When looking for overlapping loop device we can fail getting some loop
device properties when we race with device autoclear. Just squelsh these
errors and try next loop device.
Signed-off-by: Jan Kara <jack@xxxxxxx>
---
lib/loopdev.c | 15 +++++++++------
1 file changed, 9 insertions(+), 6 deletions(-)
diff --git a/lib/loopdev.c b/lib/loopdev.c
index 27ab06c66848..d49738fde122 100644
--- a/lib/loopdev.c
+++ b/lib/loopdev.c
@@ -1777,10 +1777,13 @@ int loopcxt_find_overlap(struct loopdev_cxt *lc, const char *filename,
rc = loopcxt_is_used(lc, hasst ? &st : NULL,
filename, offset, sizelimit, 0);
- if (!rc)
- continue; /* unused */
- if (rc < 0)
- break; /* error */
+ /*
+ * Either the loopdev is unused or we've got an error which can
+ * happen when we are racing with device autoclear. Just ignore
+ * this loopdev...
+ */
+ if (rc <= 0)
+ continue;
DBG(CXT, ul_debugobj(lc, "found %s backed by %s",
loopcxt_get_device(lc), filename));
@@ -1789,13 +1792,13 @@ int loopcxt_find_overlap(struct loopdev_cxt *lc, const char *filename,
if (rc) {
DBG(CXT, ul_debugobj(lc, "failed to get offset for device %s",
loopcxt_get_device(lc)));
- break;
+ continue;
}
rc = loopcxt_get_sizelimit(lc, &lc_sizelimit);
if (rc) {
DBG(CXT, ul_debugobj(lc, "failed to get sizelimit for device %s",
loopcxt_get_device(lc)));
- break;
+ continue;
}
/* full match */
--
2.31.1
