tree 7b1cefea7fb1588c6325a297d1f9f36b0e9f547e
parent 9a0dd42251439de635088b97533109a935864a84
author Jan Kara <jack@suse.cz> 1509550600 +0100
committer Dan Williams <dan.j.williams@intel.com> 1509715585 -0700

dax: Allow tuning whether dax_insert_mapping_entry() dirties entry

Currently we dirty radix tree entry whenever dax_insert_mapping_entry()
gets called for a write fault. With synchronous page faults we would
like to insert clean radix tree entry and dirty it only once we call
fdatasync() and update page tables to save some unnecessary cache
flushing. Add 'dirty' argument to dax_insert_mapping_entry() for that.

Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>