[PATCH 1/2] pipe.7: Note change to default pipe size when soft limit is exceeded

[Kienan Stewart <kstewart@efficios.com>]

See upstream commit:

    commit 46c4c9d1beb7f5b4cec4dd90e7728720583ee348
    Author: Alex Xu (Hello71) <alex_y_xu@yahoo.ca>
    Date:   Thu Aug 5 10:40:47 2021 -0400

        pipe: increase minimum default pipe size to 2 pages

Signed-off-by: Kienan Stewart <kstewart@efficios.com>
---
 man/man7/pipe.7 | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/man/man7/pipe.7 b/man/man7/pipe.7
index d1fad9974..c7f3fbb9e 100644
--- a/man/man7/pipe.7
+++ b/man/man7/pipe.7
@@ -223,6 +223,9 @@ So long as the total number of pages allocated to pipe buffers
 for this user is at this limit,
 individual pipes created by a user will be limited to one page,
 and attempts to increase a pipe's capacity will be denied.
+As of Linux 5.14 the default capacity of individual pipes created
+by a user is two pages instead. Users may reduce the pipe capacity
+below this default value.
 .IP
 When the value of this limit is zero, no soft limit is applied.
 The default value for this file is 16384,
-- 
2.45.2