1 files changed, 70 insertions, 87 deletions

diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index 69100615d9ae..1342f0158e9b 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -7,7 +7,7 @@
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: write.c,v 1.92 2005/04/13 13:22:35 dwmw2 Exp $
+ * $Id: write.c,v 1.97 2005/11/07 11:14:42 gleixner Exp $
  *
  */
 
@@ -54,35 +54,7 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
 	return 0;
 }
 
-#if CONFIG_JFFS2_FS_DEBUG > 0
-static void writecheck(struct jffs2_sb_info *c, uint32_t ofs)
-{
-	unsigned char buf[16];
-	size_t retlen;
-	int ret, i;
-
-	ret = jffs2_flash_read(c, ofs, 16, &retlen, buf);
-	if (ret || (retlen != 16)) {
-		D1(printk(KERN_DEBUG "read failed or short in writecheck(). ret %d, retlen %zd\n", ret, retlen));
-		return;
-	}
-	ret = 0;
-	for (i=0; i<16; i++) {
-		if (buf[i] != 0xff)
-			ret = 1;
-	}
-	if (ret) {
-		printk(KERN_WARNING "ARGH. About to write node to 0x%08x on flash, but there are data already there:\n", ofs);
-		printk(KERN_WARNING "0x%08x: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", 
-		       ofs,
-		       buf[0], buf[1], buf[2], buf[3], buf[4], buf[5], buf[6], buf[7],
-		       buf[8], buf[9], buf[10], buf[11], buf[12], buf[13], buf[14], buf[15]);
-	}
-}
-#endif
-
-
-/* jffs2_write_dnode - given a raw_inode, allocate a full_dnode for it, 
+/* jffs2_write_dnode - given a raw_inode, allocate a full_dnode for it,
    write it to the flash, link it into the existing inode/fragment list */
 
 struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_raw_inode *ri, const unsigned char *data, uint32_t datalen, uint32_t flash_ofs, int alloc_mode)
@@ -106,7 +78,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 	vecs[1].iov_base = (unsigned char *)data;
 	vecs[1].iov_len = datalen;
 
-	D1(writecheck(c, flash_ofs));
+	jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len);
 
 	if (je32_to_cpu(ri->totlen) != sizeof(*ri) + datalen) {
 		printk(KERN_WARNING "jffs2_write_dnode: ri->totlen (0x%08x) != sizeof(*ri) (0x%08zx) + datalen (0x%08x)\n", je32_to_cpu(ri->totlen), sizeof(*ri), datalen);
@@ -114,7 +86,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 	raw = jffs2_alloc_raw_node_ref();
 	if (!raw)
 		return ERR_PTR(-ENOMEM);
-	
+
 	fn = jffs2_alloc_full_dnode();
 	if (!fn) {
 		jffs2_free_raw_node_ref(raw);
@@ -138,7 +110,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 	if ((alloc_mode!=ALLOC_GC) && (je32_to_cpu(ri->version) < f->highest_version)) {
 		BUG_ON(!retried);
 		D1(printk(KERN_DEBUG "jffs2_write_dnode : dnode_version %d, "
-				"highest version %d -> updating dnode\n", 
+				"highest version %d -> updating dnode\n",
 				je32_to_cpu(ri->version), f->highest_version));
 		ri->version = cpu_to_je32(++f->highest_version);
 		ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
@@ -148,7 +120,7 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 				 (alloc_mode==ALLOC_GC)?0:f->inocache->ino);
 
 	if (ret || (retlen != sizeof(*ri) + datalen)) {
-		printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n", 
+		printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
 		       sizeof(*ri)+datalen, flash_ofs, ret, retlen);
 
 		/* Mark the space as dirtied */
@@ -156,10 +128,10 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 			/* Doesn't belong to any inode */
 			raw->next_in_ino = NULL;
 
-			/* Don't change raw->size to match retlen. We may have 
+			/* Don't change raw->size to match retlen. We may have
 			   written the node header already, and only the data will
 			   seem corrupted, in which case the scan would skip over
-			   any node we write before the original intended end of 
+			   any node we write before the original intended end of
 			   this node */
 			raw->flash_offset |= REF_OBSOLETE;
 			jffs2_add_physical_node_ref(c, raw);
@@ -176,26 +148,28 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 			retried = 1;
 
 			D1(printk(KERN_DEBUG "Retrying failed write.\n"));
-			
-			ACCT_SANITY_CHECK(c,jeb);
-			D1(ACCT_PARANOIA_CHECK(jeb));
+
+			jffs2_dbg_acct_sanity_check(c,jeb);
+			jffs2_dbg_acct_paranoia_check(c, jeb);
 
 			if (alloc_mode == ALLOC_GC) {
-				ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &flash_ofs, &dummy);
+				ret = jffs2_reserve_space_gc(c, sizeof(*ri) + datalen, &flash_ofs,
+							&dummy, JFFS2_SUMMARY_INODE_SIZE);
 			} else {
 				/* Locking pain */
 				up(&f->sem);
 				jffs2_complete_reservation(c);
-			
-				ret = jffs2_reserve_space(c, sizeof(*ri) + datalen, &flash_ofs, &dummy, alloc_mode);
+
+				ret = jffs2_reserve_space(c, sizeof(*ri) + datalen, &flash_ofs,
+							&dummy, alloc_mode, JFFS2_SUMMARY_INODE_SIZE);
 				down(&f->sem);
 			}
 
 			if (!ret) {
 				D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
 
-				ACCT_SANITY_CHECK(c,jeb);
-				D1(ACCT_PARANOIA_CHECK(jeb));
+				jffs2_dbg_acct_sanity_check(c,jeb);
+				jffs2_dbg_acct_paranoia_check(c, jeb);
 
 				goto retry;
 			}
@@ -207,9 +181,9 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 		return ERR_PTR(ret?ret:-EIO);
 	}
 	/* Mark the space used */
-	/* If node covers at least a whole page, or if it starts at the 
-	   beginning of a page and runs to the end of the file, or if 
-	   it's a hole node, mark it REF_PRISTINE, else REF_NORMAL. 
+	/* If node covers at least a whole page, or if it starts at the
+	   beginning of a page and runs to the end of the file, or if
+	   it's a hole node, mark it REF_PRISTINE, else REF_NORMAL.
 	*/
 	if ((je32_to_cpu(ri->dsize) >= PAGE_CACHE_SIZE) ||
 	    ( ((je32_to_cpu(ri->offset)&(PAGE_CACHE_SIZE-1))==0) &&
@@ -227,12 +201,12 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
 	spin_unlock(&c->erase_completion_lock);
 
 	D1(printk(KERN_DEBUG "jffs2_write_dnode wrote node at 0x%08x(%d) with dsize 0x%x, csize 0x%x, node_crc 0x%08x, data_crc 0x%08x, totlen 0x%08x\n",
-		  flash_ofs, ref_flags(raw), je32_to_cpu(ri->dsize), 
+		  flash_ofs, ref_flags(raw), je32_to_cpu(ri->dsize),
 		  je32_to_cpu(ri->csize), je32_to_cpu(ri->node_crc),
 		  je32_to_cpu(ri->data_crc), je32_to_cpu(ri->totlen)));
 
 	if (retried) {
-		ACCT_SANITY_CHECK(c,NULL);
+		jffs2_dbg_acct_sanity_check(c,NULL);
 	}
 
 	return fn;
@@ -247,10 +221,9 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 	int retried = 0;
 	int ret;
 
-	D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n", 
+	D1(printk(KERN_DEBUG "jffs2_write_dirent(ino #%u, name at *0x%p \"%s\"->ino #%u, name_crc 0x%08x)\n",
 		  je32_to_cpu(rd->pino), name, name, je32_to_cpu(rd->ino),
 		  je32_to_cpu(rd->name_crc)));
-	D1(writecheck(c, flash_ofs));
 
 	D1(if(je32_to_cpu(rd->hdr_crc) != crc32(0, rd, sizeof(struct jffs2_unknown_node)-4)) {
 		printk(KERN_CRIT "Eep. CRC not correct in jffs2_write_dirent()\n");
@@ -262,7 +235,9 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 	vecs[0].iov_len = sizeof(*rd);
 	vecs[1].iov_base = (unsigned char *)name;
 	vecs[1].iov_len = namelen;
-	
+
+	jffs2_dbg_prewrite_paranoia_check(c, flash_ofs, vecs[0].iov_len + vecs[1].iov_len);
+
 	raw = jffs2_alloc_raw_node_ref();
 
 	if (!raw)
@@ -301,7 +276,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 	ret = jffs2_flash_writev(c, vecs, 2, flash_ofs, &retlen,
 				 (alloc_mode==ALLOC_GC)?0:je32_to_cpu(rd->pino));
 	if (ret || (retlen != sizeof(*rd) + namelen)) {
-		printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n", 
+		printk(KERN_NOTICE "Write of %zd bytes at 0x%08x failed. returned %d, retlen %zd\n",
 			       sizeof(*rd)+namelen, flash_ofs, ret, retlen);
 		/* Mark the space as dirtied */
 		if (retlen) {
@@ -322,24 +297,26 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 
 			D1(printk(KERN_DEBUG "Retrying failed write.\n"));
 
-			ACCT_SANITY_CHECK(c,jeb);
-			D1(ACCT_PARANOIA_CHECK(jeb));
+			jffs2_dbg_acct_sanity_check(c,jeb);
+			jffs2_dbg_acct_paranoia_check(c, jeb);
 
 			if (alloc_mode == ALLOC_GC) {
-				ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &flash_ofs, &dummy);
+				ret = jffs2_reserve_space_gc(c, sizeof(*rd) + namelen, &flash_ofs,
+							&dummy, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 			} else {
 				/* Locking pain */
 				up(&f->sem);
 				jffs2_complete_reservation(c);
-			
-				ret = jffs2_reserve_space(c, sizeof(*rd) + namelen, &flash_ofs, &dummy, alloc_mode);
+
+				ret = jffs2_reserve_space(c, sizeof(*rd) + namelen, &flash_ofs,
+							&dummy, alloc_mode, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 				down(&f->sem);
 			}
 
 			if (!ret) {
 				D1(printk(KERN_DEBUG "Allocated space at 0x%08x to retry failed write.\n", flash_ofs));
-				ACCT_SANITY_CHECK(c,jeb);
-				D1(ACCT_PARANOIA_CHECK(jeb));
+				jffs2_dbg_acct_sanity_check(c,jeb);
+				jffs2_dbg_acct_paranoia_check(c, jeb);
 				goto retry;
 			}
 			D1(printk(KERN_DEBUG "Failed to allocate space to retry failed write: %d!\n", ret));
@@ -359,7 +336,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
 	spin_unlock(&c->erase_completion_lock);
 
 	if (retried) {
-		ACCT_SANITY_CHECK(c,NULL);
+		jffs2_dbg_acct_sanity_check(c,NULL);
 	}
 
 	return fd;
@@ -369,7 +346,7 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
    we don't have to go digging in struct inode or its equivalent. It should set:
    mode, uid, gid, (starting)isize, atime, ctime, mtime */
 int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
-			    struct jffs2_raw_inode *ri, unsigned char *buf, 
+			    struct jffs2_raw_inode *ri, unsigned char *buf,
 			    uint32_t offset, uint32_t writelen, uint32_t *retlen)
 {
 	int ret = 0;
@@ -377,7 +354,7 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 
        	D1(printk(KERN_DEBUG "jffs2_write_inode_range(): Ino #%u, ofs 0x%x, len 0x%x\n",
 		  f->inocache->ino, offset, writelen));
-		
+
 	while(writelen) {
 		struct jffs2_full_dnode *fn;
 		unsigned char *comprbuf = NULL;
@@ -389,7 +366,8 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 	retry:
 		D2(printk(KERN_DEBUG "jffs2_commit_write() loop: 0x%x to write to 0x%x\n", writelen, offset));
 
-		ret = jffs2_reserve_space(c, sizeof(*ri) + JFFS2_MIN_DATA_LEN, &phys_ofs, &alloclen, ALLOC_NORMAL);
+		ret = jffs2_reserve_space(c, sizeof(*ri) + JFFS2_MIN_DATA_LEN, &phys_ofs,
+					&alloclen, ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 		if (ret) {
 			D1(printk(KERN_DEBUG "jffs2_reserve_space returned %d\n", ret));
 			break;
@@ -473,10 +451,11 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
 	uint32_t alloclen, phys_ofs;
 	int ret;
 
-	/* Try to reserve enough space for both node and dirent. 
-	 * Just the node will do for now, though 
+	/* Try to reserve enough space for both node and dirent.
+	 * Just the node will do for now, though
 	 */
-	ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL);
+	ret = jffs2_reserve_space(c, sizeof(*ri), &phys_ofs, &alloclen, ALLOC_NORMAL,
+				JFFS2_SUMMARY_INODE_SIZE);
 	D1(printk(KERN_DEBUG "jffs2_do_create(): reserved 0x%x bytes\n", alloclen));
 	if (ret) {
 		up(&f->sem);
@@ -498,15 +477,16 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
 		jffs2_complete_reservation(c);
 		return PTR_ERR(fn);
 	}
-	/* No data here. Only a metadata node, which will be 
+	/* No data here. Only a metadata node, which will be
 	   obsoleted by the first data write
 	*/
 	f->metadata = fn;
 
 	up(&f->sem);
 	jffs2_complete_reservation(c);
-	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, ALLOC_NORMAL);
-		
+	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
+				ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
+
 	if (ret) {
 		/* Eep. */
 		D1(printk(KERN_DEBUG "jffs2_reserve_space() for dirent failed\n"));
@@ -539,9 +519,9 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
 	fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_NORMAL);
 
 	jffs2_free_raw_dirent(rd);
-	
+
 	if (IS_ERR(fd)) {
-		/* dirent failed to write. Delete the inode normally 
+		/* dirent failed to write. Delete the inode normally
 		   as if it were the final unlink() */
 		jffs2_complete_reservation(c);
 		up(&dir_f->sem);
@@ -560,14 +540,15 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
 
 
 int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
-		    const char *name, int namelen, struct jffs2_inode_info *dead_f)
+		    const char *name, int namelen, struct jffs2_inode_info *dead_f,
+		    uint32_t time)
 {
 	struct jffs2_raw_dirent *rd;
 	struct jffs2_full_dirent *fd;
 	uint32_t alloclen, phys_ofs;
 	int ret;
 
-	if (1 /* alternative branch needs testing */ || 
+	if (1 /* alternative branch needs testing */ ||
 	    !jffs2_can_mark_obsolete(c)) {
 		/* We can't mark stuff obsolete on the medium. We need to write a deletion dirent */
 
@@ -575,7 +556,8 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 		if (!rd)
 			return -ENOMEM;
 
-		ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, ALLOC_DELETION);
+		ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
+					ALLOC_DELETION, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 		if (ret) {
 			jffs2_free_raw_dirent(rd);
 			return ret;
@@ -588,18 +570,18 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 		rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
 		rd->totlen = cpu_to_je32(sizeof(*rd) + namelen);
 		rd->hdr_crc = cpu_to_je32(crc32(0, rd, sizeof(struct jffs2_unknown_node)-4));
-		
+
 		rd->pino = cpu_to_je32(dir_f->inocache->ino);
 		rd->version = cpu_to_je32(++dir_f->highest_version);
 		rd->ino = cpu_to_je32(0);
-		rd->mctime = cpu_to_je32(get_seconds());
+		rd->mctime = cpu_to_je32(time);
 		rd->nsize = namelen;
 		rd->type = DT_UNKNOWN;
 		rd->node_crc = cpu_to_je32(crc32(0, rd, sizeof(*rd)-8));
 		rd->name_crc = cpu_to_je32(crc32(0, name, namelen));
 
 		fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_DELETION);
-		
+
 		jffs2_free_raw_dirent(rd);
 
 		if (IS_ERR(fd)) {
@@ -618,7 +600,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 		down(&dir_f->sem);
 
 		while ((*prev) && (*prev)->nhash <= nhash) {
-			if ((*prev)->nhash == nhash && 
+			if ((*prev)->nhash == nhash &&
 			    !memcmp((*prev)->name, name, namelen) &&
 			    !(*prev)->name[namelen]) {
 				struct jffs2_full_dirent *this = *prev;
@@ -639,7 +621,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 	/* dead_f is NULL if this was a rename not a real unlink */
 	/* Also catch the !f->inocache case, where there was a dirent
 	   pointing to an inode which didn't exist. */
-	if (dead_f && dead_f->inocache) { 
+	if (dead_f && dead_f->inocache) {
 
 		down(&dead_f->sem);
 
@@ -647,9 +629,9 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 			while (dead_f->dents) {
 				/* There can be only deleted ones */
 				fd = dead_f->dents;
-				
+
 				dead_f->dents = fd->next;
-				
+
 				if (fd->ino) {
 					printk(KERN_WARNING "Deleting inode #%u with active dentry \"%s\"->ino #%u\n",
 					       dead_f->inocache->ino, fd->name, fd->ino);
@@ -673,7 +655,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 }
 
 
-int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen)
+int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint32_t ino, uint8_t type, const char *name, int namelen, uint32_t time)
 {
 	struct jffs2_raw_dirent *rd;
 	struct jffs2_full_dirent *fd;
@@ -684,12 +666,13 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
 	if (!rd)
 		return -ENOMEM;
 
-	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen, ALLOC_NORMAL);
+	ret = jffs2_reserve_space(c, sizeof(*rd)+namelen, &phys_ofs, &alloclen,
+				ALLOC_NORMAL, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
 	if (ret) {
 		jffs2_free_raw_dirent(rd);
 		return ret;
 	}
-	
+
 	down(&dir_f->sem);
 
 	/* Build a deletion node */
@@ -701,7 +684,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
 	rd->pino = cpu_to_je32(dir_f->inocache->ino);
 	rd->version = cpu_to_je32(++dir_f->highest_version);
 	rd->ino = cpu_to_je32(ino);
-	rd->mctime = cpu_to_je32(get_seconds());
+	rd->mctime = cpu_to_je32(time);
 	rd->nsize = namelen;
 
 	rd->type = type;
@@ -710,7 +693,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
 	rd->name_crc = cpu_to_je32(crc32(0, name, namelen));
 
 	fd = jffs2_write_dirent(c, dir_f, rd, name, namelen, phys_ofs, ALLOC_NORMAL);
-	
+
 	jffs2_free_raw_dirent(rd);
 
 	if (IS_ERR(fd)) {