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2020-12-08Documentation: fix multiple typos found in the admin-guide subdirectoryAndrew Klychkov1-1/+1
Fix thirty five typos in dm-integrity.rst, dm-raid.rst, dm-zoned.rst, verity.rst, writecache.rst, tsx_async_abort.rst, md.rst, bttv.rst, dvb_references.rst, frontend-cardlist.rst, gspca-cardlist.rst, ipu3.rst, remote-controller.rst, mm/index.rst, numaperf.rst, userfaultfd.rst, module-signing.rst, imx-ddr.rst, intel-speed-select.rst, intel_pstate.rst, ramoops.rst, abi.rst, kernel.rst, vm.rst Signed-off-by: Andrew Klychkov <andrew.a.klychkov@gmail.com> Link: https://lore.kernel.org/r/20201204072848.GA49895@spblnx124.lan Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2020-08-03md: register new md sysfs file 'uuid' read-onlySebastian Parschauer1-0/+4
Report the UUID of the MD array in the following format: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx This is useful if you don't want to wait for udev to identify array. And it is also easy for script to monitor it with the format. Signed-off-by: Sebastian Parschauer <s.parschauer@gmx.de> [Guoqing: mention the change in md.rst] Signed-off-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2020-06-08Replace HTTP links with HTTPS ones: documentationAlexander A. Klimov1-1/+1
Rationale: Reduces attack surface on kernel devs opening the links for MITM as HTTPS traffic is much harder to manipulate. Deterministic algorithm: For each file: For each line: If doesn't contain `\bxmlns\b`: For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`: If both the HTTP and HTTPS versions return 200 OK and serve the same content: Replace HTTP with HTTPS. Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de> Link: https://lore.kernel.org/r/20200526060544.25127-1-grandmaster@al2klimov.de Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-03-12raid5: set write hint for PPLMariusz Dabrowski1-0/+3
When the Partial Parity Log is enabled, circular buffer is used to store PPL data. Each write to RAID device causes overwrite of data in this buffer so some write_hint can be set to those request to help drives handle garbage collection. This patch adds new sysfs attribute which can be used to specify which write_hint should be assigned to PPL. Acked-by: Guoqing Jiang <gqjiang@suse.com> Signed-off-by: Mariusz Dabrowski <mariusz.dabrowski@intel.com> Signed-off-by: Song Liu <songliubraving@fb.com>
2017-03-17md: add sysfs entries for PPLArtur Paszkiewicz1-3/+29
Add 'consistency_policy' attribute for array. It indicates how the array maintains consistency in case of unexpected shutdown. Add 'ppl_sector' and 'ppl_size' for rdev, which describe the location and size of the PPL space on the device. They can't be changed for active members if the array is started and PPL is enabled, so in the setter functions only basic checks are performed. More checks are done in ppl_validate_rdev() when starting the log. These attributes are writable to allow enabling PPL for external metadata arrays and (later) to enable/disable PPL for a running array. Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Signed-off-by: Shaohua Li <shli@fb.com>
2017-02-13MD: add doc for raid5-cacheShaohua Li1-0/+5
I'm starting document of the raid5-cache feature. Please note this is a kernel doc instead of a mdadm manual, so I don't add the details about how to use the feature in mdadm side. Cc: NeilBrown <neilb@suse.com> Reviewed-by: Song Liu <songliubraving@fb.com> Signed-off-by: Shaohua Li <shli@fb.com>
2016-10-24docs-rst: create an user's manual bookMauro Carvalho Chehab1-0/+727
Place README, REPORTING-BUGS, SecurityBugs and kernel-parameters on an user's manual book. As we'll be numbering the user's manual, remove the manual numbering from SecurityBugs. Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>