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(parent: 83e3e89) | patch
ext4: prohibit fstrim in norecovery mode
authorDarrick J. Wong <darrick.wong@oracle.com>
Sat, 23 Mar 2019 16:10:29 +0000 (12:10 -0400)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sat, 20 Apr 2019 07:15:59 +0000 (09:15 +0200)
commit6fd66bec6d6a7e52bcb969dc35b67103ed717664
treedbfda7495f84229ca623b87fe7e09dfdb147e824tree | snapshot
parent83e3e89d66393f0209d4d236f0663a0de7b1927fcommit | diff
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>
fs/ext4/ioctl.c diff | blob | history
Domain: System / Kernel;