Cc: Willy Tarreau <w@xxxxxx> Cc: Jens Axboe <jens.axboe@xxxxxxxxxx> Signed-off-by: Vegard Nossum <vegard.nossum@xxxxxxxxxx> --- man2/pipe.2 | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git man2/pipe.2 man2/pipe.2 index e817ba9..ecf2f34 100644 --- man2/pipe.2 +++ man2/pipe.2 @@ -184,6 +184,35 @@ POSIX.1-2001, POSIX.1-2008. .BR pipe2 () is Linux-specific. + +.SH FILES +On Linux, the following files control how much memory can be used for pipes: +.SS /proc/sys/fs/pipe-max-pages " (since Linux 2.6.34)" +.\" commit b492e95be0ae672922f4734acf3f5d35c30be948 +Deprecated since Linux 2.6.35. +.SS /proc/sys/fs/pipe-max-size " (since Linux 2.6.35)" +.\" commit ff9da691c0498ff81fdd014e7a0731dab2337dac +The maximum size (in bytes) of individual pipes created or set by users +without the +.B CAP_SYS_RESOURCE +capability. +.SS /proc/sys/fs/pipe-user-pages-hard " (since Linux 4.4)" +.\" commit 759c01142a5d0f364a462346168a56de28a80f52 +The combined maximum size (in pages) of all pipes created or set by a +single user without both the +.B CAP_SYS_RESOURCE +and +.B CAP_SYS_ADMIN +capabilities. +.SS /proc/sys/fs/pipe-user-pages-soft " (since Linux 4.4)" +.\" commit 759c01142a5d0f364a462346168a56de28a80f52 +The combined size (in pages) of all pipes created or set by a single +user (without both the +.B CAP_SYS_RESOURCE +and +.B CAP_SYS_ADMIN +capabilities) after which individual pipes will be limited to 1 page. + .SH EXAMPLE .\" fork.2 refers to this example program. The following program creates a pipe, and then -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-man" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
