mirror of
https://github.com/torvalds/linux.git
synced 2024-10-31 17:21:49 +00:00
6d1d8050b4
I'm reposting this patch series as v4 since there have been no additional
comments, and I cleaned up one extra bit of unneeded code (in 3/3). The patches
are against Linus's tree: 2bfc96a127
(2.6.36-rc3).
Would this patchset be suitable for inclusion in an mm branch?
This changes adds a partition_meta_info struct which itself contains a
union of structures that provide partition table specific metadata.
This change leaves the union empty. The subsequent patch includes an
implementation for CONFIG_EFI_PARTITION-based metadata.
Signed-off-by: Will Drewry <wad@chromium.org>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
50 lines
1.0 KiB
C
50 lines
1.0 KiB
C
#include <linux/pagemap.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/genhd.h>
|
|
|
|
/*
|
|
* add_gd_partition adds a partitions details to the devices partition
|
|
* description.
|
|
*/
|
|
struct parsed_partitions {
|
|
struct block_device *bdev;
|
|
char name[BDEVNAME_SIZE];
|
|
struct {
|
|
sector_t from;
|
|
sector_t size;
|
|
int flags;
|
|
bool has_info;
|
|
struct partition_meta_info info;
|
|
} parts[DISK_MAX_PARTS];
|
|
int next;
|
|
int limit;
|
|
bool access_beyond_eod;
|
|
char *pp_buf;
|
|
};
|
|
|
|
static inline void *read_part_sector(struct parsed_partitions *state,
|
|
sector_t n, Sector *p)
|
|
{
|
|
if (n >= get_capacity(state->bdev->bd_disk)) {
|
|
state->access_beyond_eod = true;
|
|
return NULL;
|
|
}
|
|
return read_dev_sector(state->bdev, n, p);
|
|
}
|
|
|
|
static inline void
|
|
put_partition(struct parsed_partitions *p, int n, sector_t from, sector_t size)
|
|
{
|
|
if (n < p->limit) {
|
|
char tmp[1 + BDEVNAME_SIZE + 10 + 1];
|
|
|
|
p->parts[n].from = from;
|
|
p->parts[n].size = size;
|
|
snprintf(tmp, sizeof(tmp), " %s%d", p->name, n);
|
|
strlcat(p->pp_buf, tmp, PAGE_SIZE);
|
|
}
|
|
}
|
|
|
|
extern int warn_no_part;
|
|
|