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[XFS] Check that a page has dirty buffers before finding it acceptable for

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rewrite clustering. This prevents writing excessive amounts of clean data
when doing random rewrites of a cached file.

SGI-PV: 951193
SGI-Modid: xfs-linux-melb:xfs-kern:25531a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>
This commit is contained in:
David Chinner
2006-03-22 12:47:40 +11:00
committed by Nathan Scott
parent 3758dee9f6
commit 2ddee844ee
1 changed files with 1 additions and 1 deletions
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2
fs/xfs/linux-2.6/xfs_aops.c
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@@ -647,7 +647,7 @@ xfs_is_delayed_page(
acceptable = (type == IOMAP_UNWRITTEN); acceptable = (type == IOMAP_UNWRITTEN);
else if (buffer_delay(bh)) else if (buffer_delay(bh))
acceptable = (type == IOMAP_DELAY); acceptable = (type == IOMAP_DELAY);
else if (buffer_mapped(bh)) else if (buffer_dirty(bh) && buffer_mapped(bh))
acceptable = (type == 0); acceptable = (type == 0);
else else
break; break;