X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=man%2Fsd_readahead.xml;h=88b135b7ecd4acc035e1d6863c677c7f148d42a6;hp=178f907afa95bde3b28d7a62953d7b4d94472a8f;hb=71e6c1cf47c35cc5a58cefaabe4f6848d6f09501;hpb=6624768c9c39ab409edebe07cb06ecd93cc6f3ed
diff --git a/man/sd_readahead.xml b/man/sd_readahead.xml
index 178f907af..88b135b7e 100644
--- a/man/sd_readahead.xml
+++ b/man/sd_readahead.xml
@@ -44,7 +44,7 @@
sd_readahead
- Control ongoing disk read-ahead operations
+ Control ongoing disk boot-time read-ahead operations
@@ -62,7 +62,7 @@
Description
sd_readahead() may be
called by programs involved with early boot-up to
- control ongoing disk read-ahead operations. It may be
+ control ongoing boot-time disk read-ahead operations. It may be
used to terminate read-ahead operations in case an
uncommon disk access pattern is to be expected and
hence read-ahead replay or collection is unlikely to
@@ -115,36 +115,42 @@
Notes
This function is provided by the reference
- implementation of APIs for new-style daemons and
- distributed with the systemd package. The algorithm
- it implements is simple, and can easily be
- reimplemented in daemons if it is important to support
- this interface without using the reference
- implementation.
+ implementation of APIs for controlling boot-time
+ read-ahead and distributed with the systemd
+ package. The algorithm it implements is simple, and
+ can easily be reimplemented in daemons if it is
+ important to support this interface without using the
+ reference implementation.
Internally, this function creates a file in
- /dev/.systemd/readahead/ which is
+ /run/systemd/readahead/ which is
then used as flag file to notify the read-ahead
subsystem.
For details about the algorithm check the
liberally licensed reference implementation sources:
-
+
resp.
+ url="http://cgit.freedesktop.org/systemd/tree/src/sd-readahead.h"/>
sd_readahead() is
- implemented in the reference implementation's drop-in
- sd-daemon.c and
- sd-daemon.h files. It is
- recommended that applications consuming this API copy
- the implementation into their source tree. For more
- details about the reference implementation see
- sd_daemon7
-
- If -DDISABLE_SYSTEMD is set during compilation
- this function will always return 0 and otherwise
- become a NOP.
+ implemented in the reference implementation's
+ sd-readahead.c and
+ sd-readahead.h files. These
+ interfaces are available as shared library, which can
+ be compiled and linked to with the
+ libsystemd-daemon
+ pkg-config1
+ file. Alternatively, applications consuming this API
+ may copy the implementation into their source
+ tree. For more details about the reference
+ implementation see
+ sd-readahead7.
+
+ If the reference implementation is used as
+ drop-in files and -DDISABLE_SYSTEMD is set during
+ compilation this function will always return 0 and
+ otherwise become a NOP.
@@ -170,7 +176,7 @@ sd_readahead("noreplay");
See Also
systemd1,
- sd_daemon7,
+ sd-readahead7,
daemon7