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| author | Ira Weiny <ira.weiny@intel.com> | 2020-05-28 17:59:56 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-05-29 05:09:47 +0300 |
| commit | 6c0d077ff8200a7b8e7131ca8e25315dec243a60 (patch) | |
| tree | a49d7225d9485cde40cf91364e7709b74e541b5b /fs/ext4/verity.c | |
| parent | ff694ab60c29cfeba81b3d5068d3c908f22110ed (diff) | |
| download | linux-6c0d077ff8200a7b8e7131ca8e25315dec243a60.tar.xz | |
fs/ext4: Disallow verity if inode is DAX
Verity and DAX are incompatible. Changing the DAX mode due to a verity
flag change is wrong without a corresponding address_space_operations
update.
Make the 2 options mutually exclusive by returning an error if DAX was
set first.
(Setting DAX is already disabled if Verity is set first.)
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20200528150003.828793-3-ira.weiny@intel.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/verity.c')
| -rw-r--r-- | fs/ext4/verity.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/ext4/verity.c b/fs/ext4/verity.c index dc5ec724d889..f05a09fb2ae4 100644 --- a/fs/ext4/verity.c +++ b/fs/ext4/verity.c @@ -113,6 +113,9 @@ static int ext4_begin_enable_verity(struct file *filp) handle_t *handle; int err; + if (IS_DAX(inode)) + return -EINVAL; + if (ext4_verity_in_progress(inode)) return -EBUSY; |