From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 27 Aug 2025 19:42:39 +0000 (+0200)
Subject: loop-util: fully suppress unnecessary size changes
X-Git-Tag: v259-rc1~449
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=ec3139db8b044b9883531c2e9d3adf8c180266fe;p=thirdparty%2Fsystemd.git

loop-util: fully suppress unnecessary size changes

Typically we set the offset argument to UINT64_MAX in most calls, but
this caused us to not detect no-change invocations. Fix that.
---

diff --git a/src/shared/loop-util.c b/src/shared/loop-util.c
index b60e66c37e3..53d7759e2ef 100644
--- a/src/shared/loop-util.c
+++ b/src/shared/loop-util.c
@@ -1064,9 +1064,8 @@ int loop_device_refresh_size(LoopDevice *d, uint64_t offset, uint64_t size) {
         VALGRIND_MAKE_MEM_DEFINED(&info, sizeof(info));
 #endif
 
-        if (size == UINT64_MAX && offset == UINT64_MAX)
-                return 0;
-        if (info.lo_sizelimit == size && info.lo_offset == offset)
+        if ((size == UINT64_MAX || info.lo_sizelimit == size) &&
+            (offset == UINT64_MAX || info.lo_offset == offset))
                 return 0;
 
         if (size != UINT64_MAX)