xfs: convert kmem_free() for kvmalloc users to kvfree()

Start getting rid of kmem_free() by converting all the cases where
memory can come from vmalloc interfaces to calling kvfree()
directly.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>
Signed-off-by: Chandan Babu R <chandanbabu@kernel.org>

fs/xfs/xfs_acl.c

@@ -167,7 +167,7 @@ xfs_get_acl(struct inode *inode, int type, bool rcu)
 		acl = ERR_PTR(error);
 	}
 
-	kmem_free(args.value);
+	kvfree(args.value);
 	return acl;
 }
 
@@ -204,7 +204,7 @@ __xfs_set_acl(struct inode *inode, struct posix_acl *acl, int type)
 	}
 
 	error = xfs_attr_change(&args);
-	kmem_free(args.value);
+	kvfree(args.value);
 
 	/*
 	 * If the attribute didn't exist to start with that's fine.

fs/xfs/xfs_attr_item.c

@@ -108,7 +108,7 @@ STATIC void
 xfs_attri_item_free(
 	struct xfs_attri_log_item	*attrip)
 {
-	kmem_free(attrip->attri_item.li_lv_shadow);
+	kvfree(attrip->attri_item.li_lv_shadow);
 	xfs_attri_log_nameval_put(attrip->attri_nameval);
 	kmem_cache_free(xfs_attri_cache, attrip);
 }
@@ -251,7 +251,7 @@ static inline struct xfs_attrd_log_item *ATTRD_ITEM(struct xfs_log_item *lip)
 STATIC void
 xfs_attrd_item_free(struct xfs_attrd_log_item *attrdp)
 {
-	kmem_free(attrdp->attrd_item.li_lv_shadow);
+	kvfree(attrdp->attrd_item.li_lv_shadow);
 	kmem_cache_free(xfs_attrd_cache, attrdp);
 }
 

fs/xfs/xfs_bmap_item.c

@@ -40,7 +40,7 @@ STATIC void
 xfs_bui_item_free(
 	struct xfs_bui_log_item	*buip)
 {
-	kmem_free(buip->bui_item.li_lv_shadow);
+	kvfree(buip->bui_item.li_lv_shadow);
 	kmem_cache_free(xfs_bui_cache, buip);
 }
 
@@ -201,7 +201,7 @@ xfs_bud_item_release(
 	struct xfs_bud_log_item	*budp = BUD_ITEM(lip);
 
 	xfs_bui_release(budp->bud_buip);
-	kmem_free(budp->bud_item.li_lv_shadow);
+	kvfree(budp->bud_item.li_lv_shadow);
 	kmem_cache_free(xfs_bud_cache, budp);
 }
 

fs/xfs/xfs_buf_item.c

@@ -1044,7 +1044,7 @@ xfs_buf_item_free(
 	struct xfs_buf_log_item	*bip)
 {
 	xfs_buf_item_free_format(bip);
-	kmem_free(bip->bli_item.li_lv_shadow);
+	kvfree(bip->bli_item.li_lv_shadow);
 	kmem_cache_free(xfs_buf_item_cache, bip);
 }
 

fs/xfs/xfs_dquot.c

@@ -53,7 +53,7 @@ xfs_qm_dqdestroy(
 {
 	ASSERT(list_empty(&dqp->q_lru));
 
-	kmem_free(dqp->q_logitem.qli_item.li_lv_shadow);
+	kvfree(dqp->q_logitem.qli_item.li_lv_shadow);
 	mutex_destroy(&dqp->q_qlock);
 
 	XFS_STATS_DEC(dqp->q_mount, xs_qm_dquot);

fs/xfs/xfs_extfree_item.c

@@ -40,7 +40,7 @@ STATIC void
 xfs_efi_item_free(
 	struct xfs_efi_log_item	*efip)
 {
-	kmem_free(efip->efi_item.li_lv_shadow);
+	kvfree(efip->efi_item.li_lv_shadow);
 	if (efip->efi_format.efi_nextents > XFS_EFI_MAX_FAST_EXTENTS)
 		kmem_free(efip);
 	else
@@ -229,7 +229,7 @@ static inline struct xfs_efd_log_item *EFD_ITEM(struct xfs_log_item *lip)
 STATIC void
 xfs_efd_item_free(struct xfs_efd_log_item *efdp)
 {
-	kmem_free(efdp->efd_item.li_lv_shadow);
+	kvfree(efdp->efd_item.li_lv_shadow);
 	if (efdp->efd_format.efd_nextents > XFS_EFD_MAX_FAST_EXTENTS)
 		kmem_free(efdp);
 	else

fs/xfs/xfs_icreate_item.c

@@ -63,7 +63,7 @@ STATIC void
 xfs_icreate_item_release(
 	struct xfs_log_item	*lip)
 {
-	kmem_free(ICR_ITEM(lip)->ic_item.li_lv_shadow);
+	kvfree(ICR_ITEM(lip)->ic_item.li_lv_shadow);
 	kmem_cache_free(xfs_icreate_cache, ICR_ITEM(lip));
 }
 

fs/xfs/xfs_inode_item.c

@@ -856,7 +856,7 @@ xfs_inode_item_destroy(
 	ASSERT(iip->ili_item.li_buf == NULL);
 
 	ip->i_itemp = NULL;
-	kmem_free(iip->ili_item.li_lv_shadow);
+	kvfree(iip->ili_item.li_lv_shadow);
 	kmem_cache_free(xfs_ili_cache, iip);
 }
 

fs/xfs/xfs_ioctl.c

@@ -493,7 +493,7 @@ xfs_attrmulti_attr_get(
 		error = -EFAULT;
 
 out_kfree:
-	kmem_free(args.value);
+	kvfree(args.value);
 	return error;
 }
 

fs/xfs/xfs_log.c

@@ -1662,7 +1662,7 @@ xlog_alloc_log(
 out_free_iclog:
 	for (iclog = log->l_iclog; iclog; iclog = prev_iclog) {
 		prev_iclog = iclog->ic_next;
-		kmem_free(iclog->ic_data);
+		kvfree(iclog->ic_data);
 		kmem_free(iclog);
 		if (prev_iclog == log->l_iclog)
 			break;
@@ -2119,7 +2119,7 @@ xlog_dealloc_log(
 	iclog = log->l_iclog;
 	for (i = 0; i < log->l_iclog_bufs; i++) {
 		next_iclog = iclog->ic_next;
-		kmem_free(iclog->ic_data);
+		kvfree(iclog->ic_data);
 		kmem_free(iclog);
 		iclog = next_iclog;
 	}

fs/xfs/xfs_log_cil.c

@@ -339,7 +339,7 @@ xlog_cil_alloc_shadow_bufs(
 			 * the buffer, only the log vector header and the iovec
 			 * storage.
 			 */
-			kmem_free(lip->li_lv_shadow);
+			kvfree(lip->li_lv_shadow);
 			lv = xlog_kvmalloc(buf_size);
 
 			memset(lv, 0, xlog_cil_iovec_space(niovecs));

fs/xfs/xfs_log_recover.c

@@ -361,7 +361,7 @@ xlog_find_verify_cycle(
 	*new_blk = -1;
 
 out:
-	kmem_free(buffer);
+	kvfree(buffer);
 	return error;
 }
 
@@ -477,7 +477,7 @@ xlog_find_verify_log_record(
 		*last_blk = i;
 
 out:
-	kmem_free(buffer);
+	kvfree(buffer);
 	return error;
 }
 
@@ -731,7 +731,7 @@ xlog_find_head(
 			goto out_free_buffer;
 	}
 
-	kmem_free(buffer);
+	kvfree(buffer);
 	if (head_blk == log_bbnum)
 		*return_head_blk = 0;
 	else
@@ -745,7 +745,7 @@ xlog_find_head(
 	return 0;
 
 out_free_buffer:
-	kmem_free(buffer);
+	kvfree(buffer);
 	if (error)
 		xfs_warn(log->l_mp, "failed to find log head");
 	return error;
@@ -999,7 +999,7 @@ xlog_verify_tail(
 		"Tail block (0x%llx) overwrite detected. Updated to 0x%llx",
 			 orig_tail, *tail_blk);
 out:
-	kmem_free(buffer);
+	kvfree(buffer);
 	return error;
 }
 
@@ -1046,7 +1046,7 @@ xlog_verify_head(
 	error = xlog_rseek_logrec_hdr(log, *head_blk, *tail_blk,
 				      XLOG_MAX_ICLOGS, tmp_buffer,
 				      &tmp_rhead_blk, &tmp_rhead, &tmp_wrapped);
-	kmem_free(tmp_buffer);
+	kvfree(tmp_buffer);
 	if (error < 0)
 		return error;
 
@@ -1365,7 +1365,7 @@ xlog_find_tail(
 		error = xlog_clear_stale_blocks(log, tail_lsn);
 
 done:
-	kmem_free(buffer);
+	kvfree(buffer);
 
 	if (error)
 		xfs_warn(log->l_mp, "failed to locate log tail");
@@ -1399,6 +1399,7 @@ xlog_find_zeroed(
 	xfs_daddr_t	new_blk, last_blk, start_blk;
 	xfs_daddr_t     num_scan_bblks;
 	int	        error, log_bbnum = log->l_logBBsize;
+	int		ret = 1;
 
 	*blk_no = 0;
 
@@ -1413,8 +1414,7 @@ xlog_find_zeroed(
 	first_cycle = xlog_get_cycle(offset);
 	if (first_cycle == 0) {		/* completely zeroed log */
 		*blk_no = 0;
-		kmem_free(buffer);
-		return 1;
+		goto out_free_buffer;
 	}
 
 	/* check partially zeroed log */
@@ -1424,8 +1424,8 @@ xlog_find_zeroed(
 
 	last_cycle = xlog_get_cycle(offset);
 	if (last_cycle != 0) {		/* log completely written to */
-		kmem_free(buffer);
-		return 0;
+		ret = 0;
+		goto out_free_buffer;
 	}
 
 	/* we have a partially zeroed log */
@@ -1471,10 +1471,10 @@ xlog_find_zeroed(
 
 	*blk_no = last_blk;
 out_free_buffer:
-	kmem_free(buffer);
+	kvfree(buffer);
 	if (error)
 		return error;
-	return 1;
+	return ret;
 }
 
 /*
@@ -1583,7 +1583,7 @@ xlog_write_log_records(
 	}
 
 out_free_buffer:
-	kmem_free(buffer);
+	kvfree(buffer);
 	return error;
 }
 
@@ -2183,7 +2183,7 @@ xlog_recover_add_to_trans(
 		"bad number of regions (%d) in inode log format",
 				  in_f->ilf_size);
 			ASSERT(0);
-			kmem_free(ptr);
+			kvfree(ptr);
 			return -EFSCORRUPTED;
 		}
 
@@ -2197,7 +2197,7 @@ xlog_recover_add_to_trans(
 	"log item region count (%d) overflowed size (%d)",
 				item->ri_cnt, item->ri_total);
 		ASSERT(0);
-		kmem_free(ptr);
+		kvfree(ptr);
 		return -EFSCORRUPTED;
 	}
 
@@ -2227,7 +2227,7 @@ xlog_recover_free_trans(
 		/* Free the regions in the item. */
 		list_del(&item->ri_list);
 		for (i = 0; i < item->ri_cnt; i++)
-			kmem_free(item->ri_buf[i].i_addr);
+			kvfree(item->ri_buf[i].i_addr);
 		/* Free the item itself */
 		kmem_free(item->ri_buf);
 		kmem_free(item);
@@ -3024,7 +3024,7 @@ xlog_do_recovery_pass(
 
 		hblks = xlog_logrec_hblks(log, rhead);
 		if (hblks != 1) {
-			kmem_free(hbp);
+			kvfree(hbp);
 			hbp = xlog_alloc_buffer(log, hblks);
 		}
 	} else {
@@ -3038,7 +3038,7 @@ xlog_do_recovery_pass(
 		return -ENOMEM;
 	dbp = xlog_alloc_buffer(log, BTOBB(h_size));
 	if (!dbp) {
-		kmem_free(hbp);
+		kvfree(hbp);
 		return -ENOMEM;
 	}
 
@@ -3199,9 +3199,9 @@ xlog_do_recovery_pass(
 	}
 
  bread_err2:
-	kmem_free(dbp);
+	kvfree(dbp);
  bread_err1:
-	kmem_free(hbp);
+	kvfree(hbp);
 
 	/*
 	 * Submit buffers that have been added from the last record processed,

fs/xfs/xfs_refcount_item.c

@@ -36,7 +36,7 @@ STATIC void
 xfs_cui_item_free(
 	struct xfs_cui_log_item	*cuip)
 {
-	kmem_free(cuip->cui_item.li_lv_shadow);
+	kvfree(cuip->cui_item.li_lv_shadow);
 	if (cuip->cui_format.cui_nextents > XFS_CUI_MAX_FAST_EXTENTS)
 		kmem_free(cuip);
 	else
@@ -207,7 +207,7 @@ xfs_cud_item_release(
 	struct xfs_cud_log_item	*cudp = CUD_ITEM(lip);
 
 	xfs_cui_release(cudp->cud_cuip);
-	kmem_free(cudp->cud_item.li_lv_shadow);
+	kvfree(cudp->cud_item.li_lv_shadow);
 	kmem_cache_free(xfs_cud_cache, cudp);
 }
 

fs/xfs/xfs_rmap_item.c

@@ -36,7 +36,7 @@ STATIC void
 xfs_rui_item_free(
 	struct xfs_rui_log_item	*ruip)
 {
-	kmem_free(ruip->rui_item.li_lv_shadow);
+	kvfree(ruip->rui_item.li_lv_shadow);
 	if (ruip->rui_format.rui_nextents > XFS_RUI_MAX_FAST_EXTENTS)
 		kmem_free(ruip);
 	else
@@ -206,7 +206,7 @@ xfs_rud_item_release(
 	struct xfs_rud_log_item	*rudp = RUD_ITEM(lip);
 
 	xfs_rui_release(rudp->rud_ruip);
-	kmem_free(rudp->rud_item.li_lv_shadow);
+	kvfree(rudp->rud_item.li_lv_shadow);
 	kmem_cache_free(xfs_rud_cache, rudp);
 }
 

fs/xfs/xfs_rtalloc.c

@@ -1059,10 +1059,10 @@ xfs_growfs_rt(
 	 */
 	if (rsum_cache != mp->m_rsum_cache) {
 		if (error) {
-			kmem_free(mp->m_rsum_cache);
+			kvfree(mp->m_rsum_cache);
 			mp->m_rsum_cache = rsum_cache;
 		} else {
-			kmem_free(rsum_cache);
+			kvfree(rsum_cache);
 		}
 	}
 
@@ -1233,7 +1233,7 @@ void
 xfs_rtunmount_inodes(
 	struct xfs_mount	*mp)
 {
-	kmem_free(mp->m_rsum_cache);
+	kvfree(mp->m_rsum_cache);
 	if (mp->m_rbmip)
 		xfs_irele(mp->m_rbmip);
 	if (mp->m_rsumip)