Changes from v4: - Explicity prevent shadow entries from being added to radix trees for DAX mappings in patch 2. The only shadow entries that would be generated for DAX radix trees would be to track zero page mappings that were created for holes. These pages would receive minimal benefit from having shadow entries, and the choice to have only one type of exceptional entry in a given radix tree makes the logic simpler both in clear_exceptional_entry() and in the rest of DAX. (Jan) - Added Reviewed-by from Jan to patch 3. This series is built upon ext4/master. A working tree with this series applied can be found here: https://git.kernel.org/cgit/linux/kernel/git/zwisler/linux.git/log/?h=fsync_v5 Ross Zwisler (7): pmem: add wb_cache_pmem() to the PMEM API dax: support dirty DAX entries in radix tree mm: add find_get_entries_tag() dax: add support for fsync/sync ext2: call dax_pfn_mkwrite() for DAX fsync/msync ext4: call dax_pfn_mkwrite() for DAX fsync/msync xfs: call dax_pfn_mkwrite() for DAX fsync/msync arch/x86/include/asm/pmem.h | 11 +-- fs/block_dev.c | 3 +- fs/dax.c | 159 ++++++++++++++++++++++++++++++++++++++++++-- fs/ext2/file.c | 4 +- fs/ext4/file.c | 4 +- fs/inode.c | 1 + fs/xfs/xfs_file.c | 7 +- include/linux/dax.h | 7 ++ include/linux/fs.h | 1 + include/linux/pagemap.h | 3 + include/linux/pmem.h | 22 +++++- include/linux/radix-tree.h | 9 +++ mm/filemap.c | 84 ++++++++++++++++++++++- mm/truncate.c | 64 ++++++++++-------- mm/vmscan.c | 9 ++- 15 files changed, 339 insertions(+), 49 deletions(-) -- 2.5.0 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>