From: Aki Tuomi <aki.tuomi@open-xchange.com>
Date: Tue, 11 Nov 2025 08:16:09 +0000 (+0200)
Subject: doveadm: dsync - Search exportable mails with SMALLER
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d40140e34014432ed6c61f72acfb6b94b98295f;p=thirdparty%2Fdovecot%2Fcore.git

doveadm: dsync - Search exportable mails with SMALLER

This speeds up dsync with -I, especially over network connection.
---

diff --git a/src/doveadm/dsync/dsync-brain-mailbox.c b/src/doveadm/dsync/dsync-brain-mailbox.c
index 3a17511a6d..7c40af49f2 100644
--- a/src/doveadm/dsync/dsync-brain-mailbox.c
+++ b/src/doveadm/dsync/dsync-brain-mailbox.c
@@ -357,6 +357,7 @@ int dsync_brain_sync_mailbox_open(struct dsync_brain *brain,
 		.hdr_hash_version = brain->hdr_hash_version,
 		.sync_since_timestamp = brain->sync_since_timestamp,
 		.sync_until_timestamp = brain->sync_until_timestamp,
+		.sync_max_size = brain->sync_max_size,
 		.hashed_headers = brain->hashed_headers,
 		.parent_event = brain->event,
 	};
diff --git a/src/doveadm/dsync/dsync-mailbox-export.c b/src/doveadm/dsync/dsync-mailbox-export.c
index 4d97751581..34907fcceb 100644
--- a/src/doveadm/dsync/dsync-mailbox-export.c
+++ b/src/doveadm/dsync/dsync-mailbox-export.c
@@ -59,6 +59,7 @@ struct dsync_mailbox_exporter {
 
 	time_t sync_since_timestamp;
 	time_t sync_until_timestamp;
+	uoff_t sync_max_size;
 
 	const char *error;
 	enum mail_error mail_error;
@@ -418,6 +419,12 @@ dsync_mailbox_export_search(struct dsync_mailbox_exporter *exporter)
 		sarg->value.time = exporter->sync_until_timestamp;
 	}
 
+	if (exporter->sync_max_size != 0) {
+		sarg = mail_search_build_add(search_args, SEARCH_SMALLER);
+		/* the limit is <= but search criteria is < */
+		sarg->value.size = exporter->sync_max_size + 1;
+	}
+
 	exporter->trans = mailbox_transaction_begin(exporter->box,
 						MAILBOX_TRANSACTION_FLAG_SYNC,
 						__func__);
@@ -545,6 +552,7 @@ dsync_mailbox_export_init(struct mailbox *box,
 	exporter->hashed_headers = set->hashed_headers;
 	exporter->sync_since_timestamp = set->sync_since_timestamp;
 	exporter->sync_until_timestamp = set->sync_until_timestamp;
+	exporter->sync_max_size = set->sync_max_size;
 	exporter->event = event_create(set->parent_event);
 
 	p_array_init(&exporter->requested_uids, pool, 16);
diff --git a/src/doveadm/dsync/dsync-mailbox-export.h b/src/doveadm/dsync/dsync-mailbox-export.h
index 0a42f657c1..ae4df9ea37 100644
--- a/src/doveadm/dsync/dsync-mailbox-export.h
+++ b/src/doveadm/dsync/dsync-mailbox-export.h
@@ -17,6 +17,7 @@ struct dsync_mailbox_export_settings {
 	const char *const *hashed_headers;
 	time_t sync_since_timestamp;
 	time_t sync_until_timestamp;
+	uoff_t sync_max_size;
 	struct event *parent_event;
 };