From: Prasad Pandit
Rearrange BRDVRawState structure fields to avoid memory
fragments in its object's memory and save some(~8) bytes
per object.
Signed-off-by: Prasad Pandit
---
block/file-posix.c | 39 +++
1 file changed, 19 insertions(+), 20 deletions(-)
diff --git a/block/file-posix.c b/block/file-posix.c
index 78a8cea03b..584346ea3e 100644
--- a/block/file-posix.c
+++ b/block/file-posix.c
@@ -135,12 +135,6 @@
#define RAW_LOCK_SHARED_BASE 200
typedef struct BDRVRawState {
-int fd;
-bool use_lock;
-int type;
-int open_flags;
-size_t buf_align;
-
/* The current permissions. */
uint64_t perm;
uint64_t shared_perm;
@@ -151,29 +145,34 @@ typedef struct BDRVRawState {
uint64_t locked_shared_perm;
uint64_t aio_max_batch;
+struct {
+uint64_t discard_nb_ok;
+uint64_t discard_nb_failed;
+uint64_t discard_bytes_ok;
+} stats;
+PRManager *pr_mgr;
+BDRVReopenState *reopen_state;
+
+size_t buf_align;
+int fd;
+int type;
+int open_flags;
int perm_change_fd;
int perm_change_flags;
-BDRVReopenState *reopen_state;
+int page_cache_inconsistent; /* errno from fdatasync failure */
+bool use_lock;
+bool has_fallocate;
+bool needs_alignment;
+bool force_alignment;
+bool drop_cache;
+bool check_cache_dropped;
bool has_discard:1;
bool has_write_zeroes:1;
bool use_linux_aio:1;
bool has_laio_fdsync:1;
bool use_linux_io_uring:1;
-int page_cache_inconsistent; /* errno from fdatasync failure */
-bool has_fallocate;
-bool needs_alignment;
-bool force_alignment;
-bool drop_cache;
-bool check_cache_dropped;
-struct {
-uint64_t discard_nb_ok;
-uint64_t discard_nb_failed;
-uint64_t discard_bytes_ok;
-} stats;
-
-PRManager *pr_mgr;
} BDRVRawState;
typedef struct BDRVRawReopenState {
--
2.44.0
