _exit (2)
-except that it terminates not only the calling thread, but all threads
 in the calling process's thread group.
 .SH RETURN VALUE
 This system call does not return.
@@ -54,4 +52,4 @@ Since glibc 2.3, this is the system call invoked when the
 .BR _exit (2)
 wrapper function is called.
 .SH SEE ALSO
-.BR exit (2)
+.BR _exit (2)

man2/ioctl_tty.2

@@ -386,6 +386,9 @@ Set the foreground process group ID of this terminal.
 Argument:
 .BI "pid_t *" argp
 .IP
+When successful, equivalent to
+.IR "*argp = tcgetsid(fd)" .
+.IP
 Get the session ID of the given terminal.
 This fails with the error
 .B ENOTTY

man3/termios.3

@@ -987,7 +987,9 @@ constant is defined prior to using it.
 The zero baud rate,
 .BR B0 ,
 is used to terminate the connection.
-If B0 is specified, the modem control lines shall no longer be asserted.
+If
+.B B0
+is specified, the modem control lines shall no longer be asserted.
 Normally, this will disconnect the line.
 .B CBAUDEX
 is a mask
@@ -1017,7 +1019,11 @@ which must be specified as one of the
 .BI B nnn
 constants listed above for
 .BR cfsetospeed ().
-If the input baud rate is set to zero, the input baud rate will be
+If the input baud rate is set to the literal constant
+.B 0
+(not the symbolic constant
+.BR B0 ),
+the input baud rate will be
 equal to the output baud rate.
 .PP
 .BR cfsetspeed ()

man5/proc.5

@@ -1519,8 +1519,11 @@ See
 for a description of these fields.
 Parsers should ignore all unrecognized optional fields.
 .IP
-For more information on mount propagation see:
+For more information on mount propagation see
+.I Documentation/filesystems/sharedsubtree.rst
+(or
 .I Documentation/filesystems/sharedsubtree.txt
+before Linux 5.8)
 in the Linux kernel source tree.
 .TP
 .IR /proc/[pid]/mounts " (since Linux 2.4.19)"
@@ -3159,7 +3162,10 @@ This can be used by MAKEDEV scripts for consistency with the kernel.
 .IR /proc/diskstats " (since Linux 2.5.69)"
 This file contains disk I/O statistics for each disk device.
 See the Linux kernel source file
+.I ./Documentation/admin\-guide/iostats.rst
+(or
 .I Documentation/iostats.txt
+before Linux 5.3)
 for further information.
 .TP
 .I /proc/dma
@@ -3831,9 +3837,11 @@ The format of this file is documented in
 .I /proc/mtrr
 Memory Type Range Registers.
 See the Linux kernel source file
+.I Documentation/x86/mtrr.rst
+(or
 .I Documentation/x86/mtrr.txt
 .\" commit 7225e75144b9718cbbe1820d9c011c809d5773fd
-(or
+before Linux 5.2, or
 .I Documentation/mtrr.txt
 before Linux 2.6.28)
 for details.
@@ -4375,7 +4383,10 @@ Using other separators leads to the error
 This directory may contain files with application binary information.
 .\" On some systems, it is not present.
 See the Linux kernel source file
+.I Documentation/sysctl/abi.rst
+(or
 .I Documentation/sysctl/abi.txt
+before Linux 5.3)
 for more information.
 .TP
 .I /proc/sys/debug
@@ -6843,9 +6854,9 @@ of thing that needs to be updated very often.
 .BR sysctl (8)
 .PP
 The Linux kernel source files:
-.IR Documentation/filesystems/proc.txt ,
+.IR Documentation/filesystems/proc.rst ,
-.IR Documentation/sysctl/fs.txt ,
+.IR Documentation/admin\-guide/sysctl/fs.rst ,
-.IR Documentation/sysctl/kernel.txt ,
+.IR Documentation/admin\-guide/sysctl/kernel.rst ,
-.IR Documentation/sysctl/net.txt ,
+.IR Documentation/admin\-guide/sysctl/net.rst ,
 and
-.IR Documentation/sysctl/vm.txt .
+.IR Documentation/admin\-guide/sysctl/vm.rst .

man7/mount_namespaces.7

@@ -701,7 +701,7 @@ as for a bind operation on each mount in the subtree.
 (Unbindable mounts are automatically pruned at the target mount point.)
 .PP
 For further details, see
-.I Documentation/filesystems/sharedsubtree.txt
+.I Documentation/filesystems/sharedsubtree.rst
 in the kernel source tree.
 .\"
 .SS Move (MS_MOVE) semantics
@@ -743,7 +743,7 @@ dest(B)	shared	shared	shared	slave+shared	invalid
 Note: moving a mount that resides under a shared mount is invalid.
 .PP
 For further details, see
-.I Documentation/filesystems/sharedsubtree.txt
+.I Documentation/filesystems/sharedsubtree.rst
 in the kernel source tree.
 .\"
 .SS Mount semantics
@@ -1039,7 +1039,7 @@ For a discussion of propagation types when moving mounts
 and creating bind mounts
 .RB ( MS_BIND ),
 see
-.IR Documentation/filesystems/sharedsubtree.txt .
+.IR Documentation/filesystems/sharedsubtree.rst .
 .\"
 .\" ============================================================
 .\"
@@ -1346,5 +1346,5 @@ See
 .BR pivot_root (8),
 .BR umount (8)
 .PP
-.IR Documentation/filesystems/sharedsubtree.txt
+.IR Documentation/filesystems/sharedsubtree.rst
 in the kernel source tree.

man7/operator.7

@@ -47,12 +47,13 @@ This manual page lists C operators and their precedence in evaluation.
 lb lb lb
 l l l.
 Operator	Associativity	Notes
-() [] \-> . ++ \-\-	left to right	[1]
+[] () . \-> ++ \-\-	left to right	[1]
-! \(ti ++ \-\- + \- (type) * & sizeof	right to left	[2]
+++ \-\- & * + \- \(ti ! sizeof	right to left	[2]
+(type)	right to left
 * / %	left to right
 + \-	left to right
 << >>	left to right
-< <= > >=	left to right
+< > <= >=	left to right
 == !=	left to right
 &	left to right
 \(ha	left to right
@@ -60,7 +61,7 @@ Operator	Associativity	Notes
 &&	left to right
 ||	left to right
 ?:	right to left
-= += \-= *= /= %= <<= >>= &= \(ha= |=	right to left
+= *= /= %= += \-= <<= >>= &= \(ha= |=	right to left
 ,	left to right
 .TE
 .PP