summaryrefslogtreecommitdiffstats
path: root/Documentation/block/capability.rst
diff options
context:
space:
mode:
authorLinus Torvalds2019-07-16 21:21:41 +0200
committerLinus Torvalds2019-07-16 21:21:41 +0200
commitc309b6f24222246c18a8b65d3950e6e755440865 (patch)
tree11893170f5c246bb0dee8066e85878af04162ab0 /Documentation/block/capability.rst
parentMerge tag 'xtensa-20190715' of git://github.com/jcmvbkbc/linux-xtensa (diff)
parentdocs: kbuild: fix build with pdf and fix some minor issues (diff)
downloadkernel-qcow2-linux-c309b6f24222246c18a8b65d3950e6e755440865.tar.gz
kernel-qcow2-linux-c309b6f24222246c18a8b65d3950e6e755440865.tar.xz
kernel-qcow2-linux-c309b6f24222246c18a8b65d3950e6e755440865.zip
Merge tag 'docs/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull rst conversion of docs from Mauro Carvalho Chehab: "As agreed with Jon, I'm sending this big series directly to you, c/c him, as this series required a special care, in order to avoid conflicts with other trees" * tag 'docs/v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (77 commits) docs: kbuild: fix build with pdf and fix some minor issues docs: block: fix pdf output docs: arm: fix a breakage with pdf output docs: don't use nested tables docs: gpio: add sysfs interface to the admin-guide docs: locking: add it to the main index docs: add some directories to the main documentation index docs: add SPDX tags to new index files docs: add a memory-devices subdir to driver-api docs: phy: place documentation under driver-api docs: serial: move it to the driver-api docs: driver-api: add remaining converted dirs to it docs: driver-api: add xilinx driver API documentation docs: driver-api: add a series of orphaned documents docs: admin-guide: add a series of orphaned documents docs: cgroup-v1: add it to the admin-guide book docs: aoe: add it to the driver-api book docs: add some documentation dirs to the driver-api book docs: driver-model: move it to the driver-api book docs: lp855x-driver.rst: add it to the driver-api book ...
Diffstat (limited to 'Documentation/block/capability.rst')
-rw-r--r--Documentation/block/capability.rst18
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/block/capability.rst b/Documentation/block/capability.rst
new file mode 100644
index 000000000000..2cf258d64bbe
--- /dev/null
+++ b/Documentation/block/capability.rst
@@ -0,0 +1,18 @@
+===============================
+Generic Block Device Capability
+===============================
+
+This file documents the sysfs file block/<disk>/capability
+
+capability is a hex word indicating which capabilities a specific disk
+supports. For more information on bits not listed here, see
+include/linux/genhd.h
+
+GENHD_FL_MEDIA_CHANGE_NOTIFY
+----------------------------
+
+Value: 4
+
+When this bit is set, the disk supports Asynchronous Notification
+of media change events. These events will be broadcast to user
+space via kernel uevent.