- 16 11月, 2020 40 次提交
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to set the size of both the disk and block device. This also gets the uevent notifications for the resize for free. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to set the size of both the disk and block device. This also gets the uevent notifications for the resize for free. Signed-off-by: NChristoph Hellwig <hch@lst.de> Acked-by: NJack Wang <jinpu.wang@cloud.ionos.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to set the size of both the disk and block device. This also gets the uevent notifications for the resize for free. Signed-off-by: NChristoph Hellwig <hch@lst.de> Acked-by: NIlya Dryomov <idryomov@gmail.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to set the size of both the disk and block device. This also gets the uevent notifications for the resize for free. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use the block layer helper to update both the disk and block device sizes. Contrary to the name no notification is sent in this case, as a size 0 is special cased. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to set the size of both the disk and block device. This also gets the uevent notifications for the resize for free. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to set the size of both the disk and block device. This also gets the uevent notifications for the resize for free. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Updating the block device size from irq context can lead to torn writes of the 64-bit value, and prevents us from using normal process context locking primitives to serialize access to the 64-bit nr_sectors value. Defer the set_capacity to the already existing workqueue handler, where it can be merged with the update of the block device size by using set_capacity_and_notify. As an extra bonus this also adds proper uevent notifications for the resize. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_capacity_and_notify to update the disk and block device sizes and send a RESIZE uevent to userspace. Note that blktests relies on uevents being sent also for updates that did not change the device size, so the explicit kobject_uevent remains for that case. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Move the validation of the block from the callers into nbd_set_size. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Merge nbd_size_set and nbd_size_update into a single function that also updates the nbd_config fields. This new function takes the device size in bytes as the first argument, and the blocksize as the second argument, simplifying the calculations required in most callers. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
nbd_size_update is about to acquire a few more callers, so lift the check into the function. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Block driver have no business setting the file system concept of a block size. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NJosef Bacik <josef@toxicpanda.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
The update_bdev argument is always set to true, so remove it. Also rename the function to the slighly less verbose set_capacity_and_notify, as propagating the disk size to the block device isn't really revalidation. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Reviewed-by: NPetr Vorel <pvorel@suse.cz> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
This avoids the extra call to revalidate_disk_size in sd_rescan and is otherwise a no-op because the size did not change, or we are in the probe path. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Acked-by: NMartin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
There is no good reason to call revalidate_disk_size separately. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
There is no good reason to call revalidate_disk_size separately. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
__invalidate_device without the kill_dirty parameter just invalidates various clean entries in caches, which doesn't really help us with anything, but can cause all kinds of horrible lock orders due to how it calls into the file system. The only reason this hasn't been a major issue is because so many people use partitions, for which no invalidation was performed anyway. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Switch the comment to talk about __register_blkdev instead of register_blkdev and document the new probe parameter. Fixes: 3da1a61e7046 ("block: add an optional probe callback to major_names") Reported-by: NStephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Now that bdev_map is only used for finding gendisks, we can use a simple xarray instead of the regions tracking structure for it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Reviewed-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use separate gendisks (which share a tag_set) for the different operating modes instead of redirecting the gendisk lookup using a probe callback. This avoids potential problems with aliased block_device instances and will eventually allow for removing the blk_register_region framework. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
reindent the driver using Lident as the code style was far away from normal Linux code. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
The Atari floppy driver usually autodetects the media when used with the ormal /dev/fd? devices, which also are the only nodes created by udev. But it also supports various aliases that force a given media format. That is currently supported using the blk_register_region framework which finds the floppy gendisk even for a 'mismatched' dev_t. The problem with this (besides the code complexity) is that it creates multiple struct block_device instances for the whole device of a single gendisk, which can lead to interesting issues in code not aware of that fact. To fix this just create a separate gendisk for each of the aliases if they are accessed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use separate gendisks (which share a tag_set) for the native Amgiga vs the MS-DOS mode instead of redirecting the gendisk lookup using a probe callback. This avoids potential problems with aliased block_device instances and will eventually allow for removing the blk_register_region framework. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
The floppy driver usually autodetects the media when used with the normal /dev/fd? devices, which also are the only nodes created by udev. But it also supports various aliases that force a given media format. That is currently supported using the blk_register_region framework which finds the floppy gendisk even for a 'mismatched' dev_t. The problem with this (besides the code complexity) is that it creates multiple struct block_device instances for the whole device of a single gendisk, which can lead to interesting issues in code not aware of that fact. To fix this just create a separate gendisk for each of the aliases if they are accessed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
ide is the last user of the blk_register_region framework except for the tracking of allocated gendisk. Switch to __register_blkdev, even if that doesn't allow us to trivially find out which command set to probe for. That means we now always request all modules when a user tries to access an unclaimed ide device node, but except for a few potentially loaded modules for a fringe use case of a deprecated and soon to be removed driver that doesn't make a difference. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use the simpler mechanism attached to major_name to allocate a md device when a currently unregistered minor is accessed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Acked-by: NSong Liu <song@kernel.org> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use the simpler mechanism attached to major_name to allocate a brd device when a currently unregistered minor is accessed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use the simpler mechanism attached to major_name to allocate a brd device when a currently unregistered minor is accessed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Switch from using blk_register_region to the probe callback passed to __register_blkdev to disable the request_module call for an unclaimed dev_t in the SD majors. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Acked-by: NMartin K. Petersen <martin.petersen@oracle.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
The swim driver (unlike various other floppy drivers) doesn't have magic device nodes for certain modes, and already registers a gendisk for each of the floppies supported by a device. Thus the region registered is a no-op and can be removed. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
There is no need to ever register the fake gendisk used for ide-tape. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Add a callback to the major_names array that allows a driver to override how to probe for dev_t that doesn't currently have a gendisk registered. This will help separating the lookup of the gendisk by dev_t vs probe action for a not currently registered dev_t. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Instead of reusing the ranges in bdev_map, add a new helper that is called if no ranges was found. This is a first step to unpeel and eventually remove the complex ranges structure. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Split the block_class_lock mutex into one each to protect bdev_map and major_names. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Copy and paste the kobj_map functionality in the block code in preparation for completely rewriting it. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Merge three hidden gendisk checks into one. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reviewed-by: NHannes Reinecke <hare@suse.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Just open code it in the few callers. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Fold set_device_ro into its only remaining caller. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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由 Christoph Hellwig 提交于
Use set_disk_ro instead of set_device_ro to match all other block drivers and to ensure all partitions mirror the read-only flag. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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