From: Jeff Mahoney <jeffm@suse.com>
Date: Tue, 4 Oct 2011 03:22:31 +0000 (-0400)
Subject: btrfs: Add btrfs_panic()
X-Git-Tag: v3.4-rc1~22^2~13^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8c3429300181be44b30f9f017d53dc717da56caa;p=pandora-kernel.git

btrfs: Add btrfs_panic()

As part of the effort to eliminate BUG_ON as an error handling
technique, we need to determine which errors are actual logic errors,
which are on-disk corruption, and which are normal runtime errors
e.g. -ENOMEM.

Annotating these error cases is helpful to understand and report them.

This patch adds a btrfs_panic() routine that will either panic
or BUG depending on the new -ofatal_errors={panic,bug} mount option.
Since there are still so many BUG_ONs, it defaults to BUG for now but I
expect that to change once the error handling effort has made
significant progress.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
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