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* block: add partition uuid into uevent as "PARTUUID"Konstantin Khlebnikov2024-10-221-0/+2
| | | | | | | | | | | | | | | | | Both most common formats have uuid in addition to partition name: GPT: standard uuid xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx DOS: 4 byte disk signature and 1 byte partition xxxxxxxx-xx Tools from util-linux use the same notation for them. Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Reviewed-by: Kyle Fortin <kyle.fortin@oracle.com> [dianders: rebased to modern kernels] Signed-off-by: Douglas Anderson <dianders@google.com> Signed-off-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20241004171340.v2.1.I938c91d10e454e841fdf5d64499a8ae8514dc004@changeid Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: add support for partition table defined in OFChristian Marangi2024-10-221-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for partition table defined in Device Tree. Similar to how it's done with MTD, add support for defining a fixed partition table in device tree. A common scenario for this is fixed block (eMMC) embedded devices that have no MBR or GPT partition table to save storage space. Bootloader access the block device with absolute address of data. This is to complete the functionality with an equivalent implementation with providing partition table with bootargs, for case where the booargs can't be modified and tweaking the Device Tree is the only solution to have an usabe partition table. The implementation follow the fixed-partitions parser used on MTD devices where a "partitions" node is expected to be declared with "fixed-partitions" compatible in the OF node of the disk device (mmc-card for eMMC for example) and each child node declare a label and a reg with offset and size. If label is not declared, the node name is used as fallback. Eventually is also possible to declare the read-only property to flag the partition as read-only. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20241002221306.4403-6-ansuelsmth@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: add support for defining read-only partitionsChristian Marangi2024-10-221-0/+3
| | | | | | | | | | | Add support for defining read-only partitions and complete support for it in the cmdline partition parser as the additional "ro" after a partition is scanned but never actually applied. Signed-off-by: Christian Marangi <ansuelsmth@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20241002221306.4403-2-ansuelsmth@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: fix potential invalid pointer dereference in blk_add_partitionRiyan Dhiman2024-09-121-3/+5
| | | | | | | | | | | | | | | | | | | | | The blk_add_partition() function initially used a single if-condition (IS_ERR(part)) to check for errors when adding a partition. This was modified to handle the specific case of -ENXIO separately, allowing the function to proceed without logging the error in this case. However, this change unintentionally left a path where md_autodetect_dev() could be called without confirming that part is a valid pointer. This commit separates the error handling logic by splitting the initial if-condition, improving code readability and handling specific error scenarios explicitly. The function now distinguishes the general error case from -ENXIO without altering the existing behavior of md_autodetect_dev() calls. Fixes: b72053072c0b (block: allow partitions on host aware zone devices) Signed-off-by: Riyan Dhiman <riyandhiman14@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240911132954.5874-1-riyandhiman14@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'pull-bd_flags-2' of ↵Linus Torvalds2024-05-211-6/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull bdev flags update from Al Viro: "Compactifying bdev flags. We can easily have up to 24 flags with sane atomicity, _without_ pushing anything out of the first cacheline of struct block_device" * tag 'pull-bd_flags-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: bdev: move ->bd_make_it_fail to ->__bd_flags bdev: move ->bd_ro_warned to ->__bd_flags bdev: move ->bd_has_subit_bio to ->__bd_flags bdev: move ->bd_write_holder into ->__bd_flags bdev: move ->bd_read_only to ->__bd_flags bdev: infrastructure for flags wrapper for access to ->bd_partno Use bdev_is_paritition() instead of open-coding it
| * wrapper for access to ->bd_partnoAl Viro2024-05-021-6/+6
| | | | | | | | | | | | On the next step it's going to get folded into a field where flags will go. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge tag 'pull-bd_inode-1' of ↵Linus Torvalds2024-05-211-4/+4
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull bdev bd_inode updates from Al Viro: "Replacement of bdev->bd_inode with sane(r) set of primitives by me and Yu Kuai" * tag 'pull-bd_inode-1' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RIP ->bd_inode dasd_format(): killing the last remaining user of ->bd_inode nilfs_attach_log_writer(): use ->bd_mapping->host instead of ->bd_inode block/bdev.c: use the knowledge of inode/bdev coallocation gfs2: more obvious initializations of mapping->host fs/buffer.c: massage the remaining users of ->bd_inode to ->bd_mapping blk_ioctl_{discard,zeroout}(): we only want ->bd_inode->i_mapping here... grow_dev_folio(): we only want ->bd_inode->i_mapping there use ->bd_mapping instead of ->bd_inode->i_mapping block_device: add a pointer to struct address_space (page cache of bdev) missing helpers: bdev_unhash(), bdev_drop() block: move two helpers into bdev.c block2mtd: prevent direct access of bd_inode dm-vdo: use bdev_nr_bytes(bdev) instead of i_size_read(bdev->bd_inode) blkdev_write_iter(): saner way to get inode and bdev bcachefs: remove dead function bdev_sectors() ext4: remove block_device_ejected() erofs_buf: store address_space instead of inode erofs: switch erofs_bread() to passing offset instead of block number
| * | use ->bd_mapping instead of ->bd_inode->i_mappingAl Viro2024-05-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Just the low-hanging fruit... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Link: https://lore.kernel.org/r/20240411145346.2516848-2-viro@zeniv.linux.org.uk Signed-off-by: Christian Brauner <brauner@kernel.org>
| * | missing helpers: bdev_unhash(), bdev_drop()Al Viro2024-05-031-3/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | bdev_unhash(): make block device invisible to lookups by device number bdev_drop(): drop reference to associated inode. Both are internal, for use by genhd and partition-related code - similar to bdev_add(). The logics in there (especially the lifetime-related parts of it) ought to be cleaned up, but that's a separate story; here we just encapsulate getting to associated inode. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* / block: add a disk_has_partscan helperChristoph Hellwig2024-05-031-4/+1
|/ | | | | | | | | | | Add a helper to check if partition scanning is enabled instead of open coding the check in a few places. This now always checks for the hidden flag even if all but one of the callers are never reachable for hidden gendisks. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240502130033.1958492-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: move capacity validation to blkpg_do_ioctl()Li Lingfeng2024-03-061-11/+0
| | | | | | | | | | | | | | Commit 6d4e80db4ebe ("block: add capacity validation in bdev_add_partition()") add check of partition's start and end sectors to prevent exceeding the size of the disk when adding partitions. However, there is still no check for resizing partitions now. Move the check to blkpg_do_ioctl() to cover resizing partitions. Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240305032132.548958-1-lilingfeng@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: Move checking GENHD_FL_NO_PART to bdev_add_partition()Li Lingfeng2024-01-221-0/+5
| | | | | | | | | | | | | | | | Commit 1a721de8489f ("block: don't add or resize partition on the disk with GENHD_FL_NO_PART") prevented all operations about partitions on disks with GENHD_FL_NO_PART in blkpg_do_ioctl() since they are meaningless. However, it changed error code in some scenarios. So move checking GENHD_FL_NO_PART to bdev_add_partition() to eliminate impact. Fixes: 1a721de8489f ("block: don't add or resize partition on the disk with GENHD_FL_NO_PART") Reported-by: Allison Karlitskaya <allison.karlitskaya@redhat.com> Closes: https://lore.kernel.org/all/CAOYeF9VsmqKMcQjo1k6YkGNujwN-nzfxY17N3F-CMikE1tYp+w@mail.gmail.com/ Signed-off-by: Li Lingfeng <lilingfeng3@huawei.com> Reviewed-by: Yu Kuai <yukuai3@huawei.com> Link: https://lore.kernel.org/r/20240118130401.792757-1-lilingfeng@huaweicloud.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: print symbolic error name instead of error codeChristian Heusel2024-01-121-2/+2
| | | | | | | | | | | | | | Utilize the %pe print specifier to get the symbolic error name as a string (i.e "-ENOMEM") in the log message instead of the error code to increase its readablility. This change was suggested in https://lore.kernel.org/all/92972476-0b1f-4d0a-9951-af3fc8bc6e65@suswa.mountain/ Signed-off-by: Christian Heusel <christian@heusel.eu> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20240111231521.1596838-1-christian@heusel.eu Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: remove support for the host aware zone modelChristoph Hellwig2023-12-201-10/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | When zones were first added the SCSI and ATA specs, two different models were supported (in addition to the drive managed one that is invisible to the host): - host managed where non-conventional zones there is strict requirement to write at the write pointer, or else an error is returned - host aware where a write point is maintained if writes always happen at it, otherwise it is left in an under-defined state and the sequential write preferred zones behave like conventional zones (probably very badly performing ones, though) Not surprisingly this lukewarm model didn't prove to be very useful and was finally removed from the ZBC and SBC specs (NVMe never implemented it). Due to to the easily disappearing write pointer host software could never rely on the write pointer to actually be useful for say recovery. Fortunately only a few HDD prototypes shipped using this model which never made it to mass production. Drop the support before it is too late. Note that any such host aware prototype HDD can still be used with Linux as we'll now treat it as a conventional HDD. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20231217165359.604246-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: WARN_ON_ONCE() when we remove active partitionsChristian Brauner2023-10-281-13/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The logic for disk->open_partitions is: blkdev_get_by_*() -> bdev_is_partition() -> blkdev_get_part() -> blkdev_get_whole() // bdev_whole->bd_openers++ -> if (part->bd_openers == 0) disk->open_partitions++ part->bd_openers In other words, when we first claim/open a partition we increment disk->open_partitions and only when all part->bd_openers are closed will disk->open_partitions be zero. That should mean that disk->open_partitions is always > 0 as long as there's anyone that has an open partition. So the check for disk->open_partitions should mean that we can never remove an active partition that has a holder and holder ops set. Assert that in the code. The main disk isn't removed so that check doesn't work for disk->part0 which is what we want. After all we only care about partition not about the main disk. Link: https://lore.kernel.org/r/20231017184823.1383356-3-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christian Brauner <brauner@kernel.org>
* block: simplify bdev_del_partition()Christian Brauner2023-10-281-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BLKPG_DEL_PARTITION refuses to delete partitions that still have openers, i.e., that has an elevated @bdev->bd_openers count. If a device is claimed by setting @bdev->bd_holder and @bdev->bd_holder_ops @bdev->bd_openers and @bdev->bd_holders are incremented. @bdev->bd_openers is effectively guaranteed to be >= @bdev->bd_holders. So as long as @bdev->bd_openers isn't zero we know that this partition is still in active use and that there might still be @bdev->bd_holder and @bdev->bd_holder_ops set. The only current example is @fs_holder_ops for filesystems. But that means bdev_mark_dead() which calls into bdev->bd_holder_ops->mark_dead::fs_bdev_mark_dead() is a nop. As long as there's an elevated @bdev->bd_openers count we can't delete the partition and if there isn't an elevated @bdev->bd_openers count then there's no @bdev->bd_holder or @bdev->bd_holder_ops. So simply open-code what we need to do. This gets rid of one more instance where we acquire s_umount under @disk->open_mutex. Link: https://lore.kernel.org/r/20231016-fototermin-umriss-59f1ea6c1fe6@brauner Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20231017184823.1383356-2-hch@lst.de Reviewed-by: Ming Lei <ming.lei@redhat.com> Signed-off-by: Christian Brauner <brauner@kernel.org>
* block: consolidate __invalidate_device and fsync_bdevChristoph Hellwig2023-08-211-4/+1
| | | | | | | | | | | | | | | | | | | | | | | We currently have two interfaces that take a block_devices and the find a mounted file systems to flush or invaldidate data on it. Both are a bit problematic because they only work for the "main" block devices that is used as s_dev for the super_block, and because they don't call into the file system at all. Merge the two into a new bdev_mark_dead helper that does both the syncing and invalidation and which is properly documented. This is in preparation of merging the functionality into the ->mark_dead holder operation so that it will work on additional block devices used by a file systems and give us a single entry point for invalidation of dead devices or media. Note that a single standalone fsync_bdev call for an obscure ioctl remains for now, but that one will also be deal with in a bit. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Josef Bacik <josef@toxicpanda.com> Message-Id: <20230811100828.1897174-14-hch@lst.de> Signed-off-by: Christian Brauner <brauner@kernel.org>
* block: add capacity validation in bdev_add_partition()Min Li2023-06-201-0/+11
| | | | | | | | | | | | | | In the function bdev_add_partition(),there is no check that the start and end sectors exceed the size of the disk before calling add_partition. When we call the block's ioctl interface directly to add a partition, and the capacity of the disk is set to 0 by driver,the command will continue to execute. Signed-off-by: Min Li <min15.li@samsung.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Link: https://lore.kernel.org/r/20230619091214.31615-1-min15.li@samsung.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: remove blk_drop_partitionsChristoph Hellwig2023-06-051-12/+4
| | | | | | | | | | | There is only a single caller left, so fold the loop into that. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Link: https://lore.kernel.org/r/20230601094459.1350643-9-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: delete partitions later in del_gendiskChristoph Hellwig2023-06-051-7/+12
| | | | | | | | | | | | | | | | | | | Delay dropping the block_devices for partitions in del_gendisk until after the call to blk_mark_disk_dead, so that we can implementat notification of removed devices in blk_mark_disk_dead. This requires splitting a lower-level drop_partition helper out of delete_partition and using that from del_gendisk, while having a common loop for the whole device and partitions that calls remove_inode_hash, fsync_bdev and __invalidate_device before the call to blk_mark_disk_dead. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Link: https://lore.kernel.org/r/20230601094459.1350643-8-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: unhash the inode earlier in delete_partitionChristoph Hellwig2023-06-051-6/+6
| | | | | | | | | | | | | Move the call to remove_inode_hash to the beginning of delete_partition, as we want to prevent opening a block_device that is about to be removed ASAP. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Acked-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Link: https://lore.kernel.org/r/20230601094459.1350643-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: constify the whole_disk device_attributeThomas Weißschuh2023-05-301-1/+1
| | | | | | | | The struct is never modified so it can be const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20230419-const-partition-v3-4-4e14e48be367@weissschuh.net Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: constify struct part_attr_groupThomas Weißschuh2023-05-301-1/+1
| | | | | | | | The struct is never modified so it can be const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20230419-const-partition-v3-3-4e14e48be367@weissschuh.net Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: constify struct part_type part_typeThomas Weißschuh2023-05-301-1/+1
| | | | | | | | The struct is never modified so it can be const. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20230419-const-partition-v3-2-4e14e48be367@weissschuh.net Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: constify partition prober arrayThomas Weißschuh2023-05-301-1/+1
| | | | | | | | | | The array is never modified so it can be const. Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202304191640.SkNk7kVN-lkp@intel.com/ Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20230419-const-partition-v3-1-4e14e48be367@weissschuh.net Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: Cleanup set_capacity()/bdev_set_nr_sectors()Damien Le Moal2023-04-241-8/+0
| | | | | | | | | | | | | | | The code for setting a block device capacity (bd_nr_sectors field of struct block_device) is duplicated in set_capacity() and bdev_set_nr_sectors(). Clean this up by making bdev_set_nr_sectors() a block layer internal function defined in block/bdev.c instead of having this function statically defined in block/partitions/core.c. With this change, set_capacity() implementation can be simplified to only calling bdev_set_nr_sectors(). Signed-off-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20230424131318.79935-1-dlemoal@kernel.org Signed-off-by: Jens Axboe <axboe@kernel.dk>
* driver core: make struct device_type.uevent() take a const *Greg Kroah-Hartman2023-01-271-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The uevent() callback in struct device_type should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Andreas Noever <andreas.noever@gmail.com> Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Chaitanya Kulkarni <kch@nvidia.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Frank Rowand <frowand.list@gmail.com> Cc: Ira Weiny <ira.weiny@intel.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jilin Yuan <yuanjilin@cdjrlc.com> Cc: Jiri Slaby <jirislaby@kernel.org> Cc: Len Brown <lenb@kernel.org> Cc: Mark Gross <markgross@kernel.org> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Maximilian Luz <luzmaximilian@gmail.com> Cc: Michael Jamet <michael.jamet@intel.com> Cc: Ming Lei <ming.lei@redhat.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Sakari Ailus <sakari.ailus@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: Sean Young <sean@mess.org> Cc: Stefan Richter <stefanr@s5r6.in-berlin.de> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Won Chung <wonchung@google.com> Cc: Yehezkel Bernat <YehezkelShB@gmail.com> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> # for Thunderbolt Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Acked-by: Wolfram Sang <wsa@kernel.org> Acked-by: Vinod Koul <vkoul@kernel.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Link: https://lore.kernel.org/r/20230111113018.459199-6-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* block: don't add partitions if GD_SUPPRESS_PART_SCAN is setMing Lei2022-09-031-0/+3
| | | | | | | | | | | | | | | | | | Commit b9684a71fca7 ("block, loop: support partitions without scanning") adds GD_SUPPRESS_PART_SCAN for replacing part function of GENHD_FL_NO_PART. But looks blk_add_partitions() is missed, since loop doesn't want to add partitions if GENHD_FL_NO_PART was set. And it causes regression on libblockdev (as called from udisks) which operates with the LO_FLAGS_PARTSCAN. Fixes the issue by not adding partitions if GD_SUPPRESS_PART_SCAN is set. Fixes: b9684a71fca7 ("block, loop: support partitions without scanning") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20220823103819.395776-1-ming.lei@redhat.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'folio-6.0' of git://git.infradead.org/users/willy/pagecacheLinus Torvalds2022-08-031-13/+7
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull folio updates from Matthew Wilcox: - Fix an accounting bug that made NR_FILE_DIRTY grow without limit when running xfstests - Convert more of mpage to use folios - Remove add_to_page_cache() and add_to_page_cache_locked() - Convert find_get_pages_range() to filemap_get_folios() - Improvements to the read_cache_page() family of functions - Remove a few unnecessary checks of PageError - Some straightforward filesystem conversions to use folios - Split PageMovable users out from address_space_operations into their own movable_operations - Convert aops->migratepage to aops->migrate_folio - Remove nobh support (Christoph Hellwig) * tag 'folio-6.0' of git://git.infradead.org/users/willy/pagecache: (78 commits) fs: remove the NULL get_block case in mpage_writepages fs: don't call ->writepage from __mpage_writepage fs: remove the nobh helpers jfs: stop using the nobh helper ext2: remove nobh support ntfs3: refactor ntfs_writepages mm/folio-compat: Remove migration compatibility functions fs: Remove aops->migratepage() secretmem: Convert to migrate_folio hugetlb: Convert to migrate_folio aio: Convert to migrate_folio f2fs: Convert to filemap_migrate_folio() ubifs: Convert to filemap_migrate_folio() btrfs: Convert btrfs_migratepage to migrate_folio mm/migrate: Add filemap_migrate_folio() mm/migrate: Convert migrate_page() to migrate_folio() nfs: Convert to migrate_folio btrfs: Convert btree_migratepage to migrate_folio mm/migrate: Convert expected_page_refs() to folio_expected_refs() mm/migrate: Convert buffer_migrate_page() to buffer_migrate_folio() ...
| * block: Convert read_part_sector() to use a folioMatthew Wilcox (Oracle)2022-08-021-5/+5
| | | | | | | | | | | | | | This relatively straightforward converion saves a call to compound_head() hidden inside put_page(). Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
| * block: Use PAGE_SECTORS_SHIFTMatthew Wilcox (Oracle)2022-08-021-2/+1
| | | | | | | | | | | | | | The bare use of '9' confuses some people. We also don't need this cast, since the compiler does exactly that cast for us. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
| * block: Handle partition read errors more consistentlyMatthew Wilcox (Oracle)2022-08-021-1/+1
| | | | | | | | | | | | | | Set p->v to NULL if we try to read beyond the end of the disk, just like we do if we get an error returned from trying to read the disk. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
| * block: Simplify read_part_sector()Matthew Wilcox (Oracle)2022-08-021-2/+1
| | | | | | | | | | | | | | That rather complicated expression is just trying to find the offset of this sector within a page, and there are easier ways to express that. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
| * block: Remove check of PageErrorMatthew Wilcox (Oracle)2022-06-291-4/+0
| | | | | | | | | | | | | | If read_mapping_page() sees a page with PageError set, it returns a PTR_ERR(). Checking PageError again is simply dead code. Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
* | block: pass a gendisk to blk_queue_set_zonedChristoph Hellwig2022-07-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Prepare for storing the zone related field in struct gendisk instead of struct request_queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Damien Le Moal <damien.lemoal@opensource.wdc.com> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20220706070350.1703384-7-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | block: simplify blktrace sysfs attribute creationChristoph Hellwig2022-06-281-1/+0
|/ | | | | | | | | | Add the trace attributes to the default gendisk attributes, just like we already do for partitions. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20220628171850.1313069-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: turn bdev->bd_openers into an atomic_tChristoph Hellwig2022-04-181-1/+1
| | | | | | | | | | | | | All manipulation of bd_openers is under disk->open_mutex and will remain so for the foreseeable future. But at least one place reads it without the lock (blkdev_get) and there are more to be added. So make sure the compiler does not do turn the increments and decrements into non-atomic sequences by using an atomic_t. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20220330052917.2566582-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: use bdev_discard_alignment in part_discard_alignment_showChristoph Hellwig2022-04-181-5/+1
| | | | | | | | | Use the bdev based alignment helper instead of open coding it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20220415045258.199825-21-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: use bdev_alignment_offset in part_alignment_offset_showChristoph Hellwig2022-04-181-5/+1
| | | | | | | | | | | | | Replace the open coded offset calculation with the proper helper. This is an ABI change in that the -1 for a misaligned partition is properly propagated, which can be considered a bug fix and matches what is done on the whole device. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Link: https://lore.kernel.org/r/20220415045258.199825-17-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: remove genhd.hChristoph Hellwig2022-02-021-1/+0
| | | | | | | | | | | | There is no good reason to keep genhd.h separate from the main blkdev.h header that includes it. So fold the contents of genhd.h into blkdev.h and remove genhd.h entirely. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Chaitanya Kulkarni <kch@nvidia.com> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Link: https://lore.kernel.org/r/20220124093913.742411-4-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: remove GENHD_FL_EXT_DEVTChristoph Hellwig2021-11-291-5/+4
| | | | | | | | | | | | | | | All modern drivers can support extra partitions using the extended dev_t. In fact except for the ioctl method drivers never even see partitions in normal operation. So remove the GENHD_FL_EXT_DEVT and allow extra partitions for all block devices that do support partitions, and require those that do not support partitions to explicit disallow them using GENHD_FL_NO_PART. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-12-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: move GENHD_FL_NATIVE_CAPACITY to disk->stateChristoph Hellwig2021-11-291-9/+6
| | | | | | | | | The flag to indicate an unlocked native capacity is dynamic state, not a driver capability flag, so move it to disk->state. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211122130625.1136848-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* Merge tag 'for-5.16/bdev-size-2021-10-29' of git://git.kernel.dk/linux-blockLinus Torvalds2021-11-011-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull bdev size cleanups from Jens Axboe: "Clean up the bdev size handling with new bdev_nr_bytes() helper" * tag 'for-5.16/bdev-size-2021-10-29' of git://git.kernel.dk/linux-block: (34 commits) partitions/ibm: use bdev_nr_sectors instead of open coding it partitions/efi: use bdev_nr_bytes instead of open coding it block/ioctl: use bdev_nr_sectors and bdev_nr_bytes block: cache inode size in bdev udf: use sb_bdev_nr_blocks reiserfs: use sb_bdev_nr_blocks ntfs: use sb_bdev_nr_blocks jfs: use sb_bdev_nr_blocks ext4: use sb_bdev_nr_blocks block: add a sb_bdev_nr_blocks helper block: use bdev_nr_bytes instead of open coding it in blkdev_fallocate squashfs: use bdev_nr_bytes instead of open coding it reiserfs: use bdev_nr_bytes instead of open coding it pstore/blk: use bdev_nr_bytes instead of open coding it ntfs3: use bdev_nr_bytes instead of open coding it nilfs2: use bdev_nr_bytes instead of open coding it nfs/blocklayout: use bdev_nr_bytes instead of open coding it jfs: use bdev_nr_bytes instead of open coding it hfsplus: use bdev_nr_sectors instead of open coding it hfs: use bdev_nr_sectors instead of open coding it ...
| * block: cache inode size in bdevJens Axboe2021-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | Reading the inode size brings in a new cacheline for IO submit, and it's in the hot path being checked for every single IO. When doing millions of IOs per core per second, this is noticeable overhead. Cache the nr_sectors in the bdev itself. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | Merge tag 'for-5.16/block-2021-10-29' of git://git.kernel.dk/linux-blockLinus Torvalds2021-11-011-2/+3
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull block updates from Jens Axboe: - mq-deadline accounting improvements (Bart) - blk-wbt timer fix (Andrea) - Untangle the block layer includes (Christoph) - Rework the poll support to be bio based, which will enable adding support for polling for bio based drivers (Christoph) - Block layer core support for multi-actuator drives (Damien) - blk-crypto improvements (Eric) - Batched tag allocation support (me) - Request completion batching support (me) - Plugging improvements (me) - Shared tag set improvements (John) - Concurrent queue quiesce support (Ming) - Cache bdev in ->private_data for block devices (Pavel) - bdev dio improvements (Pavel) - Block device invalidation and block size improvements (Xie) - Various cleanups, fixes, and improvements (Christoph, Jackie, Masahira, Tejun, Yu, Pavel, Zheng, me) * tag 'for-5.16/block-2021-10-29' of git://git.kernel.dk/linux-block: (174 commits) blk-mq-debugfs: Show active requests per queue for shared tags block: improve readability of blk_mq_end_request_batch() virtio-blk: Use blk_validate_block_size() to validate block size loop: Use blk_validate_block_size() to validate block size nbd: Use blk_validate_block_size() to validate block size block: Add a helper to validate the block size block: re-flow blk_mq_rq_ctx_init() block: prefetch request to be initialized block: pass in blk_mq_tags to blk_mq_rq_ctx_init() block: add rq_flags to struct blk_mq_alloc_data block: add async version of bio_set_polled block: kill DIO_MULTI_BIO block: kill unused polling bits in __blkdev_direct_IO() block: avoid extra iter advance with async iocb block: Add independent access ranges support blk-mq: don't issue request directly in case that current is to be blocked sbitmap: silence data race warning blk-cgroup: synchronize blkg creation against policy deactivation block: refactor bio_iov_bvec_set() block: add single bio async direct IO helper ...
| * block: convert the rest of block to bdev_get_queuePavel Begunkov2021-10-181-2/+2
| | | | | | | | | | | | | | | | | | Convert bdev->bd_disk->queue to bdev_get_queue(), it's uses a cached queue pointer and so is faster. Signed-off-by: Pavel Begunkov <asml.silence@gmail.com> Link: https://lore.kernel.org/r/addf6ea988c04213697ba3684c853e4ed7642a39.1634219547.git.asml.silence@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
| * block: drop unused includes in <linux/genhd.h>Christoph Hellwig2021-10-181-0/+1
| | | | | | | | | | | | | | | | | | | | Drop various include not actually used in genhd.h itself, and move the remaning includes closer together. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20210920123328.1399408-15-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* | block: fix incorrect references to disk objectsZqiang2021-10-181-0/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding partitions to the disk, the reference count of the disk object is increased. then alloc partition device and called device_add(), if the device_add() return error, the reference count of the disk object will be reduced twice, at put_device(pdev) and put_disk(disk). this leads to the end of the object's life cycle prematurely, and trigger following calltrace. __init_work+0x2d/0x50 kernel/workqueue.c:519 synchronize_rcu_expedited+0x3af/0x650 kernel/rcu/tree_exp.h:847 bdi_remove_from_list mm/backing-dev.c:938 [inline] bdi_unregister+0x17f/0x5c0 mm/backing-dev.c:946 release_bdi+0xa1/0xc0 mm/backing-dev.c:968 kref_put include/linux/kref.h:65 [inline] bdi_put+0x72/0xa0 mm/backing-dev.c:976 bdev_free_inode+0x11e/0x220 block/bdev.c:408 i_callback+0x3f/0x70 fs/inode.c:226 rcu_do_batch kernel/rcu/tree.c:2508 [inline] rcu_core+0x76d/0x16c0 kernel/rcu/tree.c:2743 __do_softirq+0x1d7/0x93b kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu kernel/softirq.c:636 [inline] irq_exit_rcu+0xf2/0x130 kernel/softirq.c:648 sysvec_apic_timer_interrupt+0x93/0xc0 making disk is NULL when calling put_disk(). Reported-by: Hao Sun <sunhao.th@gmail.com> Signed-off-by: Zqiang <qiang.zhang1211@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20211018103422.2043-1-qiang.zhang1211@gmail.com Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: free the extended dev_t minor laterChristoph Hellwig2021-08-161-2/+0
| | | | | | | | | | The dev_t is used as the inode hash, so we should only released it once then block device inode is gone from the inode cache. Move it to bdev_free_inode to ensure that. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210816122614.601358-2-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
* block: pass a gendisk to bdev_resize_partitionChristoph Hellwig2021-08-121-6/+6
| | | | | | | | | bdev_resize_partition can only operate on the whole device. Make that clear by passing a gendisk instead of a block_device. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20210810154512.1809898-5-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
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