nilfs2: segment usage file

This adds a meta data file which stores the allocation state of segments. [[email protected]: fix wrong counting of checkpoints and dirty segments] Signed-off-by: Koji Sato <[email protected]> Signed-off-by: Ryusuke Konishi <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
mrcsosa · Apr 7, 2009 · 6c98cd4 · 6c98cd4
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commit 6c98cd4
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diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
@@ -357,7 +357,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
 		kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
 		header = nilfs_cpfile_block_get_header(cpfile, header_bh,
 						       kaddr);
-		le64_add_cpu(&header->ch_ncheckpoints, -tnicps);
+		le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps);
 		nilfs_mdt_mark_buffer_dirty(header_bh);
 		nilfs_mdt_mark_dirty(cpfile);
 		kunmap_atomic(kaddr, KM_USER0);