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Grow: make sure bsb2 is properly aligned 

We do O_DIRECT io in bsb2, so it must be aligned
properly.  Easiest if it is static.

Signed-off-by: NeilBrown <neilb@suse.de>
This commit is contained in:
NeilBrown 2009-10-12 16:55:12 +11:00
parent 249887eb76
commit 5fdf37e357
1 changed files with 2 additions and 3 deletions
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5
Grow.c
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@ -387,7 +387,7 @@ int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int
* It has the following structure.
*/
struct mdp_backup_super {
static struct mdp_backup_super {
char magic[16]; /* md_backup_data-1 or -2 */
__u8 set_uuid[16];
__u64 mtime;
@ -402,7 +402,7 @@ struct mdp_backup_super {
__u64 length2;
__u32 sb_csum2; /* csum of preceeding bytes. */
__u8 pad[512-68-32];
} __attribute__((aligned(512))) bsb;
} __attribute__((aligned(512))) bsb, bsb2;
int bsb_csum(char *buf, int len)
{
@ -1331,7 +1331,6 @@ static void validate(int afd, int bfd, unsigned long long offset)
* This is only used for regression testing and should not
* be used while the array is active
*/
struct mdp_backup_super bsb2;
if (afd < 0)
return;
lseek64(bfd, offset - 4096, 0);