Btrfs: fiemap support

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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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Yehuda Sadeh 2009-01-21 14:39:14 -05:00 • committed by Chris Mason

parent 35054394c4

commit 1506fcc818

3 changed files with 101 additions and 0 deletions

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92

fs/btrfs/extent_io.c

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2

fs/btrfs/extent_io.h

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7

fs/btrfs/inode.c

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