From: Xuehan Xu <xxhdx1985126@gmail.com>
Date: Tue, 16 Aug 2022 08:48:28 +0000 (+0800)
Subject: crimson/os/seastore/cached_extent: add on_replace_prior interface
X-Git-Tag: v18.1.0~34^2~18
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=8468059883528e20ddb9399b708c18de98611147;p=ceph-ci.git

crimson/os/seastore/cached_extent: add on_replace_prior interface

Signed-off-by: Xuehan Xu <xxhdx1985126@gmail.com>
(cherry picked from commit c56af30a9c199b4a5d2cba9d2208b8c1d8a6abfb)
---

diff --git a/src/crimson/os/seastore/cache.cc b/src/crimson/os/seastore/cache.cc
index 8209e374994..ebeb123cf5e 100644
--- a/src/crimson/os/seastore/cache.cc
+++ b/src/crimson/os/seastore/cache.cc
@@ -802,6 +802,7 @@ void Cache::commit_replace_extent(
     add_to_dirty(next);
   }
 
+  next->on_replace_prior(t);
   invalidate_extent(t, *prev);
 }
 
diff --git a/src/crimson/os/seastore/cached_extent.h b/src/crimson/os/seastore/cached_extent.h
index f79eb3e644e..02450449551 100644
--- a/src/crimson/os/seastore/cached_extent.h
+++ b/src/crimson/os/seastore/cached_extent.h
@@ -232,6 +232,16 @@ public:
    */
   virtual void on_delta_write(paddr_t record_block_offset) {}
 
+  /**
+   * on_replace_prior
+   *
+   * Called after the extent has replaced a previous one. State
+   * of the extent must be MUTATION_PENDING. Implementation
+   * may use this call to synchronize states that must be synchronized
+   * with the states of Cache and can't wait till transaction
+   * completes.
+   */
+  virtual void on_replace_prior(Transaction &t) {}
   /**
    * get_type
    *