[PATCH] Remove SWP_BLOCKDEV

	Below is a followup to bd_claim patch - it is the last one
from the current series.  Removes SWP_BLOCKDEV flag - it isn't needed
anymore.

include/linux/swap.h

@@ -64,7 +64,6 @@ typedef struct {
 enum {
 	SWP_USED	= (1 << 0),	/* is slot in swap_info[] used? */
 	SWP_WRITEOK	= (1 << 1),	/* ok to write to this swap?	*/
-	SWP_BLOCKDEV	= (1 << 2),	/* is this swap a block device? */
 	SWP_ACTIVE	= (SWP_USED | SWP_WRITEOK),
 };
 

mm/swapfile.c

@@ -809,12 +809,16 @@ int get_swaparea_info(char *buf)
 
 	len = sprintf(buf, "Filename\t\t\t\tType\t\tSize\tUsed\tPriority\n");
 	for (i = 0 ; i < nr_swapfiles ; i++, ptr++) {
-		if ((ptr->flags & SWP_USED) && ptr->swap_map) {
-			char * path = d_path(ptr->swap_file->f_dentry,
-						ptr->swap_file->f_vfsmnt,
-						page, PAGE_SIZE);
-			int j, usedswap = 0;
-			for (j = 0; j < ptr->max; ++j)
+		int j, usedswap;
+		struct file *file;
+		char *path;
+
+		if (!(ptr->flags & SWP_USED) || !ptr->swap_map)
+			continue;
+
+		file = ptr->swap_file;
+		path = d_path(file->f_dentry, file->f_vfsmnt, page, PAGE_SIZE);
+		for (j = 0,usedswap = 0; j < ptr->max; ++j)
 			switch (ptr->swap_map[j]) {
 				case SWAP_MAP_BAD:
 				case 0:
@@ -824,13 +828,12 @@ int get_swaparea_info(char *buf)
 			}
 		len += sprintf(buf + len, "%-39s %s\t%d\t%d\t%d\n",
 			       path,
-				       (ptr->flags & SWP_BLOCKDEV) ?
+			       S_ISBLK(file->f_dentry->d_inode->i_mode) ?
 					"partition" : "file\t",
 			       ptr->pages << (PAGE_SHIFT - 10),
 			       usedswap << (PAGE_SHIFT - 10),
 			       ptr->prio);
 	}
-	}
 	free_page((unsigned long) page);
 	return len;
 }
@@ -1037,8 +1040,6 @@ asmlinkage long sys_swapon(const char * specialfile, int swap_flags)
 	swap_device_lock(p);
 	p->max = maxpages;
 	p->flags = SWP_ACTIVE;
-	if (S_ISBLK(swap_file->f_dentry->d_inode->i_mode))
-		p->flags |= SWP_BLOCKDEV;
 	p->pages = nr_good_pages;
 	nr_swap_pages += nr_good_pages;
 	total_swap_pages += nr_good_pages;