tree 6da8d1bf7930592671a57880080315b5c98aad6f
parent 8b8b351ab60fa618c553440fe82221673d384bf7
author Darrick J. Wong <darrick.wong@oracle.com> 1553357429 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1555744071 +0200

ext4: prohibit fstrim in norecovery mode

[ Upstream commit 18915b5873f07e5030e6fb108a050fa7c71c59fb ]

The ext4 fstrim implementation uses the block bitmaps to find free space
that can be discarded.  If we haven't replayed the journal, the bitmaps
will be stale and we absolutely *cannot* use stale metadata to zap the
underlying storage.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>