09 Sep, 2015

1 commit

• 844f35db1   dax: add huge page fault support ... Browse Code »

  This is the support code for DAX-enabled filesystems to allow them to
  provide huge pages in response to faults.

  Signed-off-by: Matthew Wilcox
  Cc: Hillf Danton
  Cc: "Kirill A. Shutemov"
  Cc: Theodore Ts'o
  Cc: Jan Kara
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Matthew Wilcox

  2015-09-09 06:35:28 +0800  

05 Jul, 2015

1 commit

• 44f4c054c   dax: Add block size note to documentation ... Browse Code »

  For block devices which are small enough, mkfs will default to creating
  a filesystem with block sizes smaller than page size.

  Signed-off-by: Matthew Wilcox
  Signed-off-by: Al Viro

  Matthew Wilcox

  2015-07-05 03:56:56 +0800  

17 Feb, 2015

4 commits

• d92576f11   dax: does not work correctly with virtual aliasing caches ... Browse Code »

  The DAX code accesses the underlying storage through the kernel's linear
  mapping, which may not be cache-coherent with user mappings on ARM, MIPS
  or SPARC. Temporarily disable the DAX code until this problem is
  resolved.

  The original XIP code also had this problem, but it was never noticed.

  Signed-off-by: Matthew Wilcox
  Cc: Andreas Dilger
  Cc: Boaz Harrosh
  Cc: Christoph Hellwig
  Cc: Dave Chinner
  Cc: Jan Kara
  Cc: Jens Axboe
  Cc: Kirill A. Shutemov
  Cc: Mathieu Desnoyers
  Cc: Randy Dunlap
  Cc: Ross Zwisler
  Cc: Theodore Ts'o
  Cc: Ralf Baechle
  Cc: Russell King
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Matthew Wilcox

  2015-02-17 09:56:04 +0800  
• 923ae0ff9   ext4: add DAX functionality ... Browse Code »

  This is a port of the DAX functionality found in the current version of
  ext2.

  [matthew.r.wilcox@intel.com: heavily tweaked]
  [akpm@linux-foundation.org: remap_pages went away]
  Signed-off-by: Ross Zwisler
  Reviewed-by: Andreas Dilger
  Signed-off-by: Matthew Wilcox
  Cc: Boaz Harrosh
  Cc: Christoph Hellwig
  Cc: Dave Chinner
  Cc: Jan Kara
  Cc: Jens Axboe
  Cc: Kirill A. Shutemov
  Cc: Mathieu Desnoyers
  Cc: Randy Dunlap
  Cc: Theodore Ts'o
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Ross Zwisler

  2015-02-17 09:56:04 +0800  
• 25726bc15   dax: add dax_zero_page_range ... Browse Code »

  This new function allows us to support hole-punch for DAX files by zeroing
  a partial page, as opposed to the dax_truncate_page() function which can
  only truncate to the end of the page. Reimplement dax_truncate_page() to
  call dax_zero_page_range().

  [ross.zwisler@linux.intel.com: ported to 3.13-rc2]
  [akpm@linux-foundation.org: fix typos in comments]
  Signed-off-by: Matthew Wilcox
  Signed-off-by: Ross Zwisler
  Cc: Andreas Dilger
  Cc: Boaz Harrosh
  Cc: Christoph Hellwig
  Cc: Dave Chinner
  Cc: Jan Kara
  Cc: Jens Axboe
  Cc: Kirill A. Shutemov
  Cc: Mathieu Desnoyers
  Cc: Randy Dunlap
  Cc: Theodore Ts'o
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Matthew Wilcox

  2015-02-17 09:56:04 +0800  
• 95ec8daba   dax: replace XIP documentation with DAX documentation ... Browse Code »

  Based on the original XIP documentation, this documents the current state
  of affairs, and includes instructions on how users can enable DAX if their
  devices and kernel support it.

  Signed-off-by: Matthew Wilcox
  Reviewed-by: Randy Dunlap
  Cc: Andreas Dilger
  Cc: Boaz Harrosh
  Cc: Christoph Hellwig
  Cc: Dave Chinner
  Cc: Jan Kara
  Cc: Jens Axboe
  Cc: Kirill A. Shutemov
  Cc: Mathieu Desnoyers
  Cc: Ross Zwisler
  Cc: Theodore Ts'o
  Signed-off-by: Andrew Morton
  Signed-off-by: Linus Torvalds

  Matthew Wilcox

  2015-02-17 09:56:03 +0800