dax,ext2: replace xip_truncate_page with dax_truncate_page

It takes a get_block parameter just like nobh_truncate_page() and
block_truncate_page()

Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andreas Dilger <andreas.dilger@intel.com>
Cc: Boaz Harrosh <boaz@plexistor.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 40 deletions

diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c
index 59fb387b2238..8e3f99b61959 100644
--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -22,43 +22,3 @@
 #include <asm/tlbflush.h>
 #include <asm/io.h>
 
-/*
- * truncate a page used for execute in place
- * functionality is analog to block_truncate_page but does use get_xip_mem
- * to get the page instead of page cache
- */
-int
-xip_truncate_page(struct address_space *mapping, loff_t from)
-{
-        pgoff_t index = from >> PAGE_CACHE_SHIFT;
-        unsigned offset = from & (PAGE_CACHE_SIZE-1);
-        unsigned blocksize;
-        unsigned length;
-        void *xip_mem;
-        unsigned long xip_pfn;
-        int err;
-
-        BUG_ON(!mapping->a_ops->get_xip_mem);
-
-        blocksize = 1 << mapping->host->i_blkbits;
-        length = offset & (blocksize - 1);
-
-        /* Block boundary? Nothing to do */
-        if (!length)
-                return 0;
-
-        length = blocksize - length;
-
-        err = mapping->a_ops->get_xip_mem(mapping, index, 0,
-                                                &xip_mem, &xip_pfn);
-        if (unlikely(err)) {
-                if (err == -ENODATA)
-                        /* Hole? No need to truncate */
-                        return 0;
-                else
-                        return err;
-        }
-        memset(xip_mem + offset, 0, length);
-        return 0;
-}
-EXPORT_SYMBOL_GPL(xip_truncate_page);