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Diffstat (limited to 'Documentation/feature-removal-schedule.txt')
-rw-r--r-- | Documentation/feature-removal-schedule.txt | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt index 498ff31f3aa1..5c8695a3d139 100644 --- a/Documentation/feature-removal-schedule.txt +++ b/Documentation/feature-removal-schedule.txt | |||
@@ -328,21 +328,20 @@ Who: Adrian Bunk <bunk@stusta.de> | |||
328 | 328 | ||
329 | --------------------------- | 329 | --------------------------- |
330 | 330 | ||
331 | What: libata.spindown_compat module parameter | 331 | What: libata spindown skipping and warning |
332 | When: Dec 2008 | 332 | When: Dec 2008 |
333 | Why: halt(8) synchronizes caches for and spins down libata disks | 333 | Why: Some halt(8) implementations synchronize caches for and spin |
334 | because libata didn't use to spin down disk on system halt | 334 | down libata disks because libata didn't use to spin down disk on |
335 | (only synchronized caches). | 335 | system halt (only synchronized caches). |
336 | Spin down on system halt is now implemented and can be tested | 336 | Spin down on system halt is now implemented. sysfs node |
337 | using sysfs node /sys/class/scsi_disk/h:c:i:l/manage_start_stop. | 337 | /sys/class/scsi_disk/h:c:i:l/manage_start_stop is present if |
338 | spin down support is available. | ||
338 | Because issuing spin down command to an already spun down disk | 339 | Because issuing spin down command to an already spun down disk |
339 | makes some disks spin up just to spin down again, the old | 340 | makes some disks spin up just to spin down again, libata tracks |
340 | behavior needs to be maintained till userspace tool is updated | 341 | device spindown status to skip the extra spindown command and |
341 | to check the sysfs node and not to spin down disks with the | 342 | warn about it. |
342 | node set to one. | 343 | This is to give userspace tools the time to get updated and will |
343 | This module parameter is to give userspace tool the time to | 344 | be removed after userspace is reasonably updated. |
344 | get updated and should be removed after userspace is | ||
345 | reasonably updated. | ||
346 | Who: Tejun Heo <htejun@gmail.com> | 345 | Who: Tejun Heo <htejun@gmail.com> |
347 | 346 | ||
348 | --------------------------- | 347 | --------------------------- |