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authorZongxun Wang <wangzongxun@huawei.com>2014-02-06 12:04:20 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-02-06 13:48:51 -0800
commitfb951eb5e167de9f07973ce0dfff674a2019bfab (patch)
tree4af8a9764fa9050b2aa70cf6683cdff8becb342d /fs/ocfs2/localalloc.h
parent277cba1d28b99169f2a056d0d6f98a4039531cb8 (diff)
ocfs2: free allocated clusters if error occurs after ocfs2_claim_clusters
Even if using the same jbd2 handle, we cannot rollback a transaction. So once some error occurs after successfully allocating clusters, the allocated clusters will never be used and it means they are lost. For example, call ocfs2_claim_clusters successfully when expanding a file, but failed in ocfs2_insert_extent. So we need free the allocated clusters if they are not used indeed. Signed-off-by: Zongxun Wang <wangzongxun@huawei.com> Signed-off-by: Joseph Qi <joseph.qi@huawei.com> Acked-by: Joel Becker <jlbec@evilplan.org> Cc: Mark Fasheh <mfasheh@suse.com> Cc: Li Zefan <lizefan@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ocfs2/localalloc.h')
-rw-r--r--fs/ocfs2/localalloc.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/fs/ocfs2/localalloc.h b/fs/ocfs2/localalloc.h
index 1be9b5864460..44a7d1fb2dec 100644
--- a/fs/ocfs2/localalloc.h
+++ b/fs/ocfs2/localalloc.h
@@ -55,6 +55,12 @@ int ocfs2_claim_local_alloc_bits(struct ocfs2_super *osb,
u32 *bit_off,
u32 *num_bits);
+int ocfs2_free_local_alloc_bits(struct ocfs2_super *osb,
+ handle_t *handle,
+ struct ocfs2_alloc_context *ac,
+ u32 bit_off,
+ u32 num_bits);
+
void ocfs2_local_alloc_seen_free_bits(struct ocfs2_super *osb,
unsigned int num_clusters);
void ocfs2_la_enable_worker(struct work_struct *work);