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page cache: use xa_lock

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Remove the address_space ->tree_lock and use the xa_lock newly added to
the radix_tree_root.  Rename the address_space ->page_tree to ->i_pages,
since we don't really care that it's a tree.

[willy@infradead.org: fix nds32, fs/dax.c]
  Link: http://lkml.kernel.org/r/20180406145415.GB20605@bombadil.infradead.orgLink: http://lkml.kernel.org/r/20180313132639.17387-9-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Dave Chinner <david@fromorbit.com>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Matthew Wilcox 2018-04-10 16:36:56 -07:00 • committed by Linus Torvalds
parent f6bb2a2c0b
commit b93b016313
39 changed files with 345 additions and 366 deletions
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2
fs/btrfs/compression.c
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@ -458,7 +458,7 @@ static noinline int add_ra_bio_pages(struct inode *inode,
break;
rcu_read_lock();
page = radix_tree_lookup(&mapping->page_tree, pg_index);
page = radix_tree_lookup(&mapping->i_pages, pg_index);
rcu_read_unlock();
if (page && !radix_tree_exceptional_entry(page)) {
misses++;