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| author | Ira Weiny <ira.weiny@intel.com> | 2020-05-28 07:59:58 -0700 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2020-05-28 22:09:47 -0400 |
| commit | a8ab6d3885ef5e2300d683b79a9e1999403eefd9 (patch) | |
| tree | 13098aea5ebd1840fedf2fd7845e4bcc023bd1f3 /fs/ext4/ext4.h | |
| parent | fc626fe322f13ecdfac58cbfa6cfea797ed22623 (diff) | |
| download | linux-a8ab6d3885ef5e2300d683b79a9e1999403eefd9.tar.bz2 | |
fs/ext4: Update ext4_should_use_dax()
S_DAX should only be enabled when the underlying block device supports
dax.
Cache the underlying support for DAX in the super block and modify
ext4_should_use_dax() to check for device support prior to the over
riding mount option.
While we are at it change the function to ext4_should_enable_dax() as
this better reflects the ask as well as matches xfs.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Link: https://lore.kernel.org/r/20200528150003.828793-5-ira.weiny@intel.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 1a3daf2d18ef..0b4db9ce7756 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1979,6 +1979,7 @@ static inline bool ext4_has_incompat_features(struct super_block *sb) */ #define EXT4_FLAGS_RESIZING 0 #define EXT4_FLAGS_SHUTDOWN 1 +#define EXT4_FLAGS_BDEV_IS_DAX 2 static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi) { |