From: Adam Kupczyk <akupczyk@ibm.com>
Date: Wed, 7 May 2025 08:25:19 +0000 (+0000)
Subject: os/bluestore/recompression: Now able to reach left boundary
X-Git-Url: http://git.apps.os.sepia.ceph.com/?a=commitdiff_plain;h=6adc172f92bbeec42493ed133e90ddc78c39142f;p=ceph.git

os/bluestore/recompression: Now able to reach left boundary

Bad comparision caused recompression range to exclude left boundary
point. In most cases it makes little difference, but it prevents from:
1) including extent starting at 0
2) including extent at begging of onode segment
Now fixed.

Fixes: https://tracker.ceph.com/issues/71244

Signed-off-by: Adam Kupczyk <akupczyk@ibm.com>
(cherry picked from commit acfe527d9bbe3364f9e321ce6e790f93eafe41df)
---

diff --git a/src/os/bluestore/Compression.cc b/src/os/bluestore/Compression.cc
index 41684cb630d34..ca3befe3cf190 100644
--- a/src/os/bluestore/Compression.cc
+++ b/src/os/bluestore/Compression.cc
@@ -872,7 +872,7 @@ void Scan::on_write_start(
   }
   if (left_it != extent_map->extent_map.begin()) {
     --left_it; // left_walk points to processes extent
-    if (limit_left < left_it->logical_offset) {
+    if (limit_left <= left_it->logical_offset) {
       dout(30) << "left maybe expand" << dendl;
       has_expanded |= maybe_expand_scan_range(left_it, left, right);
     }