| Date | Mon, 26 Mar 2018 15:36:48 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v9 00/61] XArray v9 |
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On Tue, 13 Mar 2018 06:25:38 -0700 Matthew Wilcox <willy@infradead.org> wrote:
> This patchset is, I believe, appropriate for merging for 4.17. > It contains the XArray implementation, to eventually replace the radix > tree, and converts the page cache to use it.
I looked at this from a for-4.17 POV and ran out of nerve at "[PATCH v9 09/61] xarray: Replace exceptional entries". It's awfully late.
"[PATCH v9 08/61] page cache: Use xa_lock" looks sufficiently mechanical to be if-it-compiles-it-works, although perhaps that shouldn't be in 4.17 either. Mainly because it commits us to merging the rest of XArray and there hasn't been a ton of review and test activity.
It looks like btrfs has changed in -next:
--- a/fs/btrfs/inode.c~page-cache-use-xa_lock-fix +++ a/fs/btrfs/inode.c @@ -7445,7 +7445,7 @@ out: bool btrfs_page_exists_in_range(struct inode *inode, loff_t start, loff_t end) { - struct radix_tree_root *root = &inode->i_mapping->page_tree; + struct radix_tree_root *root = &inode->i_mapping->i_pages; bool found = false; void **pagep = NULL; struct page *page = NULL; _
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