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block: introduce holder ops
Add a new blk_holder_ops structure, which is passed to blkdev_get_by_* and installed in the block_device for exclusive claims. It will be used to allow the block layer to call back into the user of the block device for thing like notification of a removed device or a device resize. 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/20230601094459.1350643-10-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
committed by
Jens Axboe
parent
00080f7fb7
commit
0718afd47f
@@ -243,7 +243,7 @@ bl_parse_simple(struct nfs_server *server, struct pnfs_block_dev *d,
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if (!dev)
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return -EIO;
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bdev = blkdev_get_by_dev(dev, FMODE_READ | FMODE_WRITE, NULL);
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bdev = blkdev_get_by_dev(dev, FMODE_READ | FMODE_WRITE, NULL, NULL);
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if (IS_ERR(bdev)) {
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printk(KERN_WARNING "pNFS: failed to open device %d:%d (%ld)\n",
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MAJOR(dev), MINOR(dev), PTR_ERR(bdev));
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@@ -312,7 +312,8 @@ bl_open_path(struct pnfs_block_volume *v, const char *prefix)
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if (!devname)
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return ERR_PTR(-ENOMEM);
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bdev = blkdev_get_by_path(devname, FMODE_READ | FMODE_WRITE, NULL);
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bdev = blkdev_get_by_path(devname, FMODE_READ | FMODE_WRITE, NULL,
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NULL);
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if (IS_ERR(bdev)) {
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pr_warn("pNFS: failed to open device %s (%ld)\n",
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devname, PTR_ERR(bdev));
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