From: Christoph Hellwig Date: Wed, 28 Apr 2010 12:29:00 +0000 (+0000) Subject: xfs: clean up end index calculation in xfs_page_state_convert X-Git-Tag: v2.6.35-rc2~3^2^2~28 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=bd1556a146d46070049428dded306829cb65161d;p=platform%2Fkernel%2Flinux-3.10.git xfs: clean up end index calculation in xfs_page_state_convert Signed-off-by: Christoph Hellwig Signed-off-by: Alex Elder --- diff --git a/fs/xfs/linux-2.6/xfs_aops.c b/fs/xfs/linux-2.6/xfs_aops.c index 1d51bdd..089eaca 100644 --- a/fs/xfs/linux-2.6/xfs_aops.c +++ b/fs/xfs/linux-2.6/xfs_aops.c @@ -1065,7 +1065,7 @@ xfs_page_state_convert( unsigned long p_offset = 0; unsigned int type; __uint64_t end_offset; - pgoff_t end_index, last_index, tlast; + pgoff_t end_index, last_index; ssize_t size, len; int flags, err, imap_valid = 0, uptodate = 1; int page_dirty, count = 0; @@ -1260,15 +1260,22 @@ xfs_page_state_convert( xfs_start_page_writeback(page, 1, count); if (ioend && imap_valid) { - struct xfs_mount *m = XFS_I(inode)->i_mount; - xfs_off_t iomap_offset = XFS_FSB_TO_B(m, imap.br_startoff); - xfs_off_t iomap_bsize = XFS_FSB_TO_B(m, imap.br_blockcount); + xfs_off_t end_index; + + end_index = imap.br_startoff + imap.br_blockcount; + + /* to bytes */ + end_index <<= inode->i_blkbits; + + /* to pages */ + end_index = (end_index - 1) >> PAGE_CACHE_SHIFT; + + /* check against file size */ + if (end_index > last_index) + end_index = last_index; - offset = (iomap_offset + iomap_bsize - 1) >> - PAGE_CACHE_SHIFT; - tlast = min_t(pgoff_t, offset, last_index); xfs_cluster_write(inode, page->index + 1, &imap, &ioend, - wbc, startio, all_bh, tlast); + wbc, startio, all_bh, end_index); } if (iohead)