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Btrfs: Add fallocate support v2

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This patch updates btrfs-progs for fallocate support.

fallocate is a little different in Btrfs because we need to tell the
COW system that a given preallocated extent doesn't need to be
cow'd as long as there are no snapshots of it.  This leverages the
-o nodatacow checks.
 
Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
This commit is contained in:
Yan Zheng 2008-10-30 14:25:28 -04:00 • committed by Chris Mason
commit d899e05215
10 changed files with 563 additions and 117 deletions
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