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authorQu Wenruo2022-01-13 13:22:10 +0800
committerDavid Sterba2022-05-16 17:03:11 +0200
commit1a42daab11d39f567bb2c6b2b7e551e73abb3512 (patch)
tree209f9ef0c2d1df111aac7784e117007207e33ec9 /fs/btrfs/ioctl.c
parentfbca46eb46ecc4443137e58cf9802a888c9ca136 (diff)
btrfs: expand subpage support to any PAGE_SIZE > 4K
With the recent change in metadata handling, we can handle metadata in the following cases: - nodesize < PAGE_SIZE and sectorsize < PAGE_SIZE Go subpage routine for both metadata and data. - nodesize < PAGE_SIZE and sectorsize >= PAGE_SIZE Invalid case for now. As we require nodesize >= sectorsize. - nodesize >= PAGE_SIZE and sectorsize < PAGE_SIZE Go subpage routine for data, but regular page routine for metadata. - nodesize >= PAGE_SIZE and sectorsize >= PAGE_SIZE Go regular page routine for both metadata and data. Now we can handle any sectorsize < PAGE_SIZE, plus the existing sectorsize == PAGE_SIZE support. But here we introduce an artificial limit, any PAGE_SIZE > 4K case, we will only support 4K and PAGE_SIZE as sector size. The idea here is to reduce the test combinations, and push 4K as the default standard in the future. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/ioctl.c')
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