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author | Takashi Iwai <tiwai@suse.de> | 2012-08-03 12:59:38 +0200 |
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committer | Takashi Iwai <tiwai@suse.de> | 2012-08-03 12:59:38 +0200 |
commit | d30a0d839a5a282e43353fee53d5dc70db5eceda (patch) | |
tree | 189a91615be3174a9ff8b20937359d11298433af /Documentation/block/queue-sysfs.txt | |
parent | ALSA: emu10k1: Avoid access to invalid pages when period=1 (diff) | |
parent | ALSA: isa: Move snd_legacy_find_free_ioport to initval.h (diff) | |
download | linux-dev-d30a0d839a5a282e43353fee53d5dc70db5eceda.tar.xz linux-dev-d30a0d839a5a282e43353fee53d5dc70db5eceda.zip |
Merge branch 'topic/next' into for-next
Diffstat (limited to 'Documentation/block/queue-sysfs.txt')
-rw-r--r-- | Documentation/block/queue-sysfs.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/block/queue-sysfs.txt b/Documentation/block/queue-sysfs.txt index d8147b336c35..6518a55273e7 100644 --- a/Documentation/block/queue-sysfs.txt +++ b/Documentation/block/queue-sysfs.txt @@ -38,6 +38,13 @@ read or write requests. Note that the total allocated number may be twice this amount, since it applies only to reads or writes (not the accumulated sum). +To avoid priority inversion through request starvation, a request +queue maintains a separate request pool per each cgroup when +CONFIG_BLK_CGROUP is enabled, and this parameter applies to each such +per-block-cgroup request pool. IOW, if there are N block cgroups, +each request queue may have upto N request pools, each independently +regulated by nr_requests. + read_ahead_kb (RW) ------------------ Maximum number of kilobytes to read-ahead for filesystems on this block |