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| H A D | super.c | diff 23301410972330c0ae9a8afc379ba2005e249cc6 Wed Feb 12 18:16:04 CET 2014 Theodore Ts'o <tytso@mit.edu> ext4: don't try to modify s_flags if the the file system is read-only
If an ext4 file system is created by some tool other than mke2fs
(perhaps by someone who has a pathalogical fear of the GPL) that
doesn't set one or the other of the EXT2_FLAGS_{UN}SIGNED_HASH flags,
and that file system is then mounted read-only, don't try to modify
the s_flags field. Otherwise, if dm_verity is in use, the superblock
will change, causing an dm_verity failure.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
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