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Date: Tue, 25 Sep 2007 23:09:43 -0400 From: Erez Zadok <ezk@...sunysb.edu> To: akpm@...ux-foundation.org Cc: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, viro@....linux.org.uk, hch@...radead.org, Olivier Blin <blino@...driva.com>, Erez Zadok <ezk@...sunysb.edu> Subject: [PATCH 04/25] Unionfs: cache-coherency fixes From: Olivier Blin <blino@...driva.com> Do not update mtime if there is no upper branch for the inode. This prevents from calling unionfs_lower_inode_idx() with a negative index, which triggers a bug. Signed-off-by: Olivier Blin <blino@...driva.com> Signed-off-by: Erez Zadok <ezk@...sunysb.edu> --- fs/unionfs/fanout.h | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/unionfs/fanout.h b/fs/unionfs/fanout.h index afeb9f6..51aa0de 100644 --- a/fs/unionfs/fanout.h +++ b/fs/unionfs/fanout.h @@ -308,7 +308,7 @@ static inline void unionfs_copy_attr_times(struct inode *upper) int bindex; struct inode *lower; - if (!upper) + if (!upper || ibstart(upper) < 0) return; for (bindex=ibstart(upper); bindex <= ibend(upper); bindex++) { lower = unionfs_lower_inode_idx(upper, bindex); -- 1.5.2.2 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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