Automatic merge with /usr/src/ntfs-2.6.git.

1 files changed, 25 insertions, 14 deletions

diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index ded53584a89..b63160f83ba 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: scan.c,v 1.115 2004/11/17 12:59:08 dedekind Exp $
+ * $Id: scan.c,v 1.119 2005/02/17 17:51:13 dedekind Exp $
  *
  */
 #include <linux/kernel.h>
@@ -19,7 +19,7 @@
 #include <linux/compiler.h>
 #include "nodelist.h"
 
-#define EMPTY_SCAN_SIZE 1024
+#define DEFAULT_EMPTY_SCAN_SIZE 1024
 
 #define DIRTY_SPACE(x) do { typeof(x) _x = (x); \
 		c->free_size -= _x; c->dirty_size += _x; \
@@ -68,13 +68,21 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
 static inline int min_free(struct jffs2_sb_info *c)
 {
 	uint32_t min = 2 * sizeof(struct jffs2_raw_inode);
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 	if (!jffs2_can_mark_obsolete(c) && min < c->wbuf_pagesize)
 		return c->wbuf_pagesize;
 #endif
 	return min;
 
 }
+
+static inline uint32_t EMPTY_SCAN_SIZE(uint32_t sector_size) {
+	if (sector_size < DEFAULT_EMPTY_SCAN_SIZE)
+		return sector_size;
+	else
+		return DEFAULT_EMPTY_SCAN_SIZE;
+}
+
 int jffs2_scan_medium(struct jffs2_sb_info *c)
 {
 	int i, ret;
@@ -220,7 +228,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 		c->dirty_size -= c->nextblock->dirty_size;
 		c->nextblock->dirty_size = 0;
 	}
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 	if (!jffs2_can_mark_obsolete(c) && c->nextblock && (c->nextblock->free_size & (c->wbuf_pagesize-1))) {
 		/* If we're going to start writing into a block which already 
 		   contains data, and the end of the data isn't page-aligned,
@@ -286,7 +294,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 	uint32_t hdr_crc, buf_ofs, buf_len;
 	int err;
 	int noise = 0;
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 	int cleanmarkerfound = 0;
 #endif
 
@@ -295,7 +303,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 
 	D1(printk(KERN_DEBUG "jffs2_scan_eraseblock(): Scanning block at 0x%x\n", ofs));
 
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 	if (jffs2_cleanmarker_oob(c)) {
 		int ret = jffs2_check_nand_cleanmarker(c, jeb);
 		D2(printk(KERN_NOTICE "jffs_check_nand_cleanmarker returned %d\n",ret));
@@ -316,7 +324,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 	if (!buf_size) {
 		buf_len = c->sector_size;
 	} else {
-		buf_len = EMPTY_SCAN_SIZE;
+		buf_len = EMPTY_SCAN_SIZE(c->sector_size);
 		err = jffs2_fill_scan_buf(c, buf, buf_ofs, buf_len);
 		if (err)
 			return err;
@@ -326,11 +334,11 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 	ofs = 0;
 
 	/* Scan only 4KiB of 0xFF before declaring it's empty */
-	while(ofs < EMPTY_SCAN_SIZE && *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF)
+	while(ofs < EMPTY_SCAN_SIZE(c->sector_size) && *(uint32_t *)(&buf[ofs]) == 0xFFFFFFFF)
 		ofs += 4;
 
-	if (ofs == EMPTY_SCAN_SIZE) {
-#ifdef CONFIG_JFFS2_FS_NAND
+	if (ofs == EMPTY_SCAN_SIZE(c->sector_size)) {
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
 		if (jffs2_cleanmarker_oob(c)) {
 			/* scan oob, take care of cleanmarker */
 			int ret = jffs2_check_oob_empty(c, jeb, cleanmarkerfound);
@@ -343,7 +351,10 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
 		}
 #endif
 		D1(printk(KERN_DEBUG "Block at 0x%08x is empty (erased)\n", jeb->offset));
-		return BLK_STATE_ALLFF;	/* OK to erase if all blocks are like this */
+		if (c->cleanmarker_size == 0)
+			return BLK_STATE_CLEANMARKER;	/* don't bother with re-erase */
+		else
+			return BLK_STATE_ALLFF;	/* OK to erase if all blocks are like this */
 	}
 	if (ofs) {
 		D1(printk(KERN_DEBUG "Free space at %08x ends at %08x\n", jeb->offset,
@@ -422,8 +433,8 @@ scan_more:
 			/* If we're only checking the beginning of a block with a cleanmarker,
 			   bail now */
 			if (buf_ofs == jeb->offset && jeb->used_size == PAD(c->cleanmarker_size) && 
-			    c->cleanmarker_size && !jeb->dirty_size && !jeb->first_node->next_in_ino) {
-				D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE));
+			    c->cleanmarker_size && !jeb->dirty_size && !jeb->first_node->next_phys) {
+				D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE(c->sector_size)));
 				return BLK_STATE_CLEANMARKER;
 			}
 
@@ -618,7 +629,7 @@ scan_more:
 	}
 
 	if ((jeb->used_size + jeb->unchecked_size) == PAD(c->cleanmarker_size) && !jeb->dirty_size 
-		&& (!jeb->first_node || !jeb->first_node->next_in_ino) )
+		&& (!jeb->first_node || !jeb->first_node->next_phys) )
 		return BLK_STATE_CLEANMARKER;
 		
 	/* move blocks with max 4 byte dirty space to cleanlist */