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| author | Xiao Yang <yangx.jy@cn.fujitsu.com> | 2020-08-28 16:43:30 +0800 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-10-18 10:36:13 -0400 |
| commit | aa2f77920b743c44e02e2dc8474bbf8bd30007a2 (patch) | |
| tree | c907c64f8eb31baedc4f11d666243e0b5a2f0fd4 /fs/ext4/ext4.h | |
| parent | 15ed2851b0f42d0dc42d7172f1eaa0bea57ff807 (diff) | |
| download | linux-aa2f77920b743c44e02e2dc8474bbf8bd30007a2.tar.bz2 | |
ext4: disallow modifying DAX inode flag if inline_data has been set
inline_data is mutually exclusive to DAX so enabling both of them triggers
the following issue:
------------------------------------------
# mkfs.ext4 -F -O inline_data /dev/pmem1
...
# mount /dev/pmem1 /mnt
# echo 'test' >/mnt/file
# lsattr -l /mnt/file
/mnt/file Inline_Data
# xfs_io -c "chattr +x" /mnt/file
# xfs_io -c "lsattr -v" /mnt/file
[dax] /mnt/file
# umount /mnt
# mount /dev/pmem1 /mnt
# cat /mnt/file
cat: /mnt/file: Numerical result out of range
------------------------------------------
Fixes: b383a73f2b83 ("fs/ext4: Introduce DAX inode flag")
Signed-off-by: Xiao Yang <yangx.jy@cn.fujitsu.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Link: https://lore.kernel.org/r/20200828084330.15776-1-yangx.jy@cn.fujitsu.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index eafb92fe7735..d2a4b67319d4 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -492,7 +492,7 @@ struct flex_groups { /* Flags which are mutually exclusive to DAX */ #define EXT4_DAX_MUT_EXCL (EXT4_VERITY_FL | EXT4_ENCRYPT_FL |\ - EXT4_JOURNAL_DATA_FL) + EXT4_JOURNAL_DATA_FL | EXT4_INLINE_DATA_FL) /* Mask out flags that are inappropriate for the given type of inode. */ static inline __u32 ext4_mask_flags(umode_t mode, __u32 flags) |