Btrfs: add a "df" ioctl for btrfs

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df is a very loaded question in btrfs.  This gives us a way to get the per-space
usage information so we can tell exactly what is in use where.  This will help
us figure out ENOSPC problems, and help users better understand where their disk
space is going.

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Josef Bacik 2010-01-13 18:19:06 +00:00 • committed by Chris Mason

parent 2ac55d41b5

commit 1406e4327b

2 changed files with 58 additions and 1 deletions

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45

fs/btrfs/ioctl.c

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14

fs/btrfs/ioctl.h

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