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Btrfs: fiemap support
author
Yehuda Sadeh
<yehuda@hq.newdream.net>
Wed, 21 Jan 2009 19:39:14 +0000
(14:39 -0500)
committer
Chris Mason
<chris.mason@oracle.com>
Wed, 21 Jan 2009 19:39:14 +0000
(14:39 -0500)
Now that bmap support is gone, this is the only way to get extent
mappings for userland. These are still not valid for IO, but they
can tell us if a file has holes or how much fragmentation there is.
Signed-off-by: Yehuda Sadeh <yehuda@hq.newdream.net>
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git.openpandora.org / pandora-kernel.git / commitdiff