From 948ecdb4c118293d2f3e267eec642c30c5d3a056 Mon Sep 17 00:00:00 2001 From: Nathan Scott Date: Thu, 28 Sep 2006 11:03:13 +1000 Subject: [PATCH] [XFS] Be more defensive with page flags (error/private) for metadata buffers. SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26801a Signed-off-by: Nathan Scott Signed-off-by: Tim Shimmin --- fs/xfs/linux-2.6/xfs_buf.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/fs/xfs/linux-2.6/xfs_buf.c b/fs/xfs/linux-2.6/xfs_buf.c index 58b6599de619..9bbadafdcb00 100644 --- a/fs/xfs/linux-2.6/xfs_buf.c +++ b/fs/xfs/linux-2.6/xfs_buf.c @@ -318,8 +318,12 @@ xfs_buf_free( if ((bp->b_flags & XBF_MAPPED) && (bp->b_page_count > 1)) free_address(bp->b_addr - bp->b_offset); - for (i = 0; i < bp->b_page_count; i++) - page_cache_release(bp->b_pages[i]); + for (i = 0; i < bp->b_page_count; i++) { + struct page *page = bp->b_pages[i]; + + ASSERT(!PagePrivate(page)); + page_cache_release(page); + } _xfs_buf_free_pages(bp); } else if (bp->b_flags & _XBF_KMEM_ALLOC) { /* @@ -400,6 +404,7 @@ _xfs_buf_lookup_pages( nbytes = min_t(size_t, size, PAGE_CACHE_SIZE - offset); size -= nbytes; + ASSERT(!PagePrivate(page)); if (!PageUptodate(page)) { page_count--; if (blocksize >= PAGE_CACHE_SIZE) { @@ -1117,10 +1122,10 @@ xfs_buf_bio_end_io( do { struct page *page = bvec->bv_page; + ASSERT(!PagePrivate(page)); if (unlikely(bp->b_error)) { if (bp->b_flags & XBF_READ) ClearPageUptodate(page); - SetPageError(page); } else if (blocksize >= PAGE_CACHE_SIZE) { SetPageUptodate(page); } else if (!PagePrivate(page) && -- GitLab