Add support for usage PG_writeback bit in lustre.

[fs/lustre-release.git] / lustre / llite / rw26.c

diff --git a/lustre/llite/rw26.c b/lustre/llite/rw26.c
index b7e4c5f..4852d43 100644 (file)
--- a/lustre/llite/rw26.c
+++ b/lustre/llite/rw26.c
@@ -292,58 +292,3 @@ struct address_space_operations ll_aops = {
         .releasepage    = ll_releasepage,
         .bmap           = NULL
 };
-
-static int wait_on_page_locked_range(struct address_space *mapping,
-                                     pgoff_t start, pgoff_t end)
-{
-        pgoff_t index;
-        struct page *page;
-        int ret = 0;
-
-        if (end < start)
-                return 0;
-
-        for(index = start; index < end; index++) {
-                page = find_get_page(mapping, index);
-                if (page == NULL)
-                        continue;
-
-                wait_on_page_locked(page);
-                if (PageError(page))
-                        ret = -EIO;
-                cond_resched();
-        }
-
-        /* Check for outstanding write errors */
-        if (test_and_clear_bit(AS_ENOSPC, &mapping->flags))
-                ret = -ENOSPC;
-        if (test_and_clear_bit(AS_EIO, &mapping->flags))
-                ret = -EIO;
-
-        return ret;
-}
-
-int ll_sync_page_range(struct inode *inode, struct address_space *mapping,
-                       loff_t pos, size_t count)
-{
-        pgoff_t start = pos >> CFS_PAGE_SHIFT;
-        pgoff_t end = (pos + count - 1) >> CFS_PAGE_SHIFT;
-        struct writeback_control wbc;
-        int ret;
-
-        wbc.sync_mode = WB_SYNC_ALL;
-        wbc.nr_to_write = mapping->nrpages * 2;
-#ifdef HAVE_WB_RANGE_START
-        wbc.range_start = start;
-        wbc.range_end = end;
-#else
-        wbc.start = start;
-        wbc.end = end;
-#endif
-        ret = generic_writepages(mapping, &wbc);
-
-        if (ret == 0)
-                ret = wait_on_page_locked_range(mapping, start, end);
-        return ret;
-}
-