[Qemu-devel] [PATCH v14 2/5] block: don't convert file size to sector size

[Hu Tao]

and avoid converting it back later.

Signed-off-by: Hu Tao <address@hidden>
Reviewed-by: Max Reitz <address@hidden>
---
 block/gluster.c   |  9 ++++-----
 block/qcow.c      |  8 ++++----
 block/qcow2.c     | 10 +++++-----
 block/raw-posix.c | 12 ++++++------
 block/raw-win32.c |  6 +++---
 5 files changed, 22 insertions(+), 23 deletions(-)

diff --git a/block/gluster.c b/block/gluster.c
index 65c7a58..1eb3a8c 100644
--- a/block/gluster.c
+++ b/block/gluster.c
@@ -494,8 +494,8 @@ static int qemu_gluster_create(const char *filename,
         goto out;
     }
 
-    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
-                              BDRV_SECTOR_SIZE);
+    total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                          BDRV_SECTOR_SIZE);
 
     tmp = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
     if (!tmp || !strcmp(tmp, "off")) {
@@ -516,9 +516,8 @@ static int qemu_gluster_create(const char *filename,
     if (!fd) {
         ret = -errno;
     } else {
-        if (!glfs_ftruncate(fd, total_size * BDRV_SECTOR_SIZE)) {
-            if (prealloc && qemu_gluster_zerofill(fd, 0,
-                    total_size * BDRV_SECTOR_SIZE)) {
+        if (!glfs_ftruncate(fd, total_size)) {
+            if (prealloc && qemu_gluster_zerofill(fd, 0, total_size)) {
                 ret = -errno;
             }
         } else {
diff --git a/block/qcow.c b/block/qcow.c
index 041af26..a87bd69 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -725,8 +725,8 @@ static int qcow_create(const char *filename, QemuOpts 
*opts, Error **errp)
     BlockDriverState *qcow_bs;
 
     /* Read out options */
-    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
-                              BDRV_SECTOR_SIZE);
+    total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                          BDRV_SECTOR_SIZE);
     backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE);
     if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ENCRYPT, false)) {
         flags |= BLOCK_FLAG_ENCRYPT;
@@ -754,7 +754,7 @@ static int qcow_create(const char *filename, QemuOpts 
*opts, Error **errp)
     memset(&header, 0, sizeof(header));
     header.magic = cpu_to_be32(QCOW_MAGIC);
     header.version = cpu_to_be32(QCOW_VERSION);
-    header.size = cpu_to_be64(total_size * 512);
+    header.size = cpu_to_be64(total_size);
     header_size = sizeof(header);
     backing_filename_len = 0;
     if (backing_file) {
@@ -776,7 +776,7 @@ static int qcow_create(const char *filename, QemuOpts 
*opts, Error **errp)
     }
     header_size = (header_size + 7) & ~7;
     shift = header.cluster_bits + header.l2_bits;
-    l1_size = ((total_size * 512) + (1LL << shift) - 1) >> shift;
+    l1_size = (total_size + (1LL << shift) - 1) >> shift;
 
     header.l1_table_offset = cpu_to_be64(header_size);
     if (flags & BLOCK_FLAG_ENCRYPT) {
diff --git a/block/qcow2.c b/block/qcow2.c
index c8050e5..cf27c3f 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1859,7 +1859,7 @@ static int qcow2_create2(const char *filename, int64_t 
total_size,
     }
 
     /* Okay, now that we have a valid image, let's give it the right size */
-    ret = bdrv_truncate(bs, total_size * BDRV_SECTOR_SIZE);
+    ret = bdrv_truncate(bs, total_size);
     if (ret < 0) {
         error_setg_errno(errp, -ret, "Could not resize image");
         goto out;
@@ -1912,7 +1912,7 @@ static int qcow2_create(const char *filename, QemuOpts 
*opts, Error **errp)
     char *backing_file = NULL;
     char *backing_fmt = NULL;
     char *buf = NULL;
-    uint64_t sectors = 0;
+    uint64_t size = 0;
     int flags = 0;
     size_t cluster_size = DEFAULT_CLUSTER_SIZE;
     int prealloc = 0;
@@ -1921,8 +1921,8 @@ static int qcow2_create(const char *filename, QemuOpts 
*opts, Error **errp)
     int ret;
 
     /* Read out options */
-    sectors = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
-                           BDRV_SECTOR_SIZE);
+    size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                    BDRV_SECTOR_SIZE);
     backing_file = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FILE);
     backing_fmt = qemu_opt_get_del(opts, BLOCK_OPT_BACKING_FMT);
     if (qemu_opt_get_bool_del(opts, BLOCK_OPT_ENCRYPT, false)) {
@@ -1972,7 +1972,7 @@ static int qcow2_create(const char *filename, QemuOpts 
*opts, Error **errp)
         goto finish;
     }
 
-    ret = qcow2_create2(filename, sectors, backing_file, backing_fmt, flags,
+    ret = qcow2_create2(filename, size, backing_file, backing_fmt, flags,
                         cluster_size, prealloc, opts, version, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
diff --git a/block/raw-posix.c b/block/raw-posix.c
index 9c22e3f..7208c05 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1369,8 +1369,8 @@ static int raw_create(const char *filename, QemuOpts 
*opts, Error **errp)
     strstart(filename, "file:", &filename);
 
     /* Read out options */
-    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
-                              BDRV_SECTOR_SIZE);
+    total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                          BDRV_SECTOR_SIZE);
     nocow = qemu_opt_get_bool(opts, BLOCK_OPT_NOCOW, false);
 
     fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
@@ -1394,7 +1394,7 @@ static int raw_create(const char *filename, QemuOpts 
*opts, Error **errp)
 #endif
         }
 
-        if (ftruncate(fd, total_size * BDRV_SECTOR_SIZE) != 0) {
+        if (ftruncate(fd, total_size) != 0) {
             result = -errno;
             error_setg_errno(errp, -result, "Could not resize file");
         }
@@ -1966,8 +1966,8 @@ static int hdev_create(const char *filename, QemuOpts 
*opts,
     (void)has_prefix;
 
     /* Read out options */
-    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
-                              BDRV_SECTOR_SIZE);
+    total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                          BDRV_SECTOR_SIZE);
 
     fd = qemu_open(filename, O_WRONLY | O_BINARY);
     if (fd < 0) {
@@ -1983,7 +1983,7 @@ static int hdev_create(const char *filename, QemuOpts 
*opts,
         error_setg(errp,
                    "The given file is neither a block nor a character device");
         ret = -ENODEV;
-    } else if (lseek(fd, 0, SEEK_END) < total_size * BDRV_SECTOR_SIZE) {
+    } else if (lseek(fd, 0, SEEK_END) < total_size) {
         error_setg(errp, "Device is too small");
         ret = -ENOSPC;
     }
diff --git a/block/raw-win32.c b/block/raw-win32.c
index 1e1880d..9bf8225 100644
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -511,8 +511,8 @@ static int raw_create(const char *filename, QemuOpts *opts, 
Error **errp)
     strstart(filename, "file:", &filename);
 
     /* Read out options */
-    total_size = DIV_ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
-                              BDRV_SECTOR_SIZE);
+    total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+                          BDRV_SECTOR_SIZE);
 
     fd = qemu_open(filename, O_WRONLY | O_CREAT | O_TRUNC | O_BINARY,
                    0644);
@@ -521,7 +521,7 @@ static int raw_create(const char *filename, QemuOpts *opts, 
Error **errp)
         return -EIO;
     }
     set_sparse(fd);
-    ftruncate(fd, total_size * 512);
+    ftruncate(fd, total_size);
     qemu_close(fd);
     return 0;
 }
-- 
1.9.3