mm: unexport ksize

[linux-2.6-omap-h63xx.git] / mm / filemap.c

diff --git a/mm/filemap.c b/mm/filemap.c
index 2ed8b0389c51a91d7dbc24fa210310d3986ca5fe..42bbc6909ba4852ac41506b175584ba4d00e32eb 100644 (file)
--- a/mm/filemap.c
+++ b/mm/filemap.c
@@ -1023,8 +1023,17 @@ find_page:
                                        ra, filp, page,
                                        index, last_index - index);
                }
-               if (!PageUptodate(page))
-                       goto page_not_up_to_date;
+               if (!PageUptodate(page)) {
+                       if (inode->i_blkbits == PAGE_CACHE_SHIFT ||
+                                       !mapping->a_ops->is_partially_uptodate)
+                               goto page_not_up_to_date;
+                       if (TestSetPageLocked(page))
+                               goto page_not_up_to_date;
+                       if (!mapping->a_ops->is_partially_uptodate(page,
+                                                               desc, offset))
+                               goto page_not_up_to_date_locked;
+                       unlock_page(page);
+               }
 page_ok:
                /*
                 * i_size must be checked after we know the page is Uptodate.
@@ -1094,6 +1103,7 @@ page_not_up_to_date:
                if (lock_page_killable(page))
                        goto readpage_eio;
 
+page_not_up_to_date_locked:
                /* Did it get truncated before we got the lock? */
                if (!page->mapping) {
                        unlock_page(page);
@@ -1758,8 +1768,9 @@ static int __remove_suid(struct dentry *dentry, int kill)
        return notify_change(dentry, &newattrs);
 }
 
-int remove_suid(struct dentry *dentry)
+int file_remove_suid(struct file *file)
 {
+       struct dentry *dentry = file->f_path.dentry;
        int killsuid = should_remove_suid(dentry);
        int killpriv = security_inode_need_killpriv(dentry);
        int error = 0;
@@ -1773,7 +1784,7 @@ int remove_suid(struct dentry *dentry)
 
        return error;
 }
-EXPORT_SYMBOL(remove_suid);
+EXPORT_SYMBOL(file_remove_suid);
 
 static size_t __iovec_copy_from_user_inatomic(char *vaddr,
                        const struct iovec *iov, size_t base, size_t bytes)
@@ -2529,7 +2540,7 @@ __generic_file_aio_write_nolock(struct kiocb *iocb, const struct iovec *iov,
        if (count == 0)
                goto out;
 
-       err = remove_suid(file->f_path.dentry);
+       err = file_remove_suid(file);
        if (err)
                goto out;