| Message ID | 1441941246-52981-1-git-send-email-tao.peng@primarydata.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 7c5718b..fe3ddd2 100644 --- a/fs/nfs/pagelist.c +++ b/fs/nfs/pagelist.c @@ -508,7 +508,7 @@ size_t nfs_generic_pg_test(struct nfs_pageio_descriptor *desc, * for it without upsetting the slab allocator. */ if (((mirror->pg_count + req->wb_bytes) >> PAGE_SHIFT) * - sizeof(struct page) > PAGE_SIZE) + sizeof(struct page *) > PAGE_SIZE) return 0; return min(mirror->pg_bsize - mirror->pg_count, (size_t)req->wb_bytes);
We really want sizeof(struct page *) instead. Otherwise we limit maximum IO size to 64 pages rather than 512 pages on a 64bit system. Fixes 2e11f829(nfs: cap request size to fit a kmalloced page array). Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Peng Tao <tao.peng@primarydata.com> --- fs/nfs/pagelist.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)