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authorTejun Heo <tj@kernel.org>2009-07-03 18:13:18 -0400
committerTejun Heo <tj@kernel.org>2009-07-03 18:13:18 -0400
commitc43768cbb7655ea5ff782ae250f6e2ef4297cf98 (patch)
tree3982e41dde3eecaa3739a5d1a8ed18d04bd74f01 /Documentation/block/data-integrity.txt
parent1a8dd307cc0a2119be4e578c517795464e6dabba (diff)
parent746a99a5af60ee676afa2ba469ccd1373493c7e7 (diff)
Merge branch 'master' into for-next
Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix changes. As alpha in percpu tree uses 'weak' attribute instead of inline assembly, there's no need for __used attribute. Conflicts: arch/alpha/include/asm/percpu.h arch/mn10300/kernel/vmlinux.lds.S include/linux/percpu-defs.h
Diffstat (limited to 'Documentation/block/data-integrity.txt')
-rw-r--r--Documentation/block/data-integrity.txt4
1 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/block/data-integrity.txt b/Documentation/block/data-integrity.txt
index e8ca040ba2cf..2d735b0ae383 100644
--- a/Documentation/block/data-integrity.txt
+++ b/Documentation/block/data-integrity.txt
@@ -50,7 +50,7 @@ encouraged them to allow separation of the data and integrity metadata
50scatter-gather lists. 50scatter-gather lists.
51 51
52The controller will interleave the buffers on write and split them on 52The controller will interleave the buffers on write and split them on
53read. This means that the Linux can DMA the data buffers to and from 53read. This means that Linux can DMA the data buffers to and from
54host memory without changes to the page cache. 54host memory without changes to the page cache.
55 55
56Also, the 16-bit CRC checksum mandated by both the SCSI and SATA specs 56Also, the 16-bit CRC checksum mandated by both the SCSI and SATA specs
@@ -66,7 +66,7 @@ software RAID5).
66 66
67The IP checksum is weaker than the CRC in terms of detecting bit 67The IP checksum is weaker than the CRC in terms of detecting bit
68errors. However, the strength is really in the separation of the data 68errors. However, the strength is really in the separation of the data
69buffers and the integrity metadata. These two distinct buffers much 69buffers and the integrity metadata. These two distinct buffers must
70match up for an I/O to complete. 70match up for an I/O to complete.
71 71
72The separation of the data and integrity metadata buffers as well as 72The separation of the data and integrity metadata buffers as well as