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authorQu Wenruo <quwenruo@cn.fujitsu.com>2014-01-06 09:58:26 +0800
committerChris Mason <clm@fb.com>2014-01-28 13:20:16 -0800
commitfc0ca9af180b91aad2fbf2fe3b16a12e1e05a760 (patch)
treec425161a10af5ea493cbcb2ee2a7010634689fce /Documentation/filesystems/btrfs.txt
parent842bef5891aaf13e2dede01d86397d810fde2dd8 (diff)
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btrfs: Add noautodefrag mount option.
Btrfs has autodefrag mount option but no pairing noautodefrag option, which makes it impossible to disable autodefrag without umount. Signed-off-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Reviewed-by: David Sterba <dsterba@suse.cz> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: Chris Mason <clm@fb.com>
Diffstat (limited to 'Documentation/filesystems/btrfs.txt')
-rw-r--r--Documentation/filesystems/btrfs.txt8
1 files changed, 5 insertions, 3 deletions
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt
index ce487a2a88f8..e87609a4e21c 100644
--- a/Documentation/filesystems/btrfs.txt
+++ b/Documentation/filesystems/btrfs.txt
@@ -46,10 +46,12 @@ Options with (*) are default options and will not show in the mount options.
bytes, optionally with a K, M, or G suffix, case insensitive.
Default is 1MB.
+ noautodefrag(*)
autodefrag
- Detect small random writes into files and queue them up for the
- defrag process. Works best for small files; Not well suited for
- large database workloads.
+ Disable/enable auto defragmentation.
+ Auto defragmentation detects small random writes into files and queue
+ them up for the defrag process. Works best for small files;
+ Not well suited for large database workloads.
check_int
check_int_data
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