Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs: net/9p: Handle get_user_pages_fast return properly
This commit is contained in:
commit
622b9f1524
2 changed files with 4 additions and 9 deletions
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@ -614,7 +614,7 @@ p9_client_rpc(struct p9_client *c, int8_t type, const char *fmt, ...)
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err = c->trans_mod->request(c, req);
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err = c->trans_mod->request(c, req);
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if (err < 0) {
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if (err < 0) {
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if (err != -ERESTARTSYS)
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if (err != -ERESTARTSYS && err != -EFAULT)
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c->status = Disconnected;
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c->status = Disconnected;
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goto reterr;
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goto reterr;
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}
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}
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@ -63,7 +63,7 @@ p9_payload_gup(struct p9_req_t *req, size_t *pdata_off, int *pdata_len,
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int nr_pages, u8 rw)
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int nr_pages, u8 rw)
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{
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{
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uint32_t first_page_bytes = 0;
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uint32_t first_page_bytes = 0;
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uint32_t pdata_mapped_pages;
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int32_t pdata_mapped_pages;
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struct trans_rpage_info *rpinfo;
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struct trans_rpage_info *rpinfo;
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*pdata_off = (__force size_t)req->tc->pubuf & (PAGE_SIZE-1);
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*pdata_off = (__force size_t)req->tc->pubuf & (PAGE_SIZE-1);
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@ -75,14 +75,9 @@ p9_payload_gup(struct p9_req_t *req, size_t *pdata_off, int *pdata_len,
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rpinfo = req->tc->private;
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rpinfo = req->tc->private;
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pdata_mapped_pages = get_user_pages_fast((unsigned long)req->tc->pubuf,
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pdata_mapped_pages = get_user_pages_fast((unsigned long)req->tc->pubuf,
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nr_pages, rw, &rpinfo->rp_data[0]);
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nr_pages, rw, &rpinfo->rp_data[0]);
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if (pdata_mapped_pages <= 0)
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return pdata_mapped_pages;
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if (pdata_mapped_pages < 0) {
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printk(KERN_ERR "get_user_pages_fast failed:%d udata:%p"
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"nr_pages:%d\n", pdata_mapped_pages,
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req->tc->pubuf, nr_pages);
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pdata_mapped_pages = 0;
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return -EIO;
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}
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rpinfo->rp_nr_pages = pdata_mapped_pages;
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rpinfo->rp_nr_pages = pdata_mapped_pages;
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if (*pdata_off) {
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if (*pdata_off) {
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*pdata_len = first_page_bytes;
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*pdata_len = first_page_bytes;
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