macvtap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS

[~andy/linux] / fs / nfs / pnfs.c

diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index c5bd758e563768d76b2a43c830dcba8b53e175cf..3a3a79d6bf15c4fa4dfabdf10802a0ee4be9c5aa 100644 (file)
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -360,7 +360,7 @@ pnfs_put_lseg(struct pnfs_layout_segment *lseg)
 }
 EXPORT_SYMBOL_GPL(pnfs_put_lseg);
 
-static inline u64
+static u64
 end_offset(u64 start, u64 len)
 {
        u64 end;
@@ -376,9 +376,9 @@ end_offset(u64 start, u64 len)
  *           start2           end2
  *           [----------------)
  */
-static inline int
-lo_seg_contained(struct pnfs_layout_range *l1,
-                struct pnfs_layout_range *l2)
+static bool
+pnfs_lseg_range_contained(const struct pnfs_layout_range *l1,
+                const struct pnfs_layout_range *l2)
 {
        u64 start1 = l1->offset;
        u64 end1 = end_offset(start1, l1->length);
@@ -395,9 +395,9 @@ lo_seg_contained(struct pnfs_layout_range *l1,
  *                              start2           end2
  *                              [----------------)
  */
-static inline int
-lo_seg_intersecting(struct pnfs_layout_range *l1,
-                   struct pnfs_layout_range *l2)
+static bool
+pnfs_lseg_range_intersecting(const struct pnfs_layout_range *l1,
+                   const struct pnfs_layout_range *l2)
 {
        u64 start1 = l1->offset;
        u64 end1 = end_offset(start1, l1->length);
@@ -409,12 +409,12 @@ lo_seg_intersecting(struct pnfs_layout_range *l1,
 }
 
 static bool
-should_free_lseg(struct pnfs_layout_range *lseg_range,
-                struct pnfs_layout_range *recall_range)
+should_free_lseg(const struct pnfs_layout_range *lseg_range,
+                const struct pnfs_layout_range *recall_range)
 {
        return (recall_range->iomode == IOMODE_ANY ||
                lseg_range->iomode == recall_range->iomode) &&
-              lo_seg_intersecting(lseg_range, recall_range);
+              pnfs_lseg_range_intersecting(lseg_range, recall_range);
 }
 
 static bool pnfs_lseg_dec_and_remove_zero(struct pnfs_layout_segment *lseg,
@@ -766,6 +766,7 @@ send_layoutget(struct pnfs_layout_hdr *lo,
        lgp->args.inode = ino;
        lgp->args.ctx = get_nfs_open_context(ctx);
        lgp->gfp_flags = gfp_flags;
+       lgp->cred = lo->plh_lc_cred;
 
        /* Synchronously retrieve layout information from server and
         * store in lseg.
@@ -860,6 +861,7 @@ _pnfs_return_layout(struct inode *ino)
        lrp->args.inode = ino;
        lrp->args.layout = lo;
        lrp->clp = NFS_SERVER(ino)->nfs_client;
+       lrp->cred = lo->plh_lc_cred;
 
        status = nfs4_proc_layoutreturn(lrp);
 out:
@@ -984,8 +986,8 @@ out:
  * are seen first.
  */
 static s64
-cmp_layout(struct pnfs_layout_range *l1,
-          struct pnfs_layout_range *l2)
+pnfs_lseg_range_cmp(const struct pnfs_layout_range *l1,
+          const struct pnfs_layout_range *l2)
 {
        s64 d;
 
@@ -1012,7 +1014,7 @@ pnfs_layout_insert_lseg(struct pnfs_layout_hdr *lo,
        dprintk("%s:Begin\n", __func__);
 
        list_for_each_entry(lp, &lo->plh_segs, pls_list) {
-               if (cmp_layout(&lseg->pls_range, &lp->pls_range) > 0)
+               if (pnfs_lseg_range_cmp(&lseg->pls_range, &lp->pls_range) > 0)
                        continue;
                list_add_tail(&lseg->pls_list, &lp->pls_list);
                dprintk("%s: inserted lseg %p "
@@ -1050,7 +1052,7 @@ alloc_init_layout_hdr(struct inode *ino,
        INIT_LIST_HEAD(&lo->plh_segs);
        INIT_LIST_HEAD(&lo->plh_bulk_destroy);
        lo->plh_inode = ino;
-       lo->plh_lc_cred = get_rpccred(ctx->state->owner->so_cred);
+       lo->plh_lc_cred = get_rpccred(ctx->cred);
        return lo;
 }
 
@@ -1091,21 +1093,21 @@ out_existing:
  * READ                READ    true
  * READ                RW      true
  */
-static int
-is_matching_lseg(struct pnfs_layout_range *ls_range,
-                struct pnfs_layout_range *range)
+static bool
+pnfs_lseg_range_match(const struct pnfs_layout_range *ls_range,
+                const struct pnfs_layout_range *range)
 {
        struct pnfs_layout_range range1;
 
        if ((range->iomode == IOMODE_RW &&
             ls_range->iomode != IOMODE_RW) ||
-           !lo_seg_intersecting(ls_range, range))
+           !pnfs_lseg_range_intersecting(ls_range, range))
                return 0;
 
        /* range1 covers only the first byte in the range */
        range1 = *range;
        range1.length = 1;
-       return lo_seg_contained(ls_range, &range1);
+       return pnfs_lseg_range_contained(ls_range, &range1);
 }
 
 /*
@@ -1121,7 +1123,7 @@ pnfs_find_lseg(struct pnfs_layout_hdr *lo,
 
        list_for_each_entry(lseg, &lo->plh_segs, pls_list) {
                if (test_bit(NFS_LSEG_VALID, &lseg->pls_flags) &&
-                   is_matching_lseg(&lseg->pls_range, range)) {
+                   pnfs_lseg_range_match(&lseg->pls_range, range)) {
                        ret = pnfs_get_lseg(lseg);
                        break;
                }