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[PATCH] invalidate: remove_mapping() fix

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If remove_mapping() failed to remove the page from its mapping, don't go and
mark it not uptodate!  Makes kernel go dead.

(Actually, I don't think the ClearPageUptodate is needed there at all).

Says Nick Piggin:

   "Right, it isn't needed because at this point the page is guaranteed
    by remove_mapping to have no references (except us) and cannot pick
    up any new ones because it is removed from pagecache.

    We can delete it."

Signed-off-by: Andrew Morton <[email protected]>
Acked-by: Nick Piggin <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrew Morton 2006-10-17 00:09:36 -07:00 • committed by Linus Torvalds
commit a649fd9271
2 changed files with 6 additions and 1 deletions
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1
mm/truncate.c
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@ -96,7 +96,6 @@ invalidate_complete_page(struct address_space *mapping, struct page *page)
return 0;
ret = remove_mapping(mapping, page);
ClearPageUptodate(page);
return ret;
}