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null_blk: add an usage for shared tags in documentation

PATCH In review Minwoo Im 2 participants 2 messages Nov 7, 2017

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Share & tools
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Minwoo Im

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#0 lore raw

PATCH 1/1 null_blk: add an usage for shared tags in documentation

add usage explanation for a shared_tags of
commit 82f402fefa50f1675bf918bcd009981bd6b30ac8 ("null_blk: add support for shared tags") to this documentation.

Signed-off-by Minwoo Im <[email protected]>
---
 Documentation/block/null_blk.txt | 5 +++++
 1 file changed, 5 insertions(+)
Documentation/block/null_blk.txt +5 -0
index b7161c8..e1d1aa9 100644
@@ -77,3 +77,8 @@ use_lightnvm=[0/1]: Default: 0
 no_sched=[0/1]: Default: 0
   0: nullb* use default blk-mq io scheduler.
   1: nullb* doesn't use io scheduler.
+
+shared_tags=[0/1]: Default: 0
+  0: Tag set is not shared.
+  1: Tag set shared between devices for blk-mq.
+     Requires nr_devices to be bigger than 1.
Signature · 1 line
2.7.4
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#1 lore raw
Quoted 14 lines · Minwoo Im

add usage explanation for a shared_tags of
commit 82f402fefa50f1675bf918bcd009981bd6b30ac8 ("null_blk: add support for shared tags") to this documentation.

Signed-off-by Minwoo Im <[email protected]>
---
 Documentation/block/null_blk.txt | 5 +++++
 1 file changed, 5 insertions(+)
Documentation/block/null_blk.txt +0 -0
index b7161c8..e1d1aa9 100644

Documentation/block/null_blk.txt use_lightnvm=[0/1]: Default: 0 · line 84

Quoted 8 lines
Documentation/block/null_blk.txt +5 -0
@@ -77,3 +77,8 @@ use_lightnvm=[0/1]: Default: 0
 no_sched=[0/1]: Default: 0
   0: nullb* use default blk-mq io scheduler.
   1: nullb* doesn't use io scheduler.
+
+shared_tags=[0/1]: Default: 0
+  0: Tag set is not shared.
+  1: Tag set shared between devices for blk-mq.
+     Requires nr_devices to be bigger than 1.

I have added this, but reworded slightly.

Signature · 1 line
Jens Axboe