f2fs: invalidate inmemory page

[deliverable/linux.git] / fs / f2fs / segment.c

diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c
index 9d4a7ab33b06ba203d19f89091f21312ccbdc092..902c4c3f6b708872fd577e4ca7723e9d6347f98f 100644 (file)
--- a/fs/f2fs/segment.c
+++ b/fs/f2fs/segment.c
@@ -203,6 +203,22 @@ retry:
        mutex_unlock(&fi->inmem_lock);
 }
 
+void invalidate_inmem_page(struct inode *inode, struct page *page)
+{
+       struct f2fs_inode_info *fi = F2FS_I(inode);
+       struct inmem_pages *cur;
+
+       mutex_lock(&fi->inmem_lock);
+       cur = radix_tree_lookup(&fi->inmem_root, page->index);
+       if (cur) {
+               radix_tree_delete(&fi->inmem_root, cur->page->index);
+               f2fs_put_page(cur->page, 0);
+               list_del(&cur->list);
+               kmem_cache_free(inmem_entry_slab, cur);
+       }
+       mutex_unlock(&fi->inmem_lock);
+}
+
 void commit_inmem_pages(struct inode *inode, bool abort)
 {
        struct f2fs_sb_info *sbi = F2FS_I_SB(inode);