btrfs: add mount option to set commit interval

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I'ts hardcoded to 30 seconds which is fine for most users. Higher values
defer data being synced to permanent storage with obvious consequences
when the system crashes. The upper bound is not forced, but a warning is
printed if it's more than 300 seconds (5 minutes).

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

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David Sterba 2013-08-01 18:14:52 +02:00 • committed by Chris Mason

parent 9ec7267751

commit 8b87dc17fb

3 changed files with 34 additions and 2 deletions

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3

fs/btrfs/ctree.h

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6

fs/btrfs/disk-io.c

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27

fs/btrfs/super.c

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