3.16.60-rc1 review patch. If anyone has any objections, please let me know.
------------------ From: Jeff Moyer <[email protected]> commit 3172485f4f8032649c144e4aafa550e1e6179332 upstream. Prior to commit d47992f86b30 ("mm: change invalidatepage prototype to accept length"), an offset of 0 meant that the full page was being invalidated. After that commit, we need to instead check the length. Jan said: : : The only possible issue is that try_to_release_page() was called more : often than necessary. Otherwise the issue is harmless but still it's good : to have this fixed. Link: http://lkml.kernel.org/r/[email protected] Fixes: d47992f86b307 ("mm: change invalidatepage prototype to accept length") Signed-off-by: Jeff Moyer <[email protected]> Reviewed-by: Jan Kara <[email protected]> Cc: Lukas Czerner <[email protected]> Cc: Hugh Dickins <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]> Signed-off-by: Ben Hutchings <[email protected]> --- fs/buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1575,7 +1575,7 @@ void block_invalidatepage(struct page *p * The get_block cached value has been unconditionally invalidated, * so real IO is not possible anymore. */ - if (offset == 0) + if (length == PAGE_SIZE) try_to_release_page(page, 0); out: return;
