* module load parameters or the kernel boot parameters. If MTD devices were
* specified, UBI does not attach any MTD device, but it is possible to do
* later using the "UBI control device".
- *
- * At the moment we only attach UBI devices by scanning, which will become a
- * bottleneck when flashes reach certain large size. Then one may improve UBI
- * and add other methods, although it does not seem to be easy to do.
*/
#include <linux/err.h>
}
/**
- * free_internal_volumes - free internal volumes.
+ * ubi_free_internal_volumes - free internal volumes.
* @ubi: UBI device description object
*/
-static void free_internal_volumes(struct ubi_device *ubi)
+void ubi_free_internal_volumes(struct ubi_device *ubi)
{
int i;
}
}
-/**
- * attach_by_scanning - attach an MTD device using scanning method.
- * @ubi: UBI device descriptor
- *
- * This function returns zero in case of success and a negative error code in
- * case of failure.
- *
- * Note, currently this is the only method to attach UBI devices. Hopefully in
- * the future we'll have more scalable attaching methods and avoid full media
- * scanning. But even in this case scanning will be needed as a fall-back
- * attaching method if there are some on-flash table corruptions.
- */
-static int attach_by_scanning(struct ubi_device *ubi)
-{
- int err;
- struct ubi_scan_info *si;
-
- si = ubi_scan(ubi);
- if (IS_ERR(si))
- return PTR_ERR(si);
-
- ubi->bad_peb_count = si->bad_peb_count;
- ubi->good_peb_count = ubi->peb_count - ubi->bad_peb_count;
- ubi->corr_peb_count = si->corr_peb_count;
- ubi->max_ec = si->max_ec;
- ubi->mean_ec = si->mean_ec;
- ubi_msg("max. sequence number: %llu", si->max_sqnum);
-
- err = ubi_read_volume_table(ubi, si);
- if (err)
- goto out_si;
-
- err = ubi_wl_init_scan(ubi, si);
- if (err)
- goto out_vtbl;
-
- err = ubi_eba_init_scan(ubi, si);
- if (err)
- goto out_wl;
-
- ubi_scan_destroy_si(si);
- return 0;
-
-out_wl:
- ubi_wl_close(ubi);
-out_vtbl:
- free_internal_volumes(ubi);
- vfree(ubi->vtbl);
-out_si:
- ubi_scan_destroy_si(si);
- return err;
-}
-
/**
* io_init - initialize I/O sub-system for a given UBI device.
* @ubi: UBI device description object
ubi_msg("data offset: %d", ubi->leb_start);
/*
- * Note, ideally, we have to initialize ubi->bad_peb_count here. But
+ * Note, ideally, we have to initialize @ubi->bad_peb_count here. But
* unfortunately, MTD does not provide this information. We should loop
* over all physical eraseblocks and invoke mtd->block_is_bad() for
- * each physical eraseblock. So, we skip ubi->bad_peb_count
- * uninitialized and initialize it after scanning.
+ * each physical eraseblock. So, we leave @ubi->bad_peb_count
+ * uninitialized so far.
*/
return 0;
* @ubi: UBI device description object
* @vol_id: ID of the volume to re-size
*
- * This function re-sizes the volume marked by the @UBI_VTBL_AUTORESIZE_FLG in
+ * This function re-sizes the volume marked by the %UBI_VTBL_AUTORESIZE_FLG in
* the volume table to the largest possible size. See comments in ubi-header.h
* for more description of the flag. Returns zero in case of success and a
* negative error code in case of failure.
struct ubi_volume *vol = ubi->volumes[vol_id];
int err, old_reserved_pebs = vol->reserved_pebs;
+ if (ubi->ro_mode) {
+ ubi_warn("skip auto-resize because of R/O mode");
+ return 0;
+ }
+
/*
* Clear the auto-resize flag in the volume in-memory copy of the
* volume table, and 'ubi_resize_volume()' will propagate this change
for (i = 0; i < UBI_MAX_DEVICES; i++) {
ubi = ubi_devices[i];
if (ubi && mtd->index == ubi->mtd->index) {
- dbg_err("mtd%d is already attached to ubi%d",
+ ubi_err("mtd%d is already attached to ubi%d",
mtd->index, i);
return -EEXIST;
}
if (!ubi_devices[ubi_num])
break;
if (ubi_num == UBI_MAX_DEVICES) {
- dbg_err("only %d UBI devices may be created",
+ ubi_err("only %d UBI devices may be created",
UBI_MAX_DEVICES);
return -ENFILE;
}
/* Make sure ubi_num is not busy */
if (ubi_devices[ubi_num]) {
- dbg_err("ubi%d already exists", ubi_num);
+ ubi_err("ubi%d already exists", ubi_num);
return -EEXIST;
}
}
spin_lock_init(&ubi->volumes_lock);
ubi_msg("attaching mtd%d to ubi%d", mtd->index, ubi_num);
- dbg_msg("sizeof(struct ubi_scan_leb) %zu", sizeof(struct ubi_scan_leb));
+ dbg_msg("sizeof(struct ubi_ainf_peb) %zu", sizeof(struct ubi_ainf_peb));
dbg_msg("sizeof(struct ubi_wl_entry) %zu", sizeof(struct ubi_wl_entry));
err = io_init(ubi);
goto out_free;
err = -ENOMEM;
- ubi->peb_buf1 = vmalloc(ubi->peb_size);
- if (!ubi->peb_buf1)
- goto out_free;
-
- ubi->peb_buf2 = vmalloc(ubi->peb_size);
- if (!ubi->peb_buf2)
+ ubi->peb_buf = vmalloc(ubi->peb_size);
+ if (!ubi->peb_buf)
goto out_free;
err = ubi_debugging_init_dev(ubi);
if (err)
goto out_free;
- err = attach_by_scanning(ubi);
+ err = ubi_attach(ubi);
if (err) {
- dbg_err("failed to attach by scanning, error %d", err);
+ ubi_err("failed to attach mtd%d, error %d", mtd->index, err);
goto out_debugging;
}
uif_close(ubi);
out_detach:
ubi_wl_close(ubi);
- free_internal_volumes(ubi);
+ ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
out_debugging:
ubi_debugging_exit_dev(ubi);
out_free:
- vfree(ubi->peb_buf1);
- vfree(ubi->peb_buf2);
+ vfree(ubi->peb_buf);
if (ref)
put_device(&ubi->dev);
else
ubi_debugfs_exit_dev(ubi);
uif_close(ubi);
ubi_wl_close(ubi);
- free_internal_volumes(ubi);
+ ubi_free_internal_volumes(ubi);
vfree(ubi->vtbl);
put_mtd_device(ubi->mtd);
ubi_debugging_exit_dev(ubi);
- vfree(ubi->peb_buf1);
- vfree(ubi->peb_buf2);
+ vfree(ubi->peb_buf);
ubi_msg("mtd%d is detached from ubi%d", ubi->mtd->index, ubi->ubi_num);
put_device(&ubi->dev);
return 0;
git.openpandora.org / pandora-kernel.git / blobdiff