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Re: [PATCH RFC v2 for-6.8/block 01/18] block: add some bdev apis
- To: Christoph Hellwig <hch@xxxxxxxxxxxxx>, Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>
- From: Yu Kuai <yukuai1@xxxxxxxxxxxxxxx>
- Date: Wed, 13 Dec 2023 09:09:13 +0800
- Cc: axboe@xxxxxxxxx, roger.pau@xxxxxxxxxx, colyli@xxxxxxx, kent.overstreet@xxxxxxxxx, joern@xxxxxxxxxxxxxxx, miquel.raynal@xxxxxxxxxxx, richard@xxxxxx, vigneshr@xxxxxx, sth@xxxxxxxxxxxxx, hoeppner@xxxxxxxxxxxxx, hca@xxxxxxxxxxxxx, gor@xxxxxxxxxxxxx, agordeev@xxxxxxxxxxxxx, jejb@xxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, clm@xxxxxx, josef@xxxxxxxxxxxxxx, dsterba@xxxxxxxx, viro@xxxxxxxxxxxxxxxxxx, brauner@xxxxxxxxxx, nico@xxxxxxxxxxx, xiang@xxxxxxxxxx, chao@xxxxxxxxxx, tytso@xxxxxxx, adilger.kernel@xxxxxxxxx, agruenba@xxxxxxxxxx, jack@xxxxxxxx, konishi.ryusuke@xxxxxxxxx, willy@xxxxxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, p.raghav@xxxxxxxxxxx, hare@xxxxxxx, linux-block@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-bcache@xxxxxxxxxxxxxxx, linux-mtd@xxxxxxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-bcachefs@xxxxxxxxxxxxxxx, linux-btrfs@xxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, linux-erofs@xxxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, gfs2@xxxxxxxxxxxxxxx, linux-nilfs@xxxxxxxxxxxxxxx, yi.zhang@xxxxxxxxxx, yangerkun@xxxxxxxxxx, "yukuai (C)" <yukuai3@xxxxxxxxxx>
- Delivery-date: Wed, 13 Dec 2023 01:09:47 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
Hi,
在 2023/12/12 21:16, Christoph Hellwig 写道:
+void invalidate_bdev_range(struct block_device *bdev, pgoff_t start,
+ pgoff_t end)
+{
+ invalidate_mapping_pages(bdev->bd_inode->i_mapping, start, end);
+}
+EXPORT_SYMBOL_GPL(invalidate_bdev_range);
Can we have kerneldoc comments for the new helpers please?
Of course, will definitely do this in v3.
+struct folio *__bdev_get_folio(struct block_device *bdev, loff_t pos,
+ fgf_t fgp_flags, gfp_t gfp)
+{
+ return __filemap_get_folio(bdev->bd_inode->i_mapping, pos >> PAGE_SHIFT,
+ fgp_flags, gfp);
+}
+EXPORT_SYMBOL_GPL(__bdev_get_folio);
It's a bit silly to have a __-prefixed API without a version that
doesn't have the prefix, so I'd prefer to drop it. Unless willy has
a good argument for keeping it the same as the filemap API.
Ok, I'll drop it if willy doesn't against this.
Thanks,
Kuai
.
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