提交 b84d8796 编写于 作者: M Mark Fortescue 提交者: David S. Miller

[PARTITION] MSDOS: Fix Sun num_partitions handling.

Correct the Solaris x86 number of partitions (slices) is a way that is
backward compatible with the earlier size.

This works without a new VTOC structure definition as the timestamp
and v_asciilabel fields in the VTOC are not used by the kernel yet.
Signed-off-by: NMark Fortescue <mark@mtfhpc.demon.co.uk>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 cce933bc
......@@ -203,6 +203,7 @@ parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
Sector sect;
struct solaris_x86_vtoc *v;
int i;
short max_nparts;
v = (struct solaris_x86_vtoc *)read_dev_sector(bdev, offset+1, &sect);
if (!v)
......@@ -218,7 +219,9 @@ parse_solaris_x86(struct parsed_partitions *state, struct block_device *bdev,
put_dev_sector(sect);
return;
}
for (i=0; i<SOLARIS_X86_NUMSLICE && state->next<state->limit; i++) {
/* Ensure we can handle previous case of VTOC with 8 entries gracefully */
max_nparts = le16_to_cpu (v->v_nparts) > 8 ? SOLARIS_X86_NUMSLICE : 8;
for (i=0; i<max_nparts && state->next<state->limit; i++) {
struct solaris_x86_slice *s = &v->v_slice[i];
if (s->s_size == 0)
continue;
......
......@@ -264,7 +264,7 @@ static inline void set_capacity(struct gendisk *disk, sector_t size)
#ifdef CONFIG_SOLARIS_X86_PARTITION
#define SOLARIS_X86_NUMSLICE 8
#define SOLARIS_X86_NUMSLICE 16
#define SOLARIS_X86_VTOC_SANE (0x600DDEEEUL)
struct solaris_x86_slice {
......
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