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path: root/drivers/md/dm-log.c
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Diffstat (limited to 'drivers/md/dm-log.c')
-rw-r--r--drivers/md/dm-log.c20
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/md/dm-log.c b/drivers/md/dm-log.c
index 948e3f4925bf..5f06fb687408 100644
--- a/drivers/md/dm-log.c
+++ b/drivers/md/dm-log.c
@@ -197,15 +197,21 @@ EXPORT_SYMBOL(dm_dirty_log_destroy);
#define MIRROR_DISK_VERSION 2
#define LOG_OFFSET 2
-struct log_header {
- uint32_t magic;
+struct log_header_disk {
+ __le32 magic;
/*
* Simple, incrementing version. no backward
* compatibility.
*/
+ __le32 version;
+ __le64 nr_regions;
+} __packed;
+
+struct log_header_core {
+ uint32_t magic;
uint32_t version;
- sector_t nr_regions;
+ uint64_t nr_regions;
};
struct log_c {
@@ -239,10 +245,10 @@ struct log_c {
int log_dev_failed;
int log_dev_flush_failed;
struct dm_dev *log_dev;
- struct log_header header;
+ struct log_header_core header;
struct dm_io_region header_location;
- struct log_header *disk_header;
+ struct log_header_disk *disk_header;
};
/*
@@ -271,14 +277,14 @@ static inline void log_clear_bit(struct log_c *l,
/*----------------------------------------------------------------
* Header IO
*--------------------------------------------------------------*/
-static void header_to_disk(struct log_header *core, struct log_header *disk)
+static void header_to_disk(struct log_header_core *core, struct log_header_disk *disk)
{
disk->magic = cpu_to_le32(core->magic);
disk->version = cpu_to_le32(core->version);
disk->nr_regions = cpu_to_le64(core->nr_regions);
}
-static void header_from_disk(struct log_header *core, struct log_header *disk)
+static void header_from_disk(struct log_header_core *core, struct log_header_disk *disk)
{
core->magic = le32_to_cpu(disk->magic);
core->version = le32_to_cpu(disk->version);