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[PATCH v4 7/7] dax: fix a comment in dax_zero_page_range and dax_truncate_page

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  [PATCH v4 7/7] dax: fix a comment in dax_zero_page_range and dax_truncate_page Vishal Verma <vishal.l.verma@intel.com> - 2016-04-28 23:20 +0200

#1390547 — [PATCH v4 7/7] dax: fix a comment in dax_zero_page_range and dax_truncate_page

The distinction between PAGE_SIZE and PAGE_CACHE_SIZE was removed in

09cbfea mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release}
macros

The comments for the above functions described a distinction between
those, that is now redundant, so remove those paragraphs

Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
---
 fs/dax.c | 12 ------------
 1 file changed, 12 deletions(-)

diff --git a/fs/dax.c b/fs/dax.c
index d8c974e..b8fa85a 100644
--- a/fs/dax.c
+++ b/fs/dax.c
@@ -1221,12 +1221,6 @@ static bool dax_range_is_aligned(struct block_device *bdev,
  * page in a DAX file.  This is intended for hole-punch operations.  If
  * you are truncating a file, the helper function dax_truncate_page() may be
  * more convenient.
- *
- * We work in terms of PAGE_SIZE here for commonality with
- * block_truncate_page(), but we could go down to PAGE_SIZE if the filesystem
- * took care of disposing of the unnecessary blocks.  Even if the filesystem
- * block size is smaller than PAGE_SIZE, we have to zero the rest of the page
- * since the file might be mmapped.
  */
 int dax_zero_page_range(struct inode *inode, loff_t from, unsigned length,
 							get_block_t get_block)
@@ -1279,12 +1273,6 @@ EXPORT_SYMBOL_GPL(dax_zero_page_range);
  *
  * Similar to block_truncate_page(), this function can be called by a
  * filesystem when it is truncating a DAX file to handle the partial page.
- *
- * We work in terms of PAGE_SIZE here for commonality with
- * block_truncate_page(), but we could go down to PAGE_SIZE if the filesystem
- * took care of disposing of the unnecessary blocks.  Even if the filesystem
- * block size is smaller than PAGE_SIZE, we have to zero the rest of the page
- * since the file might be mmapped.
  */
 int dax_truncate_page(struct inode *inode, loff_t from, get_block_t get_block)
 {
-- 
2.5.5

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