NTFS: Fix several occurences of a bug where we would perform 'var & ~const'

      with a 64-bit variable and a int, i.e. 32-bit, constant.  This causes
      the higher order 32-bits of the 64-bit variable to be zeroed.  To fix
      this cast the 'const' to the same 64-bit type as 'var'.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/ntfs/dir.c b/fs/ntfs/dir.c
index a56ca1821eed..46779471c542 100644
--- a/fs/ntfs/dir.c
+++ b/fs/ntfs/dir.c
@@ -1308,7 +1308,8 @@ find_next_index_buffer:
         ntfs_debug("Handling index buffer 0x%llx.",
                         (unsigned long long)bmp_pos + cur_bmp_pos);
         /* If the current index buffer is in the same page we reuse the page. */
-        if ((prev_ia_pos & PAGE_CACHE_MASK) != (ia_pos & PAGE_CACHE_MASK)) {
+        if ((prev_ia_pos & (s64)PAGE_CACHE_MASK) !=
+                        (ia_pos & (s64)PAGE_CACHE_MASK)) {
                 prev_ia_pos = ia_pos;
                 if (likely(ia_page != NULL)) {
                         unlock_page(ia_page);