Messages in this thread Patch in this message | | | From | Zhen Lei <> | Subject | [PATCH 1/1] ocfs2: eliminate a misreported warning | Date | Wed, 25 Apr 2018 19:29:59 +0800 |
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Below warning can not be happened, because the parameter chunksize passed from ocfs2_info_freefrag_scan_chain-->ocfs2_info_update_ffg is guaranteed to be positive. So __ilog2_u32 is impossible return -1.
fs/ocfs2/ioctl.c: In function 'ocfs2_info_update_ffg': fs/ocfs2/ioctl.c:411:17: warning: array subscript is below array bounds [-Warray-bounds] hist->fc_chunks[index]++; ^ fs/ocfs2/ioctl.c:411:17: warning: array subscript is below array bounds [-Warray-bounds]
Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> --- fs/ocfs2/ioctl.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c index ab30c005..994726a 100644 --- a/fs/ocfs2/ioctl.c +++ b/fs/ocfs2/ioctl.c @@ -402,7 +402,7 @@ static int ocfs2_info_handle_freeinode(struct inode *inode, static void o2ffg_update_histogram(struct ocfs2_info_free_chunk_list *hist, unsigned int chunksize) { - int index; + u32 index;
index = __ilog2_u32(chunksize); if (index >= OCFS2_INFO_MAX_HIST) -- 1.8.3
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