- 14 Jun, 2023 1 commit
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David Howells authored
Fix dio_bio_cleanup() to advance the head index into the list of pages past the pages it has released, as __blockdev_direct_IO() will call it twice if do_direct_IO() fails. The issue was causing: WARNING: CPU: 6 PID: 2220 at mm/gup.c:76 try_get_folio This can be triggered by setting up a clean pair of UDF filesystems on loopback devices and running the generic/451 xfstest with them as the scratch and test partitions. Something like the following: fallocate /mnt2/udf_scratch -l 1G fallocate /mnt2/udf_test -l 1G mknod /dev/lo0 b 7 0 mknod /dev/lo1 b 7 1 losetup lo0 /mnt2/udf_scratch losetup lo1 /mnt2/udf_test mkfs -t udf /dev/lo0 mkfs -t udf /dev/lo1 cd xfstests ./check generic/451 with xfstests configured by putting the following into local.config: export FSTYP=udf export DISABLE_UDF_TEST=1 export TEST_DEV=/dev/lo1 export TEST_DIR=/xfstest.test export SCRATCH_DEV=/dev/lo0 export SCRATCH_MNT=/xfstest.scratch Fixes: 1ccf164e ("block: Use iov_iter_extract_pages() and page pinning in direct-io.c") Reported-by:kernel test robot <oliver.sang@intel.com> Closes: https://lore.kernel.org/oe-lkp/202306120931.a9606b88-oliver.sang@intel.comSigned-off-by:
David Howells <dhowells@redhat.com> cc: Christoph Hellwig <hch@infradead.org> cc: David Hildenbrand <david@redhat.com> cc: Andrew Morton <akpm@linux-foundation.org> cc: Jens Axboe <axboe@kernel.dk> cc: Al Viro <viro@zeniv.linux.org.uk> cc: Matthew Wilcox <willy@infradead.org> cc: Jan Kara <jack@suse.cz> cc: Jeff Layton <jlayton@kernel.org> cc: Jason Gunthorpe <jgg@nvidia.com> cc: Logan Gunthorpe <logang@deltatee.com> cc: Hillf Danton <hdanton@sina.com> cc: Christian Brauner <brauner@kernel.org> cc: Linus Torvalds <torvalds@linux-foundation.org> cc: linux-fsdevel@vger.kernel.org cc: linux-block@vger.kernel.org cc: linux-kernel@vger.kernel.org cc: linux-mm@kvack.org Reviewed-by:
David Hildenbrand <david@redhat.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/1193485.1686693279@warthog.procyon.org.ukSigned-off-by:
Jens Axboe <axboe@kernel.dk>
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- 13 Jun, 2023 1 commit
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Christoph Hellwig authored
Add back the accidentally dropped mode parameter. Fixes: b60f7635788a ("swim3: fix the floppy_locked_ioctl prototype") Reported-by:Randy Dunlap <rdunlap@infradead.org> Signed-off-by:
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- 12 Jun, 2023 38 commits
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Yu Kuai authored
In __blk_mq_tag_busy/idle(), updating 'active_queues' and calculating 'wake_batch' is not atomic: t1: t2: _blk_mq_tag_busy blk_mq_tag_busy inc active_queues // assume 1->2 inc active_queues // 2 -> 3 blk_mq_update_wake_batch // calculate based on 3 blk_mq_update_wake_batch /* calculate based on 2, while active_queues is actually 3. */ Fix this problem by protecting them wih 'tags->lock', this is not a hot path, so performance should not be concerned. And now that all writers are inside the lock, switch 'actives_queues' from atomic to unsigned int. Fixes: 180dccb0 ("blk-mq: fix tag_get wait task can't be awakened") Signed-off-by:
Yu Kuai <yukuai3@huawei.com> Reviewed-by:
Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/r/20230610023043.2559121-1-yukuai1@huaweicloud.comSigned-off-by:
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Christoph Hellwig authored
FMODE_NDELAY, FMODE_EXCL and FMODE_WRITE_IOCTL were only used for block internal purposed and are now entirely unused, so remove them. Signed-off-by:
Hannes Reinecke <hare@suse.de> Reviewed-by:
Christian Brauner <brauner@kernel.org> Link: https://lore.kernel.org/r/20230608110258.189493-31-hch@lst.deSigned-off-by:
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Christoph Hellwig authored
Store the file struct used as the holder in file->private_data as an indicator that this file descriptor was opened exclusively to remove the last use of FMODE_EXCL. Signed-off-by:
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Christoph Hellwig authored
Always use I_BDEV(file->f_mapping->host) to find the bdev for a file to free up file->private_data for other uses. Signed-off-by:
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Christoph Hellwig authored
The only overlap between the block open flags mapped into the fmode_t and other uses of fmode_t are FMODE_READ and FMODE_WRITE. Define a new blk_mode_t instead for use in blkdev_get_by_{dev,path}, ->open and ->ioctl and stop abusing fmode_t. Signed-off-by: -
Christoph Hellwig authored
A few ioctl handlers have fmode_t arguments that are entirely unused, remove them. Signed-off-by:
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Christoph Hellwig authored
All these helpers are only used in core block code, so move them out of the public header. Signed-off-by:
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Christoph Hellwig authored
This code has been dead forever, make sure it doesn't show up in code searches. Signed-off-by:
Richard Weinberger <richard@nod.at> Link: https://lore.kernel.org/r/20230608110258.189493-25-hch@lst.deSigned-off-by:
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Christoph Hellwig authored
Stop passing the fmode_t around and just use a simple bool to track if an export is read-only. Signed-off-by:
Jack Wang <jinpu.wang@ionos.com> Link: https://lore.kernel.org/r/20230608110258.189493-24-hch@lst.deSigned-off-by:
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Christoph Hellwig authored
Instead of propagating the fmode_t, just use a bool to track if a mtd block device was opened for writing. Signed-off-by:
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Christoph Hellwig authored
Instead of passing a fmode_t and only checking it fo0r FMODE_WRITE, pass a bool open_for_write to prepare for callers that won't have the fmode_t. Signed-off-by:
Keith Busch <kbusch@kernel.org> Link: https://lore.kernel.org/r/20230608110258.189493-22-hch@lst.deSigned-off-by:
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Christoph Hellwig authored
Instead of passing a fmode_t and only checking it for FMODE_WRITE, pass a bool open_for_write to prepare for callers that won't have the fmode_t. Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by:
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Christoph Hellwig authored
Instead of passing a fmode_t and only checking it for FMODE_WRITE, pass a bool open_for_write to prepare for callers that won't have the fmode_t. Signed-off-by:
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Christoph Hellwig authored
Instead of passing a fmode_t and only checking it for FMODE_WRITE, pass a bool open_for_write to prepare for callers that won't have the fmode_t. Signed-off-by:
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Christoph Hellwig authored
There is no real need to store the open mode in the super_block now. It is only used by f2fs, which can easily recalculate it. Signed-off-by:
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Christoph Hellwig authored
Add a helper to return the open flags for blkdev_get_by* for passed in super block flags instead of open coding the logic in many places. Signed-off-by:
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Christoph Hellwig authored
The current interface for exclusive opens is rather confusing as it requires both the FMODE_EXCL flag and a holder. Remove the need to pass FMODE_EXCL and just key off the exclusive open off a non-NULL holder. For blkdev_put this requires adding the holder argument, which provides better debug checking that only the holder actually releases the hold, but at the same time allows removing the now superfluous mode argument. Signed-off-by:
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Christoph Hellwig authored
Passing a holder to blkdev_get_by_path when FMODE_EXCL isn't set doesn't make sense, so pass NULL instead and remove the holder argument from the call chains the only end up in non-FMODE_EXCL blkdev_get_by_path calls. Exclusive mode for device scanning is not used since commit 50d281fc ("btrfs: scan device in non-exclusive mode")". Signed-off-by:
David Sterba <dsterba@suse.com> Link: https://lore.kernel.org/r/20230608110258.189493-15-hch@lst.deSigned-off-by:
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Christoph Hellwig authored
Passing a holder to blkdev_get_by_path when FMODE_EXCL isn't set doesn't make sense, so pass NULL instead. Signed-off-by:
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Christoph Hellwig authored
sb is just an on-stack pointer that can easily be reused by other calls. Switch to use the bcache-wide bcache_kobj instead as there is no need to claim per-bcache device anyway. Signed-off-by:
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Christoph Hellwig authored
holder is just an on-stack pointer that can easily be reused by other calls, replace it with a static variable that doesn't change. Signed-off-by:
Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20230608110258.189493-12-hch@lst.deSigned-off-by:
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Christoph Hellwig authored
Make the function name match the method name. Signed-off-by:
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Christoph Hellwig authored
The mode argument to the ->release block_device_operation is never used, so remove it. Signed-off-by:
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Christoph Hellwig authored
->open is only called on the whole device. Make that explicit by passing a gendisk instead of the block_device. Signed-off-by:
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Christoph Hellwig authored
bdev_check_media_change should only ever be called for the whole device. Pass a gendisk to make that explicit and rename the function to disk_check_media_change. Signed-off-by:
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Christoph Hellwig authored
Signed-off-by:
Phillip Potter <phil@philpotter.co.uk> Reviewed-by:
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Christoph Hellwig authored
Set a flag when a cdrom_device_info is opened for writing, instead of trying to figure out this at release time. This will allow to eventually remove the mode argument to the ->release block_device_operation as nothing but the CDROM drivers uses that argument. Signed-off-by:
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Christoph Hellwig authored
cdrom_close_write is empty, and the for_data flag it is keyed off is never set. Remove all this clutter. Signed-off-by:
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Christoph Hellwig authored
Signed-off-by:
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Christoph Hellwig authored
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Christoph Hellwig authored
For whole devices ->open is called for each open, but for partitions it is only called on the first open of a partition, e.g.: open("/dev/vdb", ...) open("/dev/vdb", ...) - 2 call to ->open open("/dev/vdb1", ...) open("/dev/vdb", ...) - 2 call to ->open open("/dev/vdb", ...) open("/dev/vdb", ...) - just open call to ->open This is problematic as various block drivers look at open flags and might not do all the required setup if the earlier open was with an odd flag like O_NDELAY or the magic 3 ioctl-only open mode. Signed-off-by: -
Guoqing Jiang authored
Change the return type to void given it always returns 0. Acked-by:
Guoqing Jiang <guoqing.jiang@linux.dev> Link: https://lore.kernel.org/r/20230524070026.2932-9-guoqing.jiang@linux.devSigned-off-by:
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Guoqing Jiang authored
With this, we can remove several lines of code. Acked-by:
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Guoqing Jiang authored
Let's always set errno after pr_err which is consistent with default case. Acked-by:
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Guoqing Jiang authored
It actually represents the name of rnbd_srv_dev. Acked-by:
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Guoqing Jiang authored
Check ret is enough since if sess_dev is NULL which also implies ret should be 0. Acked-by:
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Guoqing Jiang authored
Add one new array (marked with __maybe_unused to prevent gcc warning about "defined but not used" with W=1), then we can remove rnbd_access_mode_str and rnbd-common.c accordingly. Signed-off-by:
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Guoqing Jiang authored
No need to include it since none of macros in limits.h are used by rnbd-srv. Acked-by:
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