PR_FUTEX_HASH_GET_SLOTS.2const: Add page

Reviewed-by: Alejandro Colomar <alx@kernel.org>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Message-ID: <20250819071728.1431543-4-bigeasy@linutronix.de>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

diff --git a/man/man2const/PR_FUTEX_HASH_GET_SLOTS.2const b/man/man2const/PR_FUTEX_HASH_GET_SLOTS.2const
new file mode 100644 (file)
index 0000000..e6c1807
--- /dev/null
+++ b/man/man2const/PR_FUTEX_HASH_GET_SLOTS.2const
@@ -0,0 +1,37 @@
+.\" Copyright, the authors of the Linux man-pages project
+.\"
+.\" SPDX-License-Identifier: Linux-man-pages-copyleft
+.\"
+.TH PR_FUTEX_HASH_GET_SLOTS 2const (date) "Linux man-pages (unreleased)"
+.SH NAME
+PR_FUTEX_HASH_GET_SLOTS
+\-
+return the size of the private hash
+.SH LIBRARY
+Standard C library
+.RI ( libc ,\~ \-lc )
+.SH SYNOPSIS
+.nf
+.BR "#include <linux/prctl.h>" "  /* Definition of " PR_* " constants */"
+.B #include <sys/prctl.h>
+.P
+.B int prctl(PR_FUTEX_HASH, PR_FUTEX_HASH_GET_SLOTS);
+.fi
+.SH DESCRIPTION
+Return the current size of the private hash.
+.SH RETURN VALUE
+A value of 0 means that a private hash has not been allocated
+and the global hash is in use.
+.P
+A value >0 specifies the size of the private hash.
+.P
+On error, \-1 is returned, and
+.I errno
+is set to indicate the error.
+.SH STANDARDS
+Linux.
+.SH HISTORY
+Linux 6.17.
+.SH SEE ALSO
+.BR prctl (2),
+.BR PR_FUTEX_HASH (2const)