kernel/linux.git/drivers/mtd/ubi/vtbl.c, branch linux-4.16.y

UBI: introduce the VID buffer concept

2016-10-02T20:48:14+00:00

Currently, all VID headers are allocated and freed using the ubi_zalloc_vid_hdr() and ubi_free_vid_hdr() function. These functions make sure to align allocation on ubi->vid_hdr_alsize and adjust the vid_hdr pointer to match the ubi->vid_hdr_shift requirements. This works fine, but is a bit convoluted. Moreover, the future introduction of LEB consolidation (needed to support MLC/TLC NANDs) will allows a VID buffer to contain more than one VID header. Hence the creation of a ubi_vid_io_buf struct to attach extra information to the VID header. We currently only store the actual pointer of the underlying buffer, but will soon add the number of VID headers contained in the buffer. Signed-off-by: Boris Brezillon Signed-off-by: Richard Weinberger

UBI: provide helpers to allocate and free aeb elements

2016-10-02T20:48:14+00:00

This not only hides the aeb allocation internals (which is always good in case we ever want to change the allocation system), but also helps us factorize the initialization of some common fields (ec and pnum). Signed-off-by: Boris Brezillon Signed-off-by: Richard Weinberger

UBI: return ENOSPC if no enough space available

2015-09-29T10:47:05+00:00

UBI: attaching mtd1 to ubi0 UBI: scanning is finished UBI error: init_volumes: not enough PEBs, required 706, available 686 UBI error: ubi_wl_init: no enough physical eraseblocks (-20, need 1) UBI error: ubi_attach_mtd_dev: failed to attach mtd1, error -12 <= NOT ENOMEM UBI error: ubi_init: cannot attach mtd1 If available PEBs are not enough when initializing volumes, return -ENOSPC directly. If available PEBs are not enough when initializing WL, return -ENOSPC instead of -ENOMEM. Cc: stable@vger.kernel.org Signed-off-by: Sheng Yong Signed-off-by: Richard Weinberger Reviewed-by: David Gstir

UBI: add a helper function for updatting on-flash layout volumes

2015-06-02T09:47:51+00:00

Signed-off-by: Sheng Yong Signed-off-by: Richard Weinberger

UBI: extend UBI layer debug/messaging capabilities - cosmetics

2015-01-28T15:09:09+00:00

Some cosmetic fixes to the patch "UBI: Extend UBI layer debug/messaging capabilities". Signed-off-by: Tanya Brokhman Signed-off-by: Artem Bityutskiy

UBI: vtbl: Use ubi_eba_atomic_leb_change()

2014-11-07T10:08:51+00:00

This is more a cosmetic change than a fix. By using ubi_eba_atomic_leb_change() we can guarantee that the first VTBL record is always correct and we don't really need the second one anymore. But we have to keep the second one to not break anything. Artem: add a comment Signed-off-by: Richard Weinberger Signed-off-by: Artem Bityutskiy

UBI: Extend UBI layer debug/messaging capabilities

2014-11-07T10:08:51+00:00

If there is more then one UBI device mounted, there is no way to distinguish between messages from different UBI devices. Add device number to all ubi layer message types. The R/O block driver messages were replaced by pr_* since ubi_device structure is not used by it. Amended a bit by Artem. Signed-off-by: Tanya Brokhman Signed-off-by: Artem Bityutskiy

UBI: init_volumes: Ignore volumes with no LEBs

2014-07-19T06:53:52+00:00

UBI assumes that ubi_attach_info will only contain ubi_ainf_volume structures for volumes with at least one LEB. In scanning mode this is true because UBI can nicely create a ubi_ainf_volume on demand while creating the EBA table. For fastmap this is not true, the fastmap on-flash structure has a list of all volumes, the ubi_ainf_volume structures are created from this list. So it can happen that an empty volume ends up in init_volumes(). We can easely deal with that by looking into ->leb_count too. Signed-off-by: Richard Weinberger Signed-off-by: Artem Bityutskiy

UBI: introduce helpers dbg_chk_{io, gen}

2012-12-10T11:38:59+00:00

With this patch code is a bit more readable and there's no generated code or functionality impact. Furthermore, this abstracts implementation details and will allow to change ubi_debug_info in a less invasive way. Signed-off-by: Ezequiel Garcia Signed-off-by: Artem Bityutskiy

Merge tag 'upstream-3.7-rc1' of git://git.infradead.org/linux-ubi

2012-10-03T03:49:15+00:00

Pull UBI changes from Artem Bityutskiy: "The main change is the way we reserve eraseblocks for bad blocks handling. We used to reserve 2% of the partition, but now we are more aggressive and we reserve 2% of the entire chip, which is what actually manufacturers specify in data sheets. We introduced an option to users to override the default, though. There are a couple of fixes as well, and a number of cleanups." * tag 'upstream-3.7-rc1' of git://git.infradead.org/linux-ubi: (24 commits) UBI: fix trivial typo 'it' => 'is' UBI: load after mtd device drivers UBI: print less UBI: use pr_ helper instead of printk UBI: comply with coding style UBI: erase free PEB with bitflip in EC header UBI: fix autoresize handling in R/O mode UBI: add max_beb_per1024 to attach ioctl UBI: allow specifying bad PEBs limit using module parameter UBI: check max_beb_per1024 value in ubi_attach_mtd_dev UBI: prepare for max_beb_per1024 module parameter addition UBI: introduce MTD_PARAM_MAX_COUNT UBI: separate bad_peb_limit in a function arm: sam9_l9260_defconfig: correct CONFIG_MTD_UBI_BEB_LIMIT UBI: use the whole MTD device size to get bad_peb_limit mtd: mtdparts: introduce mtd_get_device_size mtd: mark mtd_is_partition argument as constant arm: sam9_l9260_defconfig: remove non-existing config option UBI: kill CONFIG_MTD_UBI_BEB_RESERVE UBI: limit amount of reserved eraseblocks for bad PEB handling ...