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authorTheodore Ts'o <tytso@mit.edu>2014-02-12 12:16:04 -0500
committerTheodore Ts'o <tytso@mit.edu>2014-02-12 12:16:04 -0500
commit23301410972330c0ae9a8afc379ba2005e249cc6 (patch)
tree5931e3ca6be2f6d7b98525ce204f908c30a30936 /fs/efivarfs
parent30d29b119ef01776e0a301444ab24defe8d8bef3 (diff)
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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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