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Ira Weiny authored
We add 'always', 'never', and 'inode' (default). '-o dax' continues to operate the same which is equivalent to 'always'. This new functionality is limited to ext4 only. Specifically we introduce a 2nd DAX mount flag EXT4_MOUNT2_DAX_NEVER and set it and EXT4_MOUNT_DAX_ALWAYS appropriately for the mode. We also force EXT4_MOUNT2_DAX_NEVER if !CONFIG_FS_DAX. Finally, EXT4_MOUNT2_DAX_INODE is used solely to detect if the user specified that option for printing. Reviewed-by:
Jan Kara <jack@suse.cz> Signed-off-by:
Ira Weiny <ira.weiny@intel.com> Link: https://lore.kernel.org/r/20200528150003.828793-7-ira.weiny@intel.comSigned-off-by:
Theodore Ts'o <tytso@mit.edu>
9cb20f94