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[PATCH v2 6/6] migration: Move ram_release_pages() call to save_zero_pag
From: |
Juan Quintela |
Subject: |
[PATCH v2 6/6] migration: Move ram_release_pages() call to save_zero_page_to_file() |
Date: |
Tue, 21 Dec 2021 13:52:35 +0100 |
We always need to call it when we find a zero page, so put it in a
single place.
Signed-off-by: Juan Quintela <quintela@redhat.com>
---
migration/ram.c | 21 ++++++++++-----------
1 file changed, 10 insertions(+), 11 deletions(-)
diff --git a/migration/ram.c b/migration/ram.c
index eddc85ffb0..3cd98e19d5 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, 1ULL << TARGET_PAGE_BITS);
+}
+
/**
* 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, 1ULL << TARGET_PAGE_BITS);
-}
-
/*
* @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 & TARGET_PAGE_MASK);
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;
}
--
2.33.1
- [PATCH v2 1/6] migration: All this fields are unsigned, (continued)
- [PATCH v2 1/6] migration: All this fields are unsigned, Juan Quintela, 2021/12/21
- [PATCH v2 2/6] migration: We only need last_stage in two places, Juan Quintela, 2021/12/21
- [PATCH v2 3/6] migration: ram_release_pages() always receive 1 page as argument, Juan Quintela, 2021/12/21
- [PATCH v2 4/6] migration: Remove masking for compression, Juan Quintela, 2021/12/21
- [PATCH v2 5/6] migration: simplify do_compress_ram_page, Juan Quintela, 2021/12/21
- [PATCH v2 6/6] migration: Move ram_release_pages() call to save_zero_page_to_file(),
Juan Quintela <=