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| author |   Jiro SEKIBA <jir@unicus.jp> | 2010-01-30 18:06:35 +0900 |
|---|---|---|
| committer |   Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> | 2010-02-13 12:26:02 +0900 |
| commit | e902ec9906e844f4613fa6190c6fa65f162dc86e (patch) | |
| tree | ee0ea829ae04a30fb01c119f050a3967304e55ba /Documentation/filesystems | |
| parent | Linux 2.6.33-rc8 (diff) | |
| download | linux-dev-e902ec9906e844f4613fa6190c6fa65f162dc86e.tar.xz linux-dev-e902ec9906e844f4613fa6190c6fa65f162dc86e.zip | |
nilfs2: issue discard request after cleaning segments
This adds a function to send discard requests for given array of
segment numbers, and calls the function when garbage collection
succeeded.
Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/nilfs2.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt index 839efd8a8a8c..cf6d0d85ca82 100644 --- a/Documentation/filesystems/nilfs2.txt +++ b/Documentation/filesystems/nilfs2.txt @@ -74,6 +74,9 @@ norecovery Disable recovery of the filesystem on mount. This disables every write access on the device for read-only mounts or snapshots. This option will fail for r/w mounts on an unclean volume. +discard Issue discard/TRIM commands to the underlying block + device when blocks are freed. This is useful for SSD + devices and sparse/thinly-provisioned LUNs. NILFS2 usage ============ |