diff options
| -rw-r--r-- | fs/nfs/nfs4proc.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 294d27be3868..22175b85b586 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5601,10 +5601,9 @@ out: */ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t buflen) { - struct page *pages[NFS4ACL_MAXPAGES + 1] = {NULL, }; + struct page **pages; struct nfs_getaclargs args = { .fh = NFS_FH(inode), - .acl_pages = pages, .acl_len = buflen, }; struct nfs_getaclres res = { @@ -5615,11 +5614,19 @@ static ssize_t __nfs4_get_acl_uncached(struct inode *inode, void *buf, size_t bu .rpc_argp = &args, .rpc_resp = &res, }; - unsigned int npages = DIV_ROUND_UP(buflen, PAGE_SIZE) + 1; + unsigned int npages; int ret = -ENOMEM, i; + struct nfs_server *server = NFS_SERVER(inode); - if (npages > ARRAY_SIZE(pages)) - return -ERANGE; + if (buflen == 0) + buflen = server->rsize; + + npages = DIV_ROUND_UP(buflen, PAGE_SIZE) + 1; + pages = kmalloc_array(npages, sizeof(struct page *), GFP_NOFS); + if (!pages) + return -ENOMEM; + + args.acl_pages = pages; for (i = 0; i < npages; i++) { pages[i] = alloc_page(GFP_KERNEL); @@ -5665,6 +5672,7 @@ out_free: __free_page(pages[i]); if (res.acl_scratch) __free_page(res.acl_scratch); + kfree(pages); return ret; } |