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| author | Peng Tao <tao.peng@primarydata.com> | 2015-09-11 11:14:06 +0800 |
|---|---|---|
| committer | Trond Myklebust <trond.myklebust@primarydata.com> | 2015-09-17 15:48:23 -0400 |
| commit | 048883e0b934d9a5103d40e209cb14b7f33d2933 (patch) | |
| tree | f96c88dc05fceef2ff08fbe5470cc9a36310aa67 | |
| parent | a41cbe86df3afbc82311a1640e20858c0cd7e065 (diff) | |
| download | linux-stable-048883e0b934d9a5103d40e209cb14b7f33d2933.tar.gz linux-stable-048883e0b934d9a5103d40e209cb14b7f33d2933.tar.bz2 linux-stable-048883e0b934d9a5103d40e209cb14b7f33d2933.zip | |
nfs: fix pg_test page count calculation
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>
Fixes: 2e11f8296d22 ("nfs: cap request size to fit a kmalloced page array")
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
| -rw-r--r-- | fs/nfs/pagelist.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c index 7c5718ba625e..fe3ddd20ff89 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); |