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-rw-r--r--Documentation/block/barrier.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/block/barrier.txt b/Documentation/block/barrier.txt
index 03971518b222..a272c3db8094 100644
--- a/Documentation/block/barrier.txt
+++ b/Documentation/block/barrier.txt
@@ -25,7 +25,7 @@ of the following three ways.
25i. For devices which have queue depth greater than 1 (TCQ devices) and 25i. For devices which have queue depth greater than 1 (TCQ devices) and
26support ordered tags, block layer can just issue the barrier as an 26support ordered tags, block layer can just issue the barrier as an
27ordered request and the lower level driver, controller and drive 27ordered request and the lower level driver, controller and drive
28itself are responsible for making sure that the ordering contraint is 28itself are responsible for making sure that the ordering constraint is
29met. Most modern SCSI controllers/drives should support this. 29met. Most modern SCSI controllers/drives should support this.
30 30
31NOTE: SCSI ordered tag isn't currently used due to limitation in the 31NOTE: SCSI ordered tag isn't currently used due to limitation in the
@@ -42,7 +42,7 @@ iii. Devices which have queue depth of 1. This is a degenerate case
42of ii. Just keeping issue order suffices. Ancient SCSI 42of ii. Just keeping issue order suffices. Ancient SCSI
43controllers/drives and IDE drives are in this category. 43controllers/drives and IDE drives are in this category.
44 44
452. Forced flushing to physcial medium 452. Forced flushing to physical medium
46 46
47Again, if you're not gonna do synchronization with disk drives (dang, 47Again, if you're not gonna do synchronization with disk drives (dang,
48it sounds even more appealing now!), the reason you use I/O barriers 48it sounds even more appealing now!), the reason you use I/O barriers
@@ -56,7 +56,7 @@ There are four cases,
56i. No write-back cache. Keeping requests ordered is enough. 56i. No write-back cache. Keeping requests ordered is enough.
57 57
58ii. Write-back cache but no flush operation. There's no way to 58ii. Write-back cache but no flush operation. There's no way to
59gurantee physical-medium commit order. This kind of devices can't to 59guarantee physical-medium commit order. This kind of devices can't to
60I/O barriers. 60I/O barriers.
61 61
62iii. Write-back cache and flush operation but no FUA (forced unit 62iii. Write-back cache and flush operation but no FUA (forced unit