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authorMatthew Wilcox <mawilcox@microsoft.com>2018-03-06 11:23:16 -0800
committerDavid Sterba <dsterba@suse.com>2018-03-31 01:26:45 +0200
commit965aab1cfc13dacc3d5ad0d8d8eb4e0a7ea8c1d1 (patch)
treee537073b08d947fba241a8442082c33beb3e772e /fs/btrfs/btrfs_inode.h
parent4759700a71ab109c67376360e9f00e2fed6b3807 (diff)
btrfs: Use filemap_range_has_page()
The current implementation of btrfs_page_exists_in_range() gives the wrong answer if the workingset code has stored a shadow entry in the page cache. The filemap_range_has_page() function does not have this problem, and it's shared code, so use it instead. eigned-off-by: Matthew Wilcox <mawilcox@microsoft.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/btrfs_inode.h')
-rw-r--r--fs/btrfs/btrfs_inode.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/btrfs/btrfs_inode.h b/fs/btrfs/btrfs_inode.h
index f527e99c9f8d..078a53e01ece 100644
--- a/fs/btrfs/btrfs_inode.h
+++ b/fs/btrfs/btrfs_inode.h
@@ -364,6 +364,10 @@ static inline void btrfs_print_data_csum_error(struct btrfs_inode *inode,
logical_start, csum, csum_expected, mirror_num);
}
-bool btrfs_page_exists_in_range(struct inode *inode, loff_t start, loff_t end);
+static inline bool btrfs_page_exists_in_range(struct inode *inode,
+ loff_t start, loff_t end)
+{
+ return filemap_range_has_page(inode->i_mapping, start, end);
+}
#endif