From f82b376413298ddd39a2391e38260c15cdebf380 Mon Sep 17 00:00:00 2001
From: Matthew Wilcox <mawilcox@microsoft.com>
Date: Tue, 10 Apr 2018 16:36:44 -0700
Subject: [PATCH] export __set_page_dirty
XFS currently contains a copy-and-paste of __set_page_dirty(). Export
it from buffer.c instead.
Link: http://lkml.kernel.org/r/20180313132639.17387-6-willy@infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Acked-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Cc: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
Cc: Dave Chinner <david@fromorbit.com>
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>
---
fs/buffer.c | 3 ++-
fs/xfs/xfs_aops.c | 15 ++-------------
include/linux/mm.h | 1 +
3 files changed, 5 insertions(+), 14 deletions(-)
diff --git a/fs/buffer.c b/fs/buffer.c
index ec5dd39071e6a..64b1e2065b6b1 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -594,7 +594,7 @@ EXPORT_SYMBOL(mark_buffer_dirty_inode);
*
* The caller must hold lock_page_memcg().
*/
-static void __set_page_dirty(struct page *page, struct address_space *mapping,
+void __set_page_dirty(struct page *page, struct address_space *mapping,
int warn)
{
unsigned long flags;
@@ -608,6 +608,7 @@ static void __set_page_dirty(struct page *page, struct address_space *mapping,
}
spin_unlock_irqrestore(&mapping->tree_lock, flags);
}
+EXPORT_SYMBOL_GPL(__set_page_dirty);
/*
* Add a page to the dirty page list.
diff --git a/fs/xfs/xfs_aops.c b/fs/xfs/xfs_aops.c
index 436a1de3fcdf4..0ab824f574ed1 100644
--- a/fs/xfs/xfs_aops.c
+++ b/fs/xfs/xfs_aops.c
@@ -1467,19 +1467,8 @@ xfs_vm_set_page_dirty(
newly_dirty = !TestSetPageDirty(page);
spin_unlock(&mapping->private_lock);
- if (newly_dirty) {
- /* sigh - __set_page_dirty() is static, so copy it here, too */
- unsigned long flags;
-
- spin_lock_irqsave(&mapping->tree_lock, flags);
- if (page->mapping) { /* Race with truncate? */
- WARN_ON_ONCE(!PageUptodate(page));
- account_page_dirtied(page, mapping);
- radix_tree_tag_set(&mapping->page_tree,
- page_index(page), PAGECACHE_TAG_DIRTY);
- }
- spin_unlock_irqrestore(&mapping->tree_lock, flags);
- }
+ if (newly_dirty)
+ __set_page_dirty(page, mapping, 1);
unlock_page_memcg(page);
if (newly_dirty)
__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 342c441c25d09..f13bc25f7a9f6 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1466,6 +1466,7 @@ extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
extern void do_invalidatepage(struct page *page, unsigned int offset,
unsigned int length);
+void __set_page_dirty(struct page *, struct address_space *, int warn);
int __set_page_dirty_nobuffers(struct page *page);
int __set_page_dirty_no_writeback(struct page *page);
int redirty_page_for_writepage(struct writeback_control *wbc,
--
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