1 files changed, 0 insertions, 114 deletions

diff --git a/fs/buffer.c b/fs/buffer.c
index 249b83fafe48..cabc045f483d 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3427,120 +3427,6 @@ int bh_submit_read(struct buffer_head *bh)
 }
 EXPORT_SYMBOL(bh_submit_read);
 
-/*
- * Seek for SEEK_DATA / SEEK_HOLE within @page, starting at @lastoff.
- *
- * Returns the offset within the file on success, and -ENOENT otherwise.
- */
-static loff_t
-page_seek_hole_data(struct page *page, loff_t lastoff, int whence)
-{
-        loff_t offset = page_offset(page);
-        struct buffer_head *bh, *head;
-        bool seek_data = whence == SEEK_DATA;
-
-        if (lastoff < offset)
-                lastoff = offset;
-
-        bh = head = page_buffers(page);
-        do {
-                offset += bh->b_size;
-                if (lastoff >= offset)
-                        continue;
-
-                /*
-                 * Unwritten extents that have data in the page cache covering
-                 * them can be identified by the BH_Unwritten state flag.
-                 * Pages with multiple buffers might have a mix of holes, data
-                 * and unwritten extents - any buffer with valid data in it
-                 * should have BH_Uptodate flag set on it.
-                 */
-
-                if ((buffer_unwritten(bh) || buffer_uptodate(bh)) == seek_data)
-                        return lastoff;
-
-                lastoff = offset;
-        } while ((bh = bh->b_this_page) != head);
-        return -ENOENT;
-}
-
-/*
- * Seek for SEEK_DATA / SEEK_HOLE in the page cache.
- *
- * Within unwritten extents, the page cache determines which parts are holes
- * and which are data: unwritten and uptodate buffer heads count as data;
- * everything else counts as a hole.
- *
- * Returns the resulting offset on successs, and -ENOENT otherwise.
- */
-loff_t
-page_cache_seek_hole_data(struct inode *inode, loff_t offset, loff_t length,
-                          int whence)
-{
-        pgoff_t index = offset >> PAGE_SHIFT;
-        pgoff_t end = DIV_ROUND_UP(offset + length, PAGE_SIZE);
-        loff_t lastoff = offset;
-        struct pagevec pvec;
-
-        if (length <= 0)
-                return -ENOENT;
-
-        pagevec_init(&pvec);
-
-        do {
-                unsigned nr_pages, i;
-
-                nr_pages = pagevec_lookup_range(&pvec, inode->i_mapping, &index,
-                                                end - 1);
-                if (nr_pages == 0)
-                        break;
-
-                for (i = 0; i < nr_pages; i++) {
-                        struct page *page = pvec.pages[i];
-
-                        /*
-                         * At this point, the page may be truncated or
-                         * invalidated (changing page->mapping to NULL), or
-                         * even swizzled back from swapper_space to tmpfs file
-                         * mapping.  However, page->index will not change
-                         * because we have a reference on the page.
-                         *
-                         * If current page offset is beyond where we've ended,
-                         * we've found a hole.
-                         */
-                        if (whence == SEEK_HOLE &&
-                            lastoff < page_offset(page))
-                                goto check_range;
-
-                        lock_page(page);
-                        if (likely(page->mapping == inode->i_mapping) &&
-                            page_has_buffers(page)) {
-                                lastoff = page_seek_hole_data(page, lastoff, whence);
-                                if (lastoff >= 0) {
-                                        unlock_page(page);
-                                        goto check_range;
-                                }
-                        }
-                        unlock_page(page);
-                        lastoff = page_offset(page) + PAGE_SIZE;
-                }
-                pagevec_release(&pvec);
-        } while (index < end);
-
-        /* When no page at lastoff and we are not done, we found a hole. */
-        if (whence != SEEK_HOLE)
-                goto not_found;
-
-check_range:
-        if (lastoff < offset + length)
-                goto out;
-not_found:
-        lastoff = -ENOENT;
-out:
-        pagevec_release(&pvec);
-        return lastoff;
-}
-
 void __init buffer_init(void)
 {
         unsigned long nrpages;