cifs: use a flexarray in cifs_writedata
The cifs_writedata code uses a single element trailing array, which just adds unneeded complexity. Use a flexarray instead. Signed-off-by: Jeff Layton <jlayton@redhat.com> Reviewed-by: Pavel Shilovsky <piastry@etersoft.ru> Signed-off-by: Steve French <smfrench@gmail.com>
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@ -1068,7 +1068,7 @@ struct cifs_writedata {
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unsigned int pagesz;
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unsigned int tailsz;
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unsigned int nr_pages;
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struct page *pages[1];
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struct page *pages[];
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};
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/*
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@ -1962,15 +1962,9 @@ cifs_writedata_alloc(unsigned int nr_pages, work_func_t complete)
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{
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struct cifs_writedata *wdata;
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/* this would overflow */
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if (nr_pages == 0) {
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cifs_dbg(VFS, "%s: called with nr_pages == 0!\n", __func__);
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return NULL;
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}
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/* writedata + number of page pointers */
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wdata = kzalloc(sizeof(*wdata) +
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sizeof(struct page *) * (nr_pages - 1), GFP_NOFS);
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sizeof(struct page *) * nr_pages, GFP_NOFS);
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if (wdata != NULL) {
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kref_init(&wdata->refcount);
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INIT_LIST_HEAD(&wdata->list);
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