summaryrefslogtreecommitdiff
path: root/Documentation/bcache.txt
diff options
context:
space:
mode:
authorArnd Bergmann <arnd@arndb.de>2013-06-20 02:06:36 +0200
committerArnd Bergmann <arnd@arndb.de>2013-06-20 02:06:36 +0200
commitd5a51af940efec07c969bdb5fe478bb518116404 (patch)
tree26291e51122081d929e3cac3d441ee5efbfa75d6 /Documentation/bcache.txt
parenta44bde66bec168889c95bd1d0d15834b02387901 (diff)
parentd75f3d92e86e65b3cb9725e65f7278cc303511db (diff)
Merge tag 'mxs-dt-3.11' of git://git.linaro.org/people/shawnguo/linux-2.6 into next/dt
From Shawn Guo: mxs device tree changes for 3.11: * A couple of new board support, cfa10055 and cfa10057 * A few updates on cfa10036 device tree source * Some auart pinctrl data addition * Adopt soc bus infrastructure for mach-mxs * tag 'mxs-dt-3.11' of git://git.linaro.org/people/shawnguo/linux-2.6: ARM: mxs: dt: Add Crystalfontz CFA-10057 device tree ARM: mxs: dt: Add the Crystalfontz CFA-10055 device tree ARM: cfa10049: Switch the chip select pin of the LCD controller ARM: cfa10036: Add USB0 OTG port ARM: dts: apf28dev: Add touchscreen support for APF28dev ARM: mxs: Fix UARTs on M28EVK ARM: cfa10036: dt: Change i2c0 clock frequency ARM: dts: cfa10036: Change the OLED display to SSD1306 ARM: mx28: add auart4 2 pins pinmux to imx28.dtsi ARM: mx28: add auart3 2 pins pinmux to imx28.dtsi ARM: mx28: add auart2 2 pins pinmux to imx28.dtsi ARM: mxs: Use soc bus infrastructure ARM: dts: mx28: Adjust the digctl compatible string ARM: mxs: Remove init_irq declaration in machine description Includes an update to 3.10-rc6 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation/bcache.txt')
-rw-r--r--Documentation/bcache.txt12
1 files changed, 9 insertions, 3 deletions
diff --git a/Documentation/bcache.txt b/Documentation/bcache.txt
index 77db8809bd96..b3a7e7d384f6 100644
--- a/Documentation/bcache.txt
+++ b/Documentation/bcache.txt
@@ -319,7 +319,10 @@ cache<0..n>
Symlink to each of the cache devices comprising this cache set.
cache_available_percent
- Percentage of cache device free.
+ Percentage of cache device which doesn't contain dirty data, and could
+ potentially be used for writeback. This doesn't mean this space isn't used
+ for clean cached data; the unused statistic (in priority_stats) is typically
+ much lower.
clear_stats
Clears the statistics associated with this cache
@@ -423,8 +426,11 @@ nbuckets
Total buckets in this cache
priority_stats
- Statistics about how recently data in the cache has been accessed. This can
- reveal your working set size.
+ Statistics about how recently data in the cache has been accessed.
+ This can reveal your working set size. Unused is the percentage of
+ the cache that doesn't contain any data. Metadata is bcache's
+ metadata overhead. Average is the average priority of cache buckets.
+ Next is a list of quantiles with the priority threshold of each.
written
Sum of all data that has been written to the cache; comparison with