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| H A D | extent_io.c | diff fdf250db Tue Aug 17 03:38:49 MDT 2021 Qu Wenruo <wqu@suse.com> btrfs: subpage: only call btrfs_alloc_subpage() when sectorsize is smaller than PAGE_SIZE There are two call sites of btrfs_alloc_subpage(): - btrfs_attach_subpage() We have ensured sectorsize is smaller than PAGE_SIZE - alloc_extent_buffer() We call btrfs_alloc_subpage() unconditionally. The alloc_extent_buffer() forces us to check the sectorsize size against page size inside btrfs_alloc_subpage(). Since the function name, btrfs_alloc_subpage(), already indicates it should only get called for subpage cases, do the check in alloc_extent_buffer() and add an ASSERT() in btrfs_alloc_subpage(). Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
| H A D | subpage.c | diff fdf250db Tue Aug 17 03:38:49 MDT 2021 Qu Wenruo <wqu@suse.com> btrfs: subpage: only call btrfs_alloc_subpage() when sectorsize is smaller than PAGE_SIZE There are two call sites of btrfs_alloc_subpage(): - btrfs_attach_subpage() We have ensured sectorsize is smaller than PAGE_SIZE - alloc_extent_buffer() We call btrfs_alloc_subpage() unconditionally. The alloc_extent_buffer() forces us to check the sectorsize size against page size inside btrfs_alloc_subpage(). Since the function name, btrfs_alloc_subpage(), already indicates it should only get called for subpage cases, do the check in alloc_extent_buffer() and add an ASSERT() in btrfs_alloc_subpage(). Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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