From: Theodore Ts'o <tytso@mit.edu>
Date: Fri, 24 Apr 2009 22:45:35 +0000 (-0400)
Subject: ext4: Do not try to validate extents on special files
X-Git-Tag: v2.6.30-rc4~24^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c4b5a614316c505922a522b2e35ba05ea3e08a7c;p=pandora-kernel.git

ext4: Do not try to validate extents on special files

The EXTENTS_FL flag should never be set on special files, but if it
is, don't bother trying to validate that the extents tree is valid,
since only files, directories, and non-fast symlinks will ever have an
extent data structure.  We perhaps should flag the filesystem as being
corrupted if we see a special file (named pipes, device nodes, Unix
domain sockets, etc.) with the EXTENTS_FL flag, but e2fsck doesn't
currently check this case, so we'll just ignore this for now, since
it's harmless.

Without this fix, a special device with the extents flag is flagged as
an error by the kernel, so it is impossible to access or delete the
inode, but e2fsck doesn't see it as a problem, leading to
confused/frustrated users.

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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