1 files changed, 16 insertions, 21 deletions

diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c
index b9c8589e05c2..a49dd8d4b069 100644
--- a/fs/xfs/linux-2.6/xfs_buf.c
+++ b/fs/xfs/linux-2.6/xfs_buf.c
@@ -725,15 +725,15 @@ xfs_buf_associate_memory(
 {
         int                     rval;
         int                     i = 0;
-        size_t                  ptr;
-        size_t                  end, end_cur;
-        off_t                   offset;
+        unsigned long           pageaddr;
+        unsigned long           offset;
+        size_t                  buflen;
         int                     page_count;
 
-        page_count = PAGE_CACHE_ALIGN(len) >> PAGE_CACHE_SHIFT;
-        offset = (off_t) mem - ((off_t)mem & PAGE_CACHE_MASK);
-        if (offset && (len > PAGE_CACHE_SIZE))
-                page_count++;
+        pageaddr = (unsigned long)mem & PAGE_CACHE_MASK;
+        offset = (unsigned long)mem - pageaddr;
+        buflen = PAGE_CACHE_ALIGN(len + offset);
+        page_count = buflen >> PAGE_CACHE_SHIFT;
 
         /* Free any previous set of page pointers */
         if (bp->b_pages)
@@ -747,22 +747,15 @@ xfs_buf_associate_memory(
                 return rval;
 
         bp->b_offset = offset;
-        ptr = (size_t) mem & PAGE_CACHE_MASK;
-        end = PAGE_CACHE_ALIGN((size_t) mem + len);
-        end_cur = end;
-        /* set up first page */
-        bp->b_pages[0] = mem_to_page(mem);
-
-        ptr += PAGE_CACHE_SIZE;
-        bp->b_page_count = ++i;
-        while (ptr < end) {
-                bp->b_pages[i] = mem_to_page((void *)ptr);
-                bp->b_page_count = ++i;
-                ptr += PAGE_CACHE_SIZE;
+
+        for (i = 0; i < bp->b_page_count; i++) {
+                bp->b_pages[i] = mem_to_page((void *)pageaddr);
+                pageaddr += PAGE_CACHE_SIZE;
         }
         bp->b_locked = 0;
 
-        bp->b_count_desired = bp->b_buffer_length = len;
+        bp->b_count_desired = len;
+        bp->b_buffer_length = buflen;
         bp->b_flags |= XBF_MAPPED;
 
         return 0;
@@ -1032,7 +1025,7 @@ xfs_buf_ioend(
         xfs_buf_t               *bp,
         int                     schedule)
 {
-        bp->b_flags &= ~(XBF_READ | XBF_WRITE);
+        bp->b_flags &= ~(XBF_READ | XBF_WRITE | XBF_READ_AHEAD);
         if (bp->b_error == 0)
                 bp->b_flags |= XBF_DONE;
 
@@ -1750,6 +1743,8 @@ xfsbufd(
 
         current->flags |= PF_MEMALLOC;
 
+        set_freezable();
+
         do {
                 if (unlikely(freezing(current))) {
                         set_bit(XBT_FORCE_SLEEP, &target->bt_flags);