NFS: Clean up nfs_flush_inode()

Make it take a struct writepages argument, and rename to
nfs_flush_mapping().

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 4948dc1..1d72096 100644 (file)
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -79,8 +79,7 @@ static struct nfs_page * nfs_update_request(struct nfs_open_context*,
                                            unsigned int, unsigned int);
 static int nfs_wait_on_write_congestion(struct address_space *, int);
 static int nfs_wait_on_requests(struct inode *, unsigned long, unsigned int);
-static int nfs_flush_inode(struct inode *inode, unsigned long idx_start,
-                          unsigned int npages, int how);
+static int nfs_flush_mapping(struct address_space *mapping, struct writeback_control *wbc, int how);
 static const struct rpc_call_ops nfs_write_partial_ops;
 static const struct rpc_call_ops nfs_write_full_ops;
 static const struct rpc_call_ops nfs_commit_ops;
@@ -352,7 +351,7 @@ do_it:
        if (!IS_SYNC(inode) && inode_referenced) {
                err = nfs_writepage_async(ctx, inode, page, 0, offset);
                if (!wbc->for_writepages)
-                       nfs_flush_inode(inode, 0, 0, wb_priority(wbc));
+                       nfs_flush_mapping(page->mapping, wbc, wb_priority(wbc));
        } else {
                err = nfs_writepage_sync(ctx, inode, page, 0,
                                                offset, priority);
@@ -391,11 +390,10 @@ int nfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
                        return 0;
                nfs_wait_on_write_congestion(mapping, 0);
        }
-       err = nfs_flush_inode(inode, 0, 0, wb_priority(wbc));
+       err = nfs_flush_mapping(mapping, wbc, wb_priority(wbc));
        if (err < 0)
                goto out;
        nfs_add_stats(inode, NFSIOS_WRITEPAGES, err);
-       wbc->nr_to_write -= err;
        if (!wbc->nonblocking && wbc->sync_mode == WB_SYNC_ALL) {
                err = nfs_wait_on_requests(inode, 0, 0);
                if (err < 0)
@@ -1469,20 +1467,22 @@ static inline int nfs_commit_list(struct inode *inode, struct list_head *head, i
 }
 #endif
 
-static int nfs_flush_inode(struct inode *inode, unsigned long idx_start,
-                          unsigned int npages, int how)
+static int nfs_flush_mapping(struct address_space *mapping, struct writeback_control *wbc, int how)
 {
-       struct nfs_inode *nfsi = NFS_I(inode);
+       struct nfs_inode *nfsi = NFS_I(mapping->host);
        LIST_HEAD(head);
+       pgoff_t index = wbc->range_start >> PAGE_CACHE_SHIFT;
+       unsigned long npages = 1 + (wbc->range_end >> PAGE_CACHE_SHIFT) - index;
        int res;
 
        spin_lock(&nfsi->req_lock);
-       res = nfs_scan_dirty(inode, &head, idx_start, npages);
+       res = nfs_scan_dirty(mapping->host, &head, index, npages);
        spin_unlock(&nfsi->req_lock);
        if (res) {
-               int error = nfs_flush_list(inode, &head, res, how);
+               int error = nfs_flush_list(mapping->host, &head, res, how);
                if (error < 0)
                        return error;
+               wbc->nr_to_write -= res;
        }
        return res;
 }