From 47fe16ff666bf1d106dd7d74e94ba2dc050b1c95 Mon Sep 17 00:00:00 2001 From: Juan Quintela Date: Thu, 16 Dec 2021 09:58:49 +0100 Subject: [PATCH] migration: Move ram_release_pages() call to save_zero_page_to_file() We always need to call it when we find a zero page, so put it in a single place. Signed-off-by: Juan Quintela Reviewed-by: Peter Xu --- migration/ram.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/migration/ram.c b/migration/ram.c index 422c6bce28..e9dcd3ca4e 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1158,6 +1158,15 @@ static void migration_bitmap_sync_precopy(RAMState *rs) } } +static void ram_release_page(const char *rbname, uint64_t offset) +{ + if (!migrate_release_ram() || !migration_in_postcopy()) { + return; + } + + ram_discard_range(rbname, offset, TARGET_PAGE_SIZE); +} + /** * save_zero_page_to_file: send the zero page to the file * @@ -1179,6 +1188,7 @@ static int save_zero_page_to_file(RAMState *rs, QEMUFile *file, len += save_page_header(rs, file, block, offset | RAM_SAVE_FLAG_ZERO); qemu_put_byte(file, 0); len += 1; + ram_release_page(block->idstr, offset); } return len; } @@ -1204,15 +1214,6 @@ static int save_zero_page(RAMState *rs, RAMBlock *block, ram_addr_t offset) return -1; } -static void ram_release_page(const char *rbname, uint64_t offset) -{ - if (!migrate_release_ram() || !migration_in_postcopy()) { - return; - } - - ram_discard_range(rbname, offset, TARGET_PAGE_SIZE); -} - /* * @pages: the number of pages written by the control path, * < 0 - error @@ -1344,7 +1345,6 @@ static bool do_compress_ram_page(QEMUFile *f, z_stream *stream, RAMBlock *block, int ret; if (save_zero_page_to_file(rs, f, block, offset)) { - ram_release_page(block->idstr, offset); return true; } @@ -2148,7 +2148,6 @@ static int ram_save_target_page(RAMState *rs, PageSearchStatus *pss) xbzrle_cache_zero_page(rs, block->offset + offset); XBZRLE_cache_unlock(); } - ram_release_page(block->idstr, offset); return res; }