[XFS] If you mount an XFS filesystem with no mount options at all, then
[safe/jmp/linux-2.6] / fs / xfs / linux-2.6 / xfs_aops.c
index 1dd198e..e051952 100644 (file)
@@ -107,6 +107,18 @@ xfs_page_trace(
 #define xfs_page_trace(tag, inode, page, pgoff)
 #endif
 
+STATIC struct block_device *
+xfs_find_bdev_for_inode(
+       struct xfs_inode        *ip)
+{
+       struct xfs_mount        *mp = ip->i_mount;
+
+       if (XFS_IS_REALTIME_INODE(ip))
+               return mp->m_rtdev_targp->bt_bdev;
+       else
+               return mp->m_ddev_targp->bt_bdev;
+}
+
 /*
  * Schedule IO completion handling on a xfsdatad if this was
  * the final hold on this ioend. If we are asked to wait,
@@ -151,7 +163,7 @@ xfs_destroy_ioend(
 /*
  * Update on-disk file size now that data has been written to disk.
  * The current in-memory file size is i_size.  If a write is beyond
- * eof io_new_size will be the intended file size until i_size is
+ * eof i_new_size will be the intended file size until i_size is
  * updated.  If this write does not extend all the way to the valid
  * file size then restrict this update to the end of the write.
  */
@@ -173,14 +185,14 @@ xfs_setfilesize(
 
        xfs_ilock(ip, XFS_ILOCK_EXCL);
 
-       isize = MAX(ip->i_size, ip->i_iocore.io_new_size);
+       isize = MAX(ip->i_size, ip->i_new_size);
        isize = MIN(isize, bsize);
 
        if (ip->i_d.di_size < isize) {
                ip->i_d.di_size = isize;
                ip->i_update_core = 1;
                ip->i_update_size = 1;
-               mark_inode_dirty_sync(vn_to_inode(ioend->io_vnode));
+               mark_inode_dirty_sync(ioend->io_inode);
        }
 
        xfs_iunlock(ip, XFS_ILOCK_EXCL);
@@ -226,12 +238,13 @@ xfs_end_bio_unwritten(
 {
        xfs_ioend_t             *ioend =
                container_of(work, xfs_ioend_t, io_work);
+       struct xfs_inode        *ip = XFS_I(ioend->io_inode);
        xfs_off_t               offset = ioend->io_offset;
        size_t                  size = ioend->io_size;
 
        if (likely(!ioend->io_error)) {
-               xfs_bmap(XFS_I(ioend->io_inode), offset, size,
-                               BMAPI_UNWRITTEN, NULL, NULL);
+               if (!XFS_FORCED_SHUTDOWN(ip->i_mount))
+                       xfs_iomap_write_unwritten(ip, offset, size);
                xfs_setfilesize(ioend);
        }
        xfs_destroy_ioend(ioend);
@@ -304,7 +317,7 @@ xfs_map_blocks(
        xfs_inode_t             *ip = XFS_I(inode);
        int                     error, nmaps = 1;
 
-       error = xfs_bmap(ip, offset, count,
+       error = xfs_iomap(ip, offset, count,
                                flags, mapp, &nmaps);
        if (!error && (flags & (BMAPI_WRITE|BMAPI_ALLOCATE)))
                xfs_iflags_set(ip, XFS_IMODIFIED);
@@ -323,17 +336,13 @@ xfs_iomap_valid(
 /*
  * BIO completion handler for buffered IO.
  */
-STATIC int
+STATIC void
 xfs_end_bio(
        struct bio              *bio,
-       unsigned int            bytes_done,
        int                     error)
 {
        xfs_ioend_t             *ioend = bio->bi_private;
 
-       if (bio->bi_size)
-               return 1;
-
        ASSERT(atomic_read(&bio->bi_cnt) >= 1);
        ioend->io_error = test_bit(BIO_UPTODATE, &bio->bi_flags) ? 0 : error;
 
@@ -343,7 +352,6 @@ xfs_end_bio(
        bio_put(bio);
 
        xfs_finish_ioend(ioend, 0);
-       return 0;
 }
 
 STATIC void
@@ -407,10 +415,9 @@ xfs_start_page_writeback(
                clear_page_dirty_for_io(page);
        set_page_writeback(page);
        unlock_page(page);
-       if (!buffers) {
+       /* If no buffers on the page are to be written, finish it here */
+       if (!buffers)
                end_page_writeback(page);
-               wbc->pages_skipped++;   /* We didn't write this page */
-       }
 }
 
 static inline int bio_add_buffer(struct bio *bio, struct buffer_head *bh)
@@ -1329,7 +1336,7 @@ __xfs_get_blocks(
        offset = (xfs_off_t)iblock << inode->i_blkbits;
        ASSERT(bh_result->b_size >= (1 << inode->i_blkbits));
        size = bh_result->b_size;
-       error = xfs_bmap(XFS_I(inode), offset, size,
+       error = xfs_iomap(XFS_I(inode), offset, size,
                             create ? flags : BMAPI_READ, &iomap, &niomap);
        if (error)
                return -error;
@@ -1477,28 +1484,21 @@ xfs_vm_direct_IO(
 {
        struct file     *file = iocb->ki_filp;
        struct inode    *inode = file->f_mapping->host;
-       xfs_iomap_t     iomap;
-       int             maps = 1;
-       int             error;
+       struct block_device *bdev;
        ssize_t         ret;
 
-       error = xfs_bmap(XFS_I(inode), offset, 0,
-                               BMAPI_DEVICE, &iomap, &maps);
-       if (error)
-               return -error;
+       bdev = xfs_find_bdev_for_inode(XFS_I(inode));
 
        if (rw == WRITE) {
                iocb->private = xfs_alloc_ioend(inode, IOMAP_UNWRITTEN);
                ret = blockdev_direct_IO_own_locking(rw, iocb, inode,
-                       iomap.iomap_target->bt_bdev,
-                       iov, offset, nr_segs,
+                       bdev, iov, offset, nr_segs,
                        xfs_get_blocks_direct,
                        xfs_end_io_direct);
        } else {
                iocb->private = xfs_alloc_ioend(inode, IOMAP_READ);
                ret = blockdev_direct_IO_no_locking(rw, iocb, inode,
-                       iomap.iomap_target->bt_bdev,
-                       iov, offset, nr_segs,
+                       bdev, iov, offset, nr_segs,
                        xfs_get_blocks_direct,
                        xfs_end_io_direct);
        }
@@ -1509,13 +1509,18 @@ xfs_vm_direct_IO(
 }
 
 STATIC int
-xfs_vm_prepare_write(
+xfs_vm_write_begin(
        struct file             *file,
-       struct page             *page,
-       unsigned int            from,
-       unsigned int            to)
+       struct address_space    *mapping,
+       loff_t                  pos,
+       unsigned                len,
+       unsigned                flags,
+       struct page             **pagep,
+       void                    **fsdata)
 {
-       return block_prepare_write(page, from, to, xfs_get_blocks);
+       *pagep = NULL;
+       return block_write_begin(file, mapping, pos, len, flags, pagep, fsdata,
+                                                               xfs_get_blocks);
 }
 
 STATIC sector_t
@@ -1526,8 +1531,7 @@ xfs_vm_bmap(
        struct inode            *inode = (struct inode *)mapping->host;
        struct xfs_inode        *ip = XFS_I(inode);
 
-       vn_trace_entry(vn_from_inode(inode), __FUNCTION__,
-                       (inst_t *)__return_address);
+       xfs_itrace_entry(XFS_I(inode));
        xfs_rwlock(ip, VRWLOCK_READ);
        xfs_flush_pages(ip, (xfs_off_t)0, -1, 0, FI_REMAPF);
        xfs_rwunlock(ip, VRWLOCK_READ);
@@ -1570,8 +1574,8 @@ const struct address_space_operations xfs_address_space_operations = {
        .sync_page              = block_sync_page,
        .releasepage            = xfs_vm_releasepage,
        .invalidatepage         = xfs_vm_invalidatepage,
-       .prepare_write          = xfs_vm_prepare_write,
-       .commit_write           = generic_commit_write,
+       .write_begin            = xfs_vm_write_begin,
+       .write_end              = generic_write_end,
        .bmap                   = xfs_vm_bmap,
        .direct_IO              = xfs_vm_direct_IO,
        .migratepage            = buffer_migrate_page,