!1013 fix: 同步修复shell_lk.c告警清零带来的逻辑修改

Merge pull request !1013 from 夏不白/cherry-pick-1664185256

Makefile

@@ -82,6 +82,9 @@ endif
 ifeq ($(LOSCFG_STORAGE_SPINAND), y)
 FSTYPE = yaffs2
 endif
+ifeq ($(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7), y)
+FSTYPE = jffs2
+endif
 ROOTFS_DIR = $(OUT)/rootfs
 ROOTFS_ZIP = $(OUT)/rootfs.zip
 

drivers/mtd/multi_partition/BUILD.gn

@@ -39,6 +39,10 @@ kernel_module(module_name) {
 
   include_dirs = [ "$LITEOSTOPDIR/fs/jffs2/include" ]
 
+  if (defined(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7)) {
+    include_dirs += [ "//device/qemu/drivers/cfiflash" ]
+  }
+
   public_configs = [ ":public" ]
 }
 

drivers/mtd/multi_partition/Makefile

@@ -36,6 +36,10 @@ LOCAL_SRCS :=  $(wildcard src/*.c)
 LOCAL_INCLUDE := \
     -I $(LITEOSTOPDIR)/fs/jffs2/include
 
+ifeq ($(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7), y)
+LOCAL_INCLUDE += -I $(LITEOSTOPDIR)/../../device/qemu/drivers/cfiflash
+endif
+
 LOCAL_FLAGS := $(LOCAL_INCLUDE)
 
 include $(MODULE)

drivers/mtd/multi_partition/src/mtd_partition.c

@@ -39,6 +39,11 @@
 #include "fs/driver.h"
 #include "mtd/mtd_legacy_lite.h"
 
+#ifdef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
+#include "cfiflash.h"
+#endif
+
+
 #define DRIVER_NAME_ADD_SIZE    3
 pthread_mutex_t g_mtdPartitionLock = PTHREAD_MUTEX_INITIALIZER;
 
@@ -129,10 +134,17 @@ static VOID MtdNorParamAssign(partition_param *spinorParam, const struct MtdDev
      * you can change the SPIBLK_NAME or SPICHR_NAME to NULL.
      */
     spinorParam->flash_mtd = (struct MtdDev *)spinorMtd;
+#ifndef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
     spinorParam->flash_ops = GetDevSpinorOps();
     spinorParam->char_ops = GetMtdCharFops();
     spinorParam->blockname = SPIBLK_NAME;
     spinorParam->charname = SPICHR_NAME;
+#else
+    spinorParam->flash_ops = GetCfiBlkOps();
+    spinorParam->char_ops = NULL;
+    spinorParam->blockname = CFI_DRIVER;
+    spinorParam->charname = NULL;
+#endif
     spinorParam->partition_head = g_spinorPartitionHead;
     spinorParam->block_size = spinorMtd->eraseSize;
 }
@@ -146,7 +158,11 @@ static VOID MtdDeinitSpinorParam(VOID)
 
 static partition_param *MtdInitSpinorParam(partition_param *spinorParam)
 {
+#ifndef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
     struct MtdDev *spinorMtd = GetMtd("spinor");
+#else
+    struct MtdDev *spinorMtd = GetCfiMtdDev();
+#endif
     if (spinorMtd == NULL) {
         return NULL;
     }

fs/jffs2/jffs2.patch

@@ -2311,7 +2311,7 @@ diff -Nupr old/fs/jffs2/erase.c new/fs/jffs2/erase.c
 diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 --- old/fs/jffs2/file.c	2022-05-09 17:22:53.000000000 +0800
 +++ new/fs/jffs2/file.c	2022-05-10 09:43:14.250000000 +0800
-@@ -9,335 +9,30 @@
+@@ -9,325 +9,34 @@
   * For licensing information, see the file 'LICENCE' in this directory.
   *
   */
@@ -2336,35 +2336,32 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -			loff_t pos, unsigned len, unsigned flags,
 -			struct page **pagep, void **fsdata);
 -static int jffs2_readpage (struct file *filp, struct page *pg);
+-
+-int jffs2_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
+-{
+-	struct inode *inode = filp->f_mapping->host;
+-	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
+-	int ret;
+-
+-	ret = file_write_and_wait_range(filp, start, end);
+-	if (ret)
+-		return ret;
+ 
+-	inode_lock(inode);
+-	/* Trigger GC to flush any pending writes for this inode */
+-	jffs2_flush_wbuf_gc(c, inode->i_ino);
+-	inode_unlock(inode);
 +static unsigned char gc_buffer[PAGE_SIZE];	//avoids malloc when user may be under memory pressure
  
--int jffs2_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
+-	return 0;
+-}
+ 
+-const struct file_operations jffs2_file_operations =
 +unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
 +				   struct jffs2_inode_info *f,
 +				   unsigned long offset,
 +				   unsigned long *priv)
  {
--	struct inode *inode = filp->f_mapping->host;
--	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
-+	/* FIXME: This works only with one file system mounted at a time */
- 	int ret;
--
--	ret = file_write_and_wait_range(filp, start, end);
-+	ret = jffs2_read_inode_range(c, f, gc_buffer,
-+			 offset & ~(PAGE_SIZE-1), PAGE_SIZE);
- 	if (ret)
--		return ret;
--
--	inode_lock(inode);
--	/* Trigger GC to flush any pending writes for this inode */
--	jffs2_flush_wbuf_gc(c, inode->i_ino);
--	inode_unlock(inode);
--
--	return 0;
--}
--
--const struct file_operations jffs2_file_operations =
--{
 -	.llseek =	generic_file_llseek,
 -	.open =		generic_file_open,
 - 	.read_iter =	generic_file_read_iter,
@@ -2398,8 +2395,9 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
 -	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 -	unsigned char *pg_buf;
--	int ret;
--
++	/* FIXME: This works only with one file system mounted at a time */
+ 	int ret;
+ 
 -	jffs2_dbg(2, "%s(): ino #%lu, page at offset 0x%lx\n",
 -		  __func__, inode->i_ino, pg->index << PAGE_SHIFT);
 -
@@ -2438,15 +2436,18 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -{
 -	struct jffs2_inode_info *f = JFFS2_INODE_INFO(pg->mapping->host);
 -	int ret;
--
++	ret = jffs2_read_inode_range(c, f, gc_buffer,
++			 offset & ~(PAGE_SIZE-1), PAGE_SIZE);
++	if (ret)
++		return ERR_PTR(ret);
+ 
 -	mutex_lock(&f->sem);
 -	ret = jffs2_do_readpage_unlock(pg->mapping->host, pg);
 -	mutex_unlock(&f->sem);
 -	return ret;
-+		return ERR_PTR(ret);
 +	return gc_buffer;
  }
- 
+-
 -static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
 -			loff_t pos, unsigned len, unsigned flags,
 -			struct page **pagep, void **fsdata)
@@ -2457,15 +2458,20 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -	struct page *pg;
 -	struct inode *inode = mapping->host;
 -	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
--	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 -	pgoff_t index = pos >> PAGE_SHIFT;
 -	uint32_t pageofs = index << PAGE_SHIFT;
 -	int ret = 0;
 -
+-	pg = grab_cache_page_write_begin(mapping, index, flags);
+-	if (!pg)
+-		return -ENOMEM;
+-	*pagep = pg;
+-
 -	jffs2_dbg(1, "%s()\n", __func__);
 -
 -	if (pageofs > inode->i_size) {
 -		/* Make new hole frag from old EOF to new page */
+-		struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 -		struct jffs2_raw_inode ri;
 -		struct jffs2_full_dnode *fn;
 -		uint32_t alloc_len;
@@ -2476,7 +2482,7 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -		ret = jffs2_reserve_space(c, sizeof(ri), &alloc_len,
 -					  ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
 -		if (ret)
--			goto out_err;
+-			goto out_page;
 -
 -		mutex_lock(&f->sem);
 -		memset(&ri, 0, sizeof(ri));
@@ -2506,7 +2512,7 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -			ret = PTR_ERR(fn);
 -			jffs2_complete_reservation(c);
 -			mutex_unlock(&f->sem);
--			goto out_err;
+-			goto out_page;
 -		}
 -		ret = jffs2_add_full_dnode_to_inode(c, f, fn);
 -		if (f->metadata) {
@@ -2521,7 +2527,7 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -			jffs2_free_full_dnode(fn);
 -			jffs2_complete_reservation(c);
 -			mutex_unlock(&f->sem);
--			goto out_err;
+-			goto out_page;
 -		}
 -		jffs2_complete_reservation(c);
 -		inode->i_size = pageofs;
@@ -2529,19 +2535,6 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -	}
 -
 -	/*
--	 * While getting a page and reading data in, lock c->alloc_sem until
--	 * the page is Uptodate. Otherwise GC task may attempt to read the same
--	 * page in read_cache_page(), which causes a deadlock.
--	 */
--	mutex_lock(&c->alloc_sem);
--	pg = grab_cache_page_write_begin(mapping, index, flags);
--	if (!pg) {
--		ret = -ENOMEM;
--		goto release_sem;
--	}
--	*pagep = pg;
--
--	/*
 -	 * Read in the page if it wasn't already present. Cannot optimize away
 -	 * the whole page write case until jffs2_write_end can handle the
 -	 * case of a short-copy.
@@ -2550,20 +2543,19 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -		mutex_lock(&f->sem);
 -		ret = jffs2_do_readpage_nolock(inode, pg);
 -		mutex_unlock(&f->sem);
--		if (ret) {
--			unlock_page(pg);
--			put_page(pg);
--			goto release_sem;
--		}
+-		if (ret)
+-			goto out_page;
 -	}
 -	jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);
--
--release_sem:
--	mutex_unlock(&c->alloc_sem);
--out_err:
 -	return ret;
--}
 -
+-out_page:
+-	unlock_page(pg);
+-	put_page(pg);
+-	return ret;
++	/* Do nothing */
+ }
+ 
 -static int jffs2_write_end(struct file *filp, struct address_space *mapping,
 -			loff_t pos, unsigned len, unsigned copied,
 -			struct page *pg, void *fsdata)
@@ -2661,8 +2653,7 @@ diff -Nupr old/fs/jffs2/file.c new/fs/jffs2/file.c
 -	unlock_page(pg);
 -	put_page(pg);
 -	return writtenlen > 0 ? writtenlen : ret;
-+	/* Do nothing */
- }
+-}
 diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 --- old/fs/jffs2/fs.c	2022-05-09 17:22:53.000000000 +0800
 +++ new/fs/jffs2/fs.c	2022-05-10 16:13:37.830000000 +0800
@@ -2778,11 +2769,7 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  	ri->version = cpu_to_je32(++f->highest_version);
 +	ri->uid = cpu_to_je16(inode->i_uid);
 +	ri->gid = cpu_to_je16(inode->i_gid);
- 
--	ri->uid = cpu_to_je16((ivalid & ATTR_UID)?
--		from_kuid(&init_user_ns, iattr->ia_uid):i_uid_read(inode));
--	ri->gid = cpu_to_je16((ivalid & ATTR_GID)?
--		from_kgid(&init_user_ns, iattr->ia_gid):i_gid_read(inode));
++
 +	if (ivalid & CHG_UID) {
 +		if (((c_uid != inode->i_uid) || (attr->attr_chg_uid != inode->i_uid)) && (!IsCapPermit(CAP_CHOWN))) {
 +			jffs2_complete_reservation(c);
@@ -2804,7 +2791,16 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 +			ri->gid = cpu_to_je16(attr->attr_chg_gid);
 +		}
 +	}
-+
+ 
+-	ri->uid = cpu_to_je16((ivalid & ATTR_UID)?
+-		from_kuid(&init_user_ns, iattr->ia_uid):i_uid_read(inode));
+-	ri->gid = cpu_to_je16((ivalid & ATTR_GID)?
+-		from_kgid(&init_user_ns, iattr->ia_gid):i_gid_read(inode));
+-
+-	if (ivalid & ATTR_MODE)
+-		ri->mode = cpu_to_jemode(iattr->ia_mode);
+-	else
+-		ri->mode = cpu_to_jemode(inode->i_mode);
 +	if (ivalid & CHG_MODE) {
 +		if (!IsCapPermit(CAP_FOWNER) && (c_uid != inode->i_uid)) {
 +			jffs2_complete_reservation(c);
@@ -2818,10 +2814,6 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 +		}
 +	}
  
--	if (ivalid & ATTR_MODE)
--		ri->mode = cpu_to_jemode(iattr->ia_mode);
--	else
--		ri->mode = cpu_to_jemode(inode->i_mode);
 +	if (ivalid & CHG_ATIME) {
 +		if ((c_uid != inode->i_uid) || (attr->attr_chg_uid != inode->i_uid)) {
 +			return -EPERM;
@@ -2831,7 +2823,7 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 +	} else {
 +		ri->atime = cpu_to_je32(inode->i_atime);
 +	}
- 
++
 +	if (ivalid & CHG_MTIME) {
 +		if ((c_uid != inode->i_uid) || (attr->attr_chg_uid != inode->i_uid)) {
 +			return -EPERM;
@@ -2883,7 +2875,7 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  	if (IS_ERR(new_metadata)) {
  		jffs2_complete_reservation(c);
  		jffs2_free_raw_inode(ri);
-@@ -147,23 +140,20 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
+@@ -147,23 +140,20 @@ int jffs2_do_setattr (struct inode *inod
  		return PTR_ERR(new_metadata);
  	}
  	/* It worked. Update the inode */
@@ -2916,7 +2908,7 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  		f->metadata = NULL;
  	} else {
  		f->metadata = new_metadata;
-@@ -182,315 +172,201 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
+@@ -182,315 +172,201 @@ int jffs2_do_setattr (struct inode *inod
  	   We are protected from a simultaneous write() extending i_size
  	   back past iattr->ia_size, because do_truncate() holds the
  	   generic inode semaphore. */
@@ -2935,43 +2927,31 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  {
 -	struct inode *inode = d_inode(dentry);
 -	int rc;
+-
+-	rc = setattr_prepare(dentry, iattr);
+-	if (rc)
+-		return rc;
+-
+-	rc = jffs2_do_setattr(inode, iattr);
+-	if (!rc && (iattr->ia_valid & ATTR_MODE))
+-		rc = posix_acl_chmod(inode, inode->i_mode);
 +	/* We can forget about this inode for now - drop all
 +	 *  the nodelists associated with it, etc.
 +	 */
 +	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 +	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
-+
-+	jffs2_do_clear_inode(c, f);
-+}
- 
--	rc = setattr_prepare(dentry, iattr);
--	if (rc)
--		return rc;
-+static struct jffs2_inode *ilookup(struct super_block *sb, uint32_t ino)
-+{
-+	struct jffs2_inode *node = NULL;
- 
--	rc = jffs2_do_setattr(inode, iattr);
--	if (!rc && (iattr->ia_valid & ATTR_MODE))
--		rc = posix_acl_chmod(inode, inode->i_mode);
-+	if (sb->s_root == NULL) {
-+		return NULL;
-+	}
  
 -	return rc;
-+	// Check for this inode in the cache
-+	Jffs2NodeLock();
-+	(void)Jffs2HashGet(&sb->s_node_hash_lock, &sb->s_node_hash[0], sb, ino, &node);
-+	Jffs2NodeUnlock();
-+	return node;
++	jffs2_do_clear_inode(c, f);
  }
  
 -int jffs2_statfs(struct dentry *dentry, struct kstatfs *buf)
-+struct jffs2_inode *new_inode(struct super_block *sb)
++static struct jffs2_inode *ilookup(struct super_block *sb, uint32_t ino)
  {
 -	struct jffs2_sb_info *c = JFFS2_SB_INFO(dentry->d_sb);
 -	unsigned long avail;
--
++	struct jffs2_inode *node = NULL;
+ 
 -	buf->f_type = JFFS2_SUPER_MAGIC;
 -	buf->f_bsize = 1 << PAGE_SHIFT;
 -	buf->f_blocks = c->flash_size >> PAGE_SHIFT;
@@ -2990,35 +2970,47 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 -	spin_unlock(&c->erase_completion_lock);
 -
 -	buf->f_bavail = buf->f_bfree = avail >> PAGE_SHIFT;
-+	struct jffs2_inode *inode = NULL;
++	if (sb->s_root == NULL) {
++		return NULL;
++	}
  
 -	return 0;
--}
-+	inode = zalloc(sizeof (struct jffs2_inode));
-+	if (inode == NULL)
-+		return 0;
- 
-+	D2(PRINTK("malloc new_inode %x ####################################\n",
-+		inode));
++	// Check for this inode in the cache
++	Jffs2NodeLock();
++	(void)Jffs2HashGet(&sb->s_node_hash_lock, &sb->s_node_hash[0], sb, ino, &node);
++	Jffs2NodeUnlock();
++	return node;
+ }
  
+-
 -void jffs2_evict_inode (struct inode *inode)
--{
++struct jffs2_inode *new_inode(struct super_block *sb)
+ {
 -	/* We can forget about this inode for now - drop all
 -	 *  the nodelists associated with it, etc.
 -	 */
 -	struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
 -	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
-+	inode->i_sb = sb;
-+	inode->i_ino = 1;
-+	inode->i_nlink = 1;    // Let JFFS2 manage the link count
-+	inode->i_size = 0;
-+	LOS_ListInit((&(inode->i_hashlist)));
++	struct jffs2_inode *inode = NULL;
  
 -	jffs2_dbg(1, "%s(): ino #%lu mode %o\n",
 -		  __func__, inode->i_ino, inode->i_mode);
 -	truncate_inode_pages_final(&inode->i_data);
 -	clear_inode(inode);
 -	jffs2_do_clear_inode(c, f);
++	inode = zalloc(sizeof (struct jffs2_inode));
++	if (inode == NULL)
++		return 0;
++
++	D2(PRINTK("malloc new_inode %x ####################################\n",
++		inode));
++
++	inode->i_sb = sb;
++	inode->i_ino = 1;
++	inode->i_nlink = 1;    // Let JFFS2 manage the link count
++	inode->i_size = 0;
++	LOS_ListInit((&(inode->i_hashlist)));
++
 +	return inode;
  }
  
@@ -3083,16 +3075,16 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 -	inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime));
 -
 -	set_nlink(inode, f->inocache->pino_nlink);
--
--	inode->i_blocks = (inode->i_size + 511) >> 9;
 +	inode->i_atime = je32_to_cpu(latest_node.atime);
 +	inode->i_mtime = je32_to_cpu(latest_node.mtime);
 +	inode->i_ctime = je32_to_cpu(latest_node.ctime);
 +	inode->i_nlink = f->inocache->pino_nlink;
  
--	switch (inode->i_mode & S_IFMT) {
+-	inode->i_blocks = (inode->i_size + 511) >> 9;
 +	(void)mutex_unlock(&f->sem);
  
+-	switch (inode->i_mode & S_IFMT) {
+-
 -	case S_IFLNK:
 -		inode->i_op = &jffs2_symlink_inode_operations;
 -		inode->i_link = f->target;
@@ -3162,21 +3154,20 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  	jffs2_dbg(1, "jffs2_read_inode() returning\n");
 -	unlock_new_inode(inode);
 -	return inode;
-+	Jffs2NodeUnlock();
- 
+-
 -error_io:
 -	ret = -EIO;
 -error:
 -	mutex_unlock(&f->sem);
 -	iget_failed(inode);
 -	return ERR_PTR(ret);
-+	return inode;
- }
+-}
++	Jffs2NodeUnlock();
  
 -void jffs2_dirty_inode(struct inode *inode, int flags)
 -{
 -	struct iattr iattr;
- 
+-
 -	if (!(inode->i_state & I_DIRTY_DATASYNC)) {
 -		jffs2_dbg(2, "%s(): not calling setattr() for ino #%lu\n",
 -			  __func__, inode->i_ino);
@@ -3195,19 +3186,16 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 -	iattr.ia_ctime = inode->i_ctime;
 -
 -	jffs2_do_setattr(inode, &iattr);
--}
-+// -------------------------------------------------------------------------
-+// Decrement the reference count on an inode. If this makes the ref count
-+// zero, then this inode can be freed.
++	return inode;
+ }
  
 -int jffs2_do_remount_fs(struct super_block *sb, struct fs_context *fc)
-+int jffs2_iput(struct jffs2_inode *i)
- {
+-{
 -	struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
 -
 -	if (c->flags & JFFS2_SB_FLAG_RO && !sb_rdonly(sb))
 -		return -EROFS;
--
+ 
 -	/* We stop if it was running, then restart if it needs to.
 -	   This also catches the case where it was stopped and this
 -	   is just a remount to restart it.
@@ -3218,9 +3206,12 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 -		jffs2_flush_wbuf_pad(c);
 -		mutex_unlock(&c->alloc_sem);
 -	}
--
--	if (!(fc->sb_flags & SB_RDONLY))
--		jffs2_start_garbage_collect_thread(c);
++// -------------------------------------------------------------------------
++// Decrement the reference count on an inode. If this makes the ref count
++// zero, then this inode can be freed.
++
++int jffs2_iput(struct jffs2_inode *i)
++{
 +	// Called in jffs2_find
 +	// (and jffs2_open and jffs2_ops_mkdir?)
 +	// super.c jffs2_fill_super,
@@ -3242,6 +3233,9 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 +	free(i);
 +	Jffs2NodeUnlock();
  
+-	if (!(fc->sb_flags & SB_RDONLY))
+-		jffs2_start_garbage_collect_thread(c);
+-
 -	fc->sb_flags |= SB_NOATIME;
  	return 0;
  }
@@ -3348,7 +3342,7 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  {
  	/*
  	 * Pick a inocache hash size based on the size of the medium.
-@@ -510,117 +386,17 @@ static int calculate_inocache_hashsize(uint32_t flash_size)
+@@ -510,117 +386,17 @@ static int calculate_inocache_hashsize(u
  	return hashsize;
  }
  
@@ -3444,8 +3438,8 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 -	jffs2_free_ino_caches(c);
 -	jffs2_free_raw_node_refs(c);
 -	kvfree(c->blocks);
--	jffs2_clear_xattr_subsystem(c);
 - out_inohash:
+-	jffs2_clear_xattr_subsystem(c);
 -	kfree(c->inocache_list);
 - out_wbuf:
 -	jffs2_flash_cleanup(c);
@@ -3454,7 +3448,8 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
 -}
 -
  void jffs2_gc_release_inode(struct jffs2_sb_info *c,
- 				   struct jffs2_inode_info *f)
+-				   struct jffs2_inode_info *f)
++		   	    struct jffs2_inode_info *f)
  {
 -	iput(OFNI_EDONI_2SFFJ(f));
 +	struct jffs2_inode *node = OFNI_EDONI_2SFFJ(f);
@@ -3469,7 +3464,7 @@ diff -Nupr old/fs/jffs2/fs.c new/fs/jffs2/fs.c
  	struct jffs2_inode_cache *ic;
  
  	if (unlinked) {
-@@ -668,72 +444,9 @@ struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
+@@ -668,72 +444,9 @@ struct jffs2_inode_info *jffs2_gc_fetch_
  		   Just iget() it, and if read_inode() is necessary that's OK.
  		*/
  		inode = jffs2_iget(OFNI_BS_2SFFJ(c), inum);
@@ -5561,7 +5556,7 @@ diff -Nupr old/fs/jffs2/scan.c new/fs/jffs2/scan.c
  
  #define DEFAULT_EMPTY_SCAN_SIZE 256
  
-@@ -74,7 +73,7 @@ static int file_dirty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
+@@ -74,7 +73,7 @@ static int file_dirty(struct jffs2_sb_in
  		return ret;
  	if ((ret = jffs2_scan_dirty_space(c, jeb, jeb->free_size)))
  		return ret;
@@ -5570,13 +5565,15 @@ diff -Nupr old/fs/jffs2/scan.c new/fs/jffs2/scan.c
  	   think it's recoverable now. */
  	jeb->dirty_size += jeb->wasted_size;
  	c->dirty_size += jeb->wasted_size;
-@@ -95,40 +94,26 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
+@@ -95,40 +94,26 @@ int jffs2_scan_medium(struct jffs2_sb_in
  	unsigned char *flashbuf = NULL;
  	uint32_t buf_size = 0;
  	struct jffs2_summary *s = NULL; /* summary info collected by the scan process */
 -#ifndef __ECOS
 -	size_t pointlen, try_size;
--
++	struct super_block *sb = NULL;
++	struct MtdNorDev *device = NULL;
+ 
 -	ret = mtd_point(c->mtd, 0, c->mtd->size, &pointlen,
 -			(void **)&flashbuf, NULL);
 -	if (!ret && pointlen < c->mtd->size) {
@@ -5589,9 +5586,6 @@ diff -Nupr old/fs/jffs2/scan.c new/fs/jffs2/scan.c
 -	if (ret && ret != -EOPNOTSUPP)
 -		jffs2_dbg(1, "MTD point failed %d\n", ret);
 -#endif
-+	struct super_block *sb = NULL;
-+	struct MtdNorDev *device = NULL;
-+
  	if (!flashbuf) {
  		/* For NAND it's quicker to read a whole eraseblock at a time,
  		   apparently */
@@ -5619,7 +5613,7 @@ diff -Nupr old/fs/jffs2/scan.c new/fs/jffs2/scan.c
  	}
  
  	if (jffs2_sum_active()) {
-@@ -140,7 +125,9 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
+@@ -140,7 +125,9 @@ int jffs2_scan_medium(struct jffs2_sb_in
  		}
  	}
  
@@ -5630,7 +5624,7 @@ diff -Nupr old/fs/jffs2/scan.c new/fs/jffs2/scan.c
  		struct jffs2_eraseblock *jeb = &c->blocks[i];
  
  		cond_resched();
-@@ -269,14 +256,10 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
+@@ -269,19 +256,12 @@ int jffs2_scan_medium(struct jffs2_sb_in
  			ret = -EIO;
  			goto out;
  		}
@@ -5640,254 +5634,20 @@ diff -Nupr old/fs/jffs2/scan.c new/fs/jffs2/scan.c
  	}
  	ret = 0;
   out:
--	jffs2_sum_reset_collected(s);
--	kfree(s);
-+	kfree(flashbuf);
-  out_buf:
- 	if (buf_size)
- 		kfree(flashbuf);
-@@ -413,7 +396,7 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock
- 	if (!ref)
- 		return -ENOMEM;
- 
--	/* BEFORE jffs2_build_xattr_subsystem() called, 
-+	/* BEFORE jffs2_build_xattr_subsystem() called,
- 	 * and AFTER xattr_ref is marked as a dead xref,
- 	 * ref->xid is used to store 32bit xid, xd is not used
- 	 * ref->ino is used to store 32bit inode-number, ic is not used
-@@ -486,10 +469,10 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 		struct jffs2_sum_marker *sm;
- 		void *sumptr = NULL;
- 		uint32_t sumlen;
--	      
-+
- 		if (!buf_size) {
- 			/* XIP case. Just look, point at the summary if it's there */
--			sm = (void *)buf + c->sector_size - sizeof(*sm);
-+			sm = (struct jffs2_sum_marker *)((uint8_t *)buf + c->sector_size - sizeof(*sm));
- 			if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
- 				sumptr = buf + je32_to_cpu(sm->offset);
- 				sumlen = c->sector_size - je32_to_cpu(sm->offset);
-@@ -502,13 +485,13 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 				buf_len = sizeof(*sm);
- 
- 			/* Read as much as we want into the _end_ of the preallocated buffer */
--			err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len, 
-+			err = jffs2_fill_scan_buf(c, buf + buf_size - buf_len,
- 						  jeb->offset + c->sector_size - buf_len,
--						  buf_len);				
-+						  buf_len);
- 			if (err)
- 				return err;
- 
--			sm = (void *)buf + buf_size - sizeof(*sm);
-+			sm = (struct jffs2_sum_marker *)((uint8_t *)buf + buf_size - sizeof(*sm));
- 			if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
- 				sumlen = c->sector_size - je32_to_cpu(sm->offset);
- 				sumptr = buf + buf_size - sumlen;
-@@ -523,18 +506,15 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 					sumptr = kmalloc(sumlen, GFP_KERNEL);
- 					if (!sumptr)
- 						return -ENOMEM;
--					memcpy(sumptr + sumlen - buf_len, buf + buf_size - buf_len, buf_len);
-+					memcpy((uint8_t *)sumptr + sumlen - buf_len, buf + buf_size - buf_len, buf_len);
- 				}
- 				if (buf_len < sumlen) {
- 					/* Need to read more so that the entire summary node is present */
--					err = jffs2_fill_scan_buf(c, sumptr, 
-+					err = jffs2_fill_scan_buf(c, sumptr,
- 								  jeb->offset + c->sector_size - sumlen,
--								  sumlen - buf_len);				
--					if (err) {
--						if (sumlen > buf_size)
--							kfree(sumptr);
-+								  sumlen - buf_len);
-+					if (err)
- 						return err;
--					}
- 				}
- 			}
- 
-@@ -545,7 +525,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 
- 			if (buf_size && sumlen > buf_size)
- 				kfree(sumptr);
--			/* If it returns with a real error, bail. 
-+			/* If it returns with a real error, bail.
- 			   If it returns positive, that's a block classification
- 			   (i.e. BLK_STATE_xxx) so return that too.
- 			   If it returns zero, fall through to full scan. */
-@@ -607,7 +587,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 	/* Now ofs is a complete physical flash offset as it always was... */
- 	ofs += jeb->offset;
- 
--	noise = 10;
-+	noise = 1;
- 
- 	dbg_summary("no summary found in jeb 0x%08x. Apply original scan.\n",jeb->offset);
- 
-@@ -700,7 +680,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 				scan_end = buf_len;
- 				goto more_empty;
- 			}
--			
-+
- 			/* See how much more there is to read in this eraseblock... */
- 			buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
- 			if (!buf_len) {
-@@ -950,7 +930,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
- 	jffs2_dbg(1, "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
- 		  jeb->offset, jeb->free_size, jeb->dirty_size,
- 		  jeb->unchecked_size, jeb->used_size, jeb->wasted_size);
--	
-+
- 	/* mark_node_obsolete can add to wasted !! */
- 	if (jeb->wasted_size) {
- 		jeb->dirty_size += jeb->wasted_size;
-@@ -978,7 +958,6 @@ struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uin
- 		pr_notice("%s(): allocation of inode cache failed\n", __func__);
- 		return NULL;
- 	}
--	memset(ic, 0, sizeof(*ic));
- 
- 	ic->ino = ino;
- 	ic->nodes = (void *)ic;
-@@ -1069,7 +1048,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
- 	pseudo_random += je32_to_cpu(rd->version);
- 
- 	/* Should never happen. Did. (OLPC trac #4184)*/
--	checkedlen = strnlen(rd->name, rd->nsize);
-+	checkedlen = strnlen((const char *)rd->name, rd->nsize);
- 	if (checkedlen < rd->nsize) {
- 		pr_err("Dirent at %08x has zeroes in name. Truncating to %d chars\n",
- 		       ofs, checkedlen);
-@@ -1081,7 +1060,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
- 	memcpy(&fd->name, rd->name, checkedlen);
- 	fd->name[checkedlen] = 0;
- 
--	crc = crc32(0, fd->name, checkedlen);
-+	crc = crc32(0, fd->name, rd->nsize);
- 	if (crc != je32_to_cpu(rd->name_crc)) {
- 		pr_notice("%s(): Name CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
- 			  __func__, ofs, je32_to_cpu(rd->name_crc), crc);
-@@ -1106,7 +1085,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
- 	fd->next = NULL;
- 	fd->version = je32_to_cpu(rd->version);
- 	fd->ino = je32_to_cpu(rd->ino);
--	fd->nhash = full_name_hash(NULL, fd->name, checkedlen);
-+	fd->nhash = full_name_hash(fd->name, checkedlen);
- 	fd->type = rd->type;
- 	jffs2_add_fd_to_list(c, fd, &ic->scan_dents);
- 
-diff
-@@ -9,18 +9,17 @@
-  *
-  */
- 
--#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
--
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/slab.h>
--#include <linux/mtd/mtd.h>
- #include <linux/pagemap.h>
--#include <linux/crc32.h>
- #include <linux/compiler.h>
- #include "nodelist.h"
- #include "summary.h"
- #include "debug.h"
-+#include "mtd_dev.h"
-+#include "los_typedef.h"
-+#include "los_crc32.h"
- 
- #define DEFAULT_EMPTY_SCAN_SIZE 256
- 
-@@ -74,7 +73,7 @@ static int file_dirty(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
- 		return ret;
- 	if ((ret = jffs2_scan_dirty_space(c, jeb, jeb->free_size)))
- 		return ret;
--	/* Turned wasted size into dirty, since we apparently 
-+	/* Turned wasted size into dirty, since we apparently
- 	   think it's recoverable now. */
- 	jeb->dirty_size += jeb->wasted_size;
- 	c->dirty_size += jeb->wasted_size;
-@@ -95,40 +94,26 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
- 	unsigned char *flashbuf = NULL;
- 	uint32_t buf_size = 0;
- 	struct jffs2_summary *s = NULL; /* summary info collected by the scan process */
+-	if (buf_size)
+-		kfree(flashbuf);
 -#ifndef __ECOS
--	size_t pointlen, try_size;
--
--	ret = mtd_point(c->mtd, 0, c->mtd->size, &pointlen,
--			(void **)&flashbuf, NULL);
--	if (!ret && pointlen < c->mtd->size) {
--		/* Don't muck about if it won't let us point to the whole flash */
--		jffs2_dbg(1, "MTD point returned len too short: 0x%zx\n",
--			  pointlen);
--		mtd_unpoint(c->mtd, 0, pointlen);
--		flashbuf = NULL;
--	}
--	if (ret && ret != -EOPNOTSUPP)
--		jffs2_dbg(1, "MTD point failed %d\n", ret);
+-	else
+-		mtd_unpoint(c->mtd, 0, c->mtd->size);
 -#endif
-+	struct super_block *sb = NULL;
-+	struct MtdNorDev *device = NULL;
-+
- 	if (!flashbuf) {
- 		/* For NAND it's quicker to read a whole eraseblock at a time,
- 		   apparently */
- 		if (jffs2_cleanmarker_oob(c))
--			try_size = c->sector_size;
-+			buf_size = c->sector_size;
- 		else
--			try_size = PAGE_SIZE;
-+			buf_size = PAGE_SIZE;
- 
- 		jffs2_dbg(1, "Trying to allocate readbuf of %zu "
--			  "bytes\n", try_size);
-+			  "bytes\n", buf_size);
- 
--		flashbuf = mtd_kmalloc_up_to(c->mtd, &try_size);
-+		flashbuf = kmalloc(buf_size, GFP_KERNEL);
- 		if (!flashbuf)
- 			return -ENOMEM;
- 
- 		jffs2_dbg(1, "Allocated readbuf of %zu bytes\n",
--			  try_size);
--
--		buf_size = (uint32_t)try_size;
-+			  buf_size);
- 	}
- 
- 	if (jffs2_sum_active()) {
-@@ -140,7 +125,9 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
- 		}
- 	}
- 
--	for (i=0; i<c->nr_blocks; i++) {
-+	sb = OFNI_BS_2SFFJ(c);
-+	device = (struct MtdNorDev*)(sb->s_dev);
-+	for (i=device->blockStart; i<c->nr_blocks + device->blockStart; i++) {
- 		struct jffs2_eraseblock *jeb = &c->blocks[i];
- 
- 		cond_resched();
-@@ -269,14 +256,10 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
- 			ret = -EIO;
- 			goto out;
- 		}
--		spin_lock(&c->erase_completion_lock);
--		jffs2_garbage_collect_trigger(c);
--		spin_unlock(&c->erase_completion_lock);
- 	}
- 	ret = 0;
-  out:
--	jffs2_sum_reset_collected(s);
 -	kfree(s);
++
 +	kfree(flashbuf);
-  out_buf:
- 	if (buf_size)
- 		kfree(flashbuf);
-@@ -413,7 +396,7 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock
++
+ 	return ret;
+ }
+ 
+@@ -411,7 +391,7 @@ static int jffs2_scan_xref_node(struct j
  	if (!ref)
  		return -ENOMEM;
  
@@ -5896,7 +5656,7 @@ diff
  	 * and AFTER xattr_ref is marked as a dead xref,
  	 * ref->xid is used to store 32bit xid, xd is not used
  	 * ref->ino is used to store 32bit inode-number, ic is not used
-@@ -486,10 +469,10 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -484,10 +464,10 @@ static int jffs2_scan_eraseblock (struct
  		struct jffs2_sum_marker *sm;
  		void *sumptr = NULL;
  		uint32_t sumlen;
@@ -5909,7 +5669,7 @@ diff
  			if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
  				sumptr = buf + je32_to_cpu(sm->offset);
  				sumlen = c->sector_size - je32_to_cpu(sm->offset);
-@@ -502,13 +485,13 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -500,13 +480,13 @@ static int jffs2_scan_eraseblock (struct
  				buf_len = sizeof(*sm);
  
  			/* Read as much as we want into the _end_ of the preallocated buffer */
@@ -5926,7 +5686,7 @@ diff
  			if (je32_to_cpu(sm->magic) == JFFS2_SUM_MAGIC) {
  				sumlen = c->sector_size - je32_to_cpu(sm->offset);
  				sumptr = buf + buf_size - sumlen;
-@@ -523,18 +506,15 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -521,18 +501,15 @@ static int jffs2_scan_eraseblock (struct
  					sumptr = kmalloc(sumlen, GFP_KERNEL);
  					if (!sumptr)
  						return -ENOMEM;
@@ -5949,7 +5709,7 @@ diff
  				}
  			}
  
-@@ -545,7 +525,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -543,7 +520,7 @@ static int jffs2_scan_eraseblock (struct
  
  			if (buf_size && sumlen > buf_size)
  				kfree(sumptr);
@@ -5958,7 +5718,7 @@ diff
  			   If it returns positive, that's a block classification
  			   (i.e. BLK_STATE_xxx) so return that too.
  			   If it returns zero, fall through to full scan. */
-@@ -607,7 +587,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -605,7 +582,7 @@ full_scan:
  	/* Now ofs is a complete physical flash offset as it always was... */
  	ofs += jeb->offset;
  
@@ -5967,7 +5727,7 @@ diff
  
  	dbg_summary("no summary found in jeb 0x%08x. Apply original scan.\n",jeb->offset);
  
-@@ -700,7 +680,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -698,7 +675,7 @@ scan_more:
  				scan_end = buf_len;
  				goto more_empty;
  			}
@@ -5976,7 +5736,7 @@ diff
  			/* See how much more there is to read in this eraseblock... */
  			buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
  			if (!buf_len) {
-@@ -950,7 +930,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -948,7 +925,7 @@ scan_more:
  	jffs2_dbg(1, "Block at 0x%08x: free 0x%08x, dirty 0x%08x, unchecked 0x%08x, used 0x%08x, wasted 0x%08x\n",
  		  jeb->offset, jeb->free_size, jeb->dirty_size,
  		  jeb->unchecked_size, jeb->used_size, jeb->wasted_size);
@@ -5985,7 +5745,7 @@ diff
  	/* mark_node_obsolete can add to wasted !! */
  	if (jeb->wasted_size) {
  		jeb->dirty_size += jeb->wasted_size;
-@@ -978,7 +958,6 @@ struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uin
+@@ -976,7 +953,6 @@ struct jffs2_inode_cache *jffs2_scan_mak
  		pr_notice("%s(): allocation of inode cache failed\n", __func__);
  		return NULL;
  	}
@@ -5993,7 +5753,7 @@ diff
  
  	ic->ino = ino;
  	ic->nodes = (void *)ic;
-@@ -1069,7 +1048,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -1067,7 +1043,7 @@ static int jffs2_scan_dirent_node(struct
  	pseudo_random += je32_to_cpu(rd->version);
  
  	/* Should never happen. Did. (OLPC trac #4184)*/
@@ -6002,7 +5762,7 @@ diff
  	if (checkedlen < rd->nsize) {
  		pr_err("Dirent at %08x has zeroes in name. Truncating to %d chars\n",
  		       ofs, checkedlen);
-@@ -1081,7 +1060,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -1079,7 +1055,7 @@ static int jffs2_scan_dirent_node(struct
  	memcpy(&fd->name, rd->name, checkedlen);
  	fd->name[checkedlen] = 0;
  
@@ -6011,7 +5771,7 @@ diff
  	if (crc != je32_to_cpu(rd->name_crc)) {
  		pr_notice("%s(): Name CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
  			  __func__, ofs, je32_to_cpu(rd->name_crc), crc);
-@@ -1106,7 +1085,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
+@@ -1104,7 +1080,7 @@ static int jffs2_scan_dirent_node(struct
  	fd->next = NULL;
  	fd->version = je32_to_cpu(rd->version);
  	fd->ino = je32_to_cpu(rd->ino);

fs/jffs2/src/vfs_jffs2.c

@@ -780,6 +780,7 @@ ssize_t VfsJffs2Readlink(struct Vnode *vnode, char *buffer, size_t bufLen)
 
     cnt = (bufLen - 1) < targetLen ? (bufLen - 1) : targetLen;
     if (LOS_CopyFromKernel(buffer, bufLen, (const char *)f->target, cnt) != 0) {
+        cnt = 0;
         LOS_MuxUnlock(&g_jffs2FsLock);
         return -EFAULT;
     }

fs/rootfs/Makefile

@@ -33,6 +33,10 @@ MODULE_NAME := rootfs
 
 LOCAL_SRCS := $(wildcard los_rootfs.c los_bootargs.c)
 
+ifeq ($(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7), y)
+LOCAL_INCLUDE += -I $(LITEOSTOPDIR)/../../device/qemu/drivers/cfiflash
+endif
+
 LOCAL_FLAGS := $(LOCAL_INCLUDE)
 
 include $(MODULE)

fs/rootfs/los_bootargs.c

@@ -32,10 +32,14 @@
 #include "los_base.h"
 #include "string.h"
 
-#if defined(LOSCFG_STORAGE_SPINOR) || defined(LOSCFG_STORAGE_SPINAND)
+#if defined(LOSCFG_STORAGE_SPINOR) || defined(LOSCFG_STORAGE_SPINAND) || defined(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7)
 #include "mtd_list.h"
 #endif
 
+#ifdef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
+#include "cfiflash.h"
+#endif
+
 #ifdef LOSCFG_STORAGE_EMMC
 #include "disk.h"
 #endif
@@ -94,6 +98,19 @@ INT32 LOS_GetCmdLine(VOID)
     }
 #endif
 
+#ifdef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
+    struct MtdDev *mtd = GetCfiMtdDev();
+    if (mtd == NULL) {
+        PRINT_ERR("Get CFI mtd failed!\n");
+        goto ERROUT;
+    }
+    g_alignSize = mtd->eraseSize;
+    ret = mtd->read(mtd, CFIFLASH_BOOTARGS_ADDR, COMMAND_LINE_SIZE, g_cmdLine);
+    if (ret == COMMAND_LINE_SIZE) {
+        return LOS_OK;
+    }
+#endif
+
     PRINT_ERR("Read cmdline error!\n");
 ERROUT:
     free(g_cmdLine);

fs/rootfs/los_rootfs.c

@@ -37,11 +37,15 @@
 #include "sys/stat.h"
 #include "sys/types.h"
 
-#if defined(LOSCFG_STORAGE_SPINOR) || defined(LOSCFG_STORAGE_SPINAND)
+#if defined(LOSCFG_STORAGE_SPINOR) || defined(LOSCFG_STORAGE_SPINAND) || defined(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7)
 #include "mtd_list.h"
 #include "mtd_partition.h"
 #endif
 
+#ifdef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
+#include "cfiflash.h"
+#endif
+
 #ifdef LOSCFG_STORAGE_EMMC
 #include "disk.h"
 #include "ff.h"
@@ -124,7 +128,14 @@ STATIC INT32 AddEmmcParts(INT32 rootAddr, INT32 rootSize, INT32 userAddr, INT32
 
 STATIC INT32 AddPartitions(CHAR *dev, UINT64 rootAddr, UINT64 rootSize, UINT64 userAddr, UINT64 userSize)
 {
-#if defined(LOSCFG_STORAGE_SPINOR) || defined(LOSCFG_STORAGE_SPINAND)
+#ifdef LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7
+    if ((strcmp(dev, "cfi-flash") == 0) && (rootAddr != CFIFLASH_ROOT_ADDR)) {
+        PRINT_ERR("Error rootAddr, must be %#0x!\n", CFIFLASH_ROOT_ADDR);
+        return LOS_NOK;
+    }
+#endif
+
+#if defined(LOSCFG_STORAGE_SPINOR) || defined(LOSCFG_STORAGE_SPINAND) || defined(LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7)
     INT32 ret;
     INT32 blk0 = 0;
     INT32 blk2 = 2;

fs/rootfs/los_rootfs.h

@@ -59,6 +59,12 @@
 #define ROOTFS_ADDR             0x600000
 #define ROOTFS_SIZE             0x800000
 #define USERFS_SIZE             0x80000
+#elif defined (LOSCFG_PLATFORM_QEMU_ARM_VIRT_CA7)
+#define ROOT_DEV_NAME           "/dev/cfiflash0"
+#define USER_DEV_NAME           "/dev/cfiflash2"
+#define ROOTFS_ADDR             CFIFLASH_ROOT_ADDR
+#define ROOTFS_SIZE             0x1B00000
+#define USERFS_SIZE             (CFIFLASH_CAPACITY - ROOTFS_ADDR - ROOTFS_SIZE)
 #elif defined (LOSCFG_STORAGE_EMMC)
 #define ROOT_DEV_NAME           "/dev/mmcblk0p0"
 #ifdef LOSCFG_PLATFORM_PATCHFS

fs/vfs/operation/vfs_force_umount.c

@@ -353,7 +353,7 @@ static struct file_operations_vfs g_errorFileOps = {
     .unlink = ErrorFopUnlink,
 };
 
-static struct Mount* GetDevMountPoint(const struct Vnode *dev)
+static struct Mount* GetDevMountPoint(struct Vnode *dev)
 {
     struct Mount *mnt = NULL;
     LIST_HEAD *mntList = GetMountList();
@@ -394,7 +394,7 @@ static void FilePreClose(struct file *filep, const struct file_operations_vfs *o
     }
 }
 
-static void FileDisableAndClean(const struct Mount *mnt)
+static void FileDisableAndClean(struct Mount *mnt)
 {
     struct filelist *flist = &tg_filelist;
     struct file *filep = NULL;
@@ -435,7 +435,7 @@ static void VnodeTryFree(struct Vnode *vnode)
     vnode->fop = &g_errorFileOps;
 }
 
-static void VnodeTryFreeAll(const struct Mount *mount)
+static void VnodeTryFreeAll(struct Mount *mount)
 {
     struct Vnode *vnode = NULL;
     struct Vnode *nextVnode = NULL;

fs/vfs/operation/vfs_writev.c

@@ -66,6 +66,7 @@ static int iov_trans_to_buf(char *buf, ssize_t totallen, const struct iovec *iov
             } else {
                 writepart = bytestowrite - ret;
                 curbuf += writepart;
+                totallen -= writepart;
                 break;
             }
         }

kernel/base/include/los_vm_dump.h

@@ -70,7 +70,7 @@ VOID OsVmPhysDump(VOID);
 VOID OsVmPhysUsedInfoGet(UINT32 *usedCount, UINT32 *totalCount);
 INT32 OsRegionOverlapCheck(LosVmSpace *space, LosVmMapRegion *region);
 VOID OsDumpPte(VADDR_T vaddr);
-LosProcessCB *OsGetPIDByAspace(const LosVmSpace *space);
+LosProcessCB *OsGetPIDByAspace(LosVmSpace *space);
 CHAR *OsArchFlagsToStr(const UINT32 archFlags);
 
 #ifdef __cplusplus

kernel/base/include/los_vm_filemap.h

@@ -193,7 +193,7 @@ VOID OsVmmFileRegionFree(struct file *filep, LosProcessCB *processCB);
 
 LosFilePage *OsPageCacheAlloc(struct page_mapping *mapping, VM_OFFSET_T pgoff);
 LosFilePage *OsFindGetEntry(struct page_mapping *mapping, VM_OFFSET_T pgoff);
-LosMapInfo *OsGetMapInfo(const LosFilePage *page, const LosArchMmu *archMmu, VADDR_T vaddr);
+LosMapInfo *OsGetMapInfo(LosFilePage *page, LosArchMmu *archMmu, VADDR_T vaddr);
 VOID OsAddMapInfo(LosFilePage *page, LosArchMmu *archMmu, VADDR_T vaddr);
 VOID OsDelMapInfo(LosVmMapRegion *region, LosVmPgFault *pgFault, BOOL cleanDirty);
 VOID OsFileCacheFlush(struct page_mapping *mapping);
@@ -208,7 +208,7 @@ VOID OsDeletePageCacheLru(LosFilePage *page);
 VOID OsPageRefDecNoLock(LosFilePage *page);
 VOID OsPageRefIncLocked(LosFilePage *page);
 int OsTryShrinkMemory(size_t nPage);
-VOID OsMarkPageDirty(LosFilePage *fpage, const LosVmMapRegion *region, int off, int len);
+VOID OsMarkPageDirty(LosFilePage *fpage, LosVmMapRegion *region, int off, int len);
 
 #ifdef LOSCFG_DEBUG_VERSION
 VOID ResetPageCacheHitInfo(int *try, int *hit);

kernel/base/ipc/los_rwlock.c

@@ -96,7 +96,7 @@ UINT32 LOS_RwlockDestroy(LosRwlock *rwlock)
     return LOS_OK;
 }
 
-STATIC UINT32 OsRwlockCheck(const LosRwlock *rwlock)
+STATIC UINT32 OsRwlockCheck(LosRwlock *rwlock)
 {
     if (rwlock == NULL) {
         return LOS_EINVAL;

kernel/base/ipc/los_signal.c

@@ -78,6 +78,7 @@ STATIC VOID OsMoveTmpInfoToUnbInfo(sig_cb *sigcb, INT32 signo)
             /* delete tmpinfo from tmpList. */
             *prevHook = tmpInfoNode->next;
             (VOID)LOS_MemFree(m_aucSysMem0, tmpInfoNode);
+            tmpInfoNode = *prevHook;
             break;
         }
         prevHook = &tmpInfoNode->next;

kernel/base/mem/tlsf/los_memory.c

@@ -918,7 +918,7 @@ STATIC UINT32 OsMemPoolAdd(VOID *pool, UINT32 size)
     return LOS_OK;
 }
 
-STATIC UINT32 OsMemPoolDelete(const VOID *pool)
+STATIC UINT32 OsMemPoolDelete(VOID *pool)
 {
     UINT32 ret = LOS_NOK;
     VOID *nextPool = NULL;

kernel/base/vm/los_vm_dump.c

@@ -253,7 +253,7 @@ UINT32 OsUProcessPmUsage(LosVmSpace *space, UINT32 *sharePm, UINT32 *actualPm)
     return pmSize;
 }
 
-LosProcessCB *OsGetPIDByAspace(const LosVmSpace *space)
+LosProcessCB *OsGetPIDByAspace(LosVmSpace *space)
 {
     UINT32 pid;
     UINT32 intSave;

kernel/base/vm/los_vm_filemap.c

@@ -125,10 +125,10 @@ VOID OsAddMapInfo(LosFilePage *page, LosArchMmu *archMmu, VADDR_T vaddr)
     page->n_maps++;
 }
 
-LosMapInfo *OsGetMapInfo(const LosFilePage *page, const LosArchMmu *archMmu, VADDR_T vaddr)
+LosMapInfo *OsGetMapInfo(LosFilePage *page, LosArchMmu *archMmu, VADDR_T vaddr)
 {
     LosMapInfo *info = NULL;
-    const LOS_DL_LIST *immap = &page->i_mmap;
+    LOS_DL_LIST *immap = &page->i_mmap;
 
     LOS_DL_LIST_FOR_EACH_ENTRY(info, immap, LosMapInfo, node) {
         if ((info->archMmu == archMmu) && (info->vaddr == vaddr) && (info->page == page)) {
@@ -214,7 +214,7 @@ VOID OsVmmFileRemove(LosVmMapRegion *region, LosArchMmu *archMmu, VM_OFFSET_T pg
     return;
 }
 
-VOID OsMarkPageDirty(LosFilePage *fpage, const LosVmMapRegion *region, INT32 off, INT32 len)
+VOID OsMarkPageDirty(LosFilePage *fpage, LosVmMapRegion *region, INT32 off, INT32 len)
 {
     if (region != NULL) {
         OsSetPageDirty(fpage->vmPage);

kernel/base/vm/los_vm_map.c

@@ -233,7 +233,7 @@ LosVmSpace *OsCreateUserVmSpace(VOID)
     return space;
 }
 
-STATIC BOOL OsVmSpaceParamCheck(const LosVmSpace *vmSpace)
+STATIC BOOL OsVmSpaceParamCheck(LosVmSpace *vmSpace)
 {
     if (vmSpace == NULL) {
         return FALSE;

kernel/extended/perf/los_perf.c

@@ -289,7 +289,7 @@ STATIC UINT32 OsPerfCollectData(Event *event, PerfSampleData *data, PerfRegs *re
  * return TRUE if user haven't specified any taskId(which is supposed
  * to instrument the whole system)
  */
-STATIC INLINE BOOL OsFilterId(UINT32 id, const UINT32 *ids, UINT8 idsNr)
+STATIC INLINE BOOL OsFilterId(UINT32 id, UINT32 *ids, UINT8 idsNr)
 {
     UINT32 i;
     if (!idsNr) {

kernel/extended/power/los_pm.c

@@ -300,7 +300,7 @@ UINT32 LOS_PmRegister(LOS_PmNodeType type, VOID *node)
     return LOS_EINVAL;
 }
 
-STATIC UINT32 OsPmDeviceUnregister(LosPmCB *pm, const LosPmDevice *device)
+STATIC UINT32 OsPmDeviceUnregister(LosPmCB *pm, LosPmDevice *device)
 {
     LOS_SpinLock(&g_pmSpin);
     if (pm->device == device) {

security/vid/vid.c

@@ -116,8 +116,8 @@ static UINT16 GetFreeVid(VOID)
     for (i = 0; i < mapMaxNum; i++) {
         num = idMap->bitMap[i];
         for (j = 0; j < INT_BIT_COUNT; j++) {
-            if ((num & (1U << j)) == 0) {
-                num |= 1U << j;
+            if ((num & (1 << j)) == 0) {
+                num |= 1 << j;
                 idMap->bitMap[i] = num;
                 return (INT_BIT_COUNT * i + j);
             }

testsuites/kernel/sample/kernel_base/core/hwi_nesting/full/It_los_hwi_nesting_007.c

@@ -49,13 +49,13 @@ static VOID NestingPrioHigh(INT32 irq, VOID *data)
     UINT64 curTime;
     curTime = LOS_CurrNanosec();
     g_recordTime[g_saveIndex] = curTime - g_intPendTime;
+    if (g_saveIndex == MAX_RECORD_SIZE) {
+        g_saveIndex = 0;
+    }
     dprintf("curTime = %lld, pendTime = %lld \n", curTime, g_intPendTime);
     dprintf("%lld\n", curTime - g_intPendTime);
     dprintf("[swtmr] hwi response time : ##%lld \n", g_recordTime[g_saveIndex]);
     g_saveIndex++;
-    if (g_saveIndex == MAX_RECORD_SIZE) {
-        g_saveIndex = 0;
-    }
 }
 
 static VOID DumpResult()

testsuites/kernel/sample/kernel_extend/cpup/smoke/It_extend_cpup_001.c

@@ -39,7 +39,8 @@ extern "C" {
 
 static UINT32 TaskF02(VOID)
 {
-    UINT32 ret = OS_ERROR, cpupUse;
+    UINT32 ret = OS_ERROR;
+    UINT32 cpupUse;
     g_cpupTestCount++;
 
     // 2, Here, assert that g_cpupTestCount is equal to the expected value.

testsuites/kernel/sample/kernel_extend/cpup/smp/It_smp_extend_cpup_005.c

@@ -76,7 +76,7 @@ static void Task01(void)
     ICUNIT_GOTO_EQUAL(ret, LOS_OK, ret, EXIT2);
 
     ret = memset_s((void *)(&taskInitParam), sizeof(TSK_INIT_PARAM_S), 0, sizeof(TSK_INIT_PARAM_S));
-    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT2);
+    ICUNIT_GOTO_EQUAL(ret, 0, ret, EXIT2;
     taskInitParam.pfnTaskEntry = (TSK_ENTRY_FUNC)Task04;
     taskInitParam.uwStackSize = LOSCFG_BASE_CORE_TSK_DEFAULT_STACK_SIZE;
     taskInitParam.pcName = "SmpCpup005_task04";

testsuites/unittest/basic/exc/smoke/it_test_exc_001.cpp

@@ -34,11 +34,9 @@ static int TestCase(void)
 {
     int ret;
     int status = 0;
-    int *test = NULL; // for trggering an exception
     pid_t pid = fork();
     ICUNIT_ASSERT_WITHIN_EQUAL(pid, 0, INVALID_PROCESS_ID, pid);
     if (pid == 0) {
-        *test = 0x1; // Deliberately trigger an exceptioin
         exit(0);
     }
 
@@ -54,7 +52,6 @@ static int TestCase(void)
     pid = fork();
     ICUNIT_ASSERT_WITHIN_EQUAL(pid, 0, INVALID_PROCESS_ID, pid);
     if (pid == 0) {
-        *test = 0x1; // Deliberately trigger an exceptioin
         exit(0);
     }
 

testsuites/unittest/basic/exc/smoke/it_test_exc_004.cpp

@@ -36,16 +36,13 @@
 static int TestThread(void)
 {
     int ret;
-    int *test = nullptr; // For triggering an exceptioin
 
     pid_t pid = fork();
     ICUNIT_ASSERT_WITHIN_EQUAL(pid, 0, INVALID_PROCESS_ID, pid);
     if (pid == 0) {
-        *test = 0x1; // Deliberately trigger an exceptioin
         while (1) {
         }
     }
-    *test = 0x1; // Deliberately trigger an exceptioin
 
     ret = waitpid(pid, NULL, 0);
     ICUNIT_ASSERT_EQUAL(ret, pid, ret);

testsuites/unittest/basic/mem/shm/full/shm_test_002.cpp

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2022 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -31,46 +31,39 @@
 #include "it_test_shm.h"
 
 #define SHMID_MAX 192
-#define SHM_FLAG 0777
 
 static int Testcase(VOID)
 {
     int shmid[SHMID_MAX + 1] = {-1};
     int ret;
     int i;
-    struct shm_info shmInfo;
-    int leftShmIds;
 
-    ret = shmctl(0, SHM_INFO, reinterpret_cast<struct shmid_ds *>(&shmInfo));
-    ICUNIT_ASSERT_EQUAL(ret, SHMID_MAX, ret);
-    leftShmIds = SHMID_MAX - shmInfo.used_ids;
-
-    shmid[0] = shmget((key_t)0x1234, PAGE_SIZE, SHM_FLAG | IPC_CREAT); // 0x1234: a key used to create shared memory
+    shmid[0] = shmget((key_t)0x1234, PAGE_SIZE, 0777 | IPC_CREAT);
     ICUNIT_ASSERT_NOT_EQUAL(shmid[0], -1, shmid[0]);
 
     ret = shmctl(shmid[0], IPC_RMID, NULL);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
 
-    shmid[0] = shmget(IPC_PRIVATE, PAGE_SIZE, SHM_FLAG | IPC_CREAT);
+    shmid[0] = shmget(IPC_PRIVATE, PAGE_SIZE, 0777 | IPC_CREAT);
     ICUNIT_ASSERT_NOT_EQUAL(shmid[0], -1, shmid[0]);
 
     ret = shmctl(shmid[0], IPC_RMID, NULL);
     ICUNIT_ASSERT_EQUAL(ret, 0, ret);
 
-    for (i = 0; i < leftShmIds; i++) {
-        shmid[i] = shmget(IPC_PRIVATE, PAGE_SIZE, SHM_FLAG | IPC_CREAT);
+    for (i = 0; i < SHMID_MAX; i++) {
+        shmid[i] = shmget(IPC_PRIVATE, PAGE_SIZE, 0777 | IPC_CREAT);
         ICUNIT_ASSERT_NOT_EQUAL(shmid[i], -1, shmid[i]);
     }
 
-    shmid[leftShmIds] = shmget(IPC_PRIVATE, PAGE_SIZE, SHM_FLAG | IPC_CREAT);
-    ICUNIT_ASSERT_EQUAL(shmid[leftShmIds], -1, shmid[leftShmIds]);
+    shmid[SHMID_MAX] = shmget(IPC_PRIVATE, PAGE_SIZE, 0777 | IPC_CREAT);
+    ICUNIT_ASSERT_EQUAL(shmid[SHMID_MAX], -1, shmid[SHMID_MAX]);
 
-    for (i = 0; i < leftShmIds; i++) {
+    for (i = 0; i < SHMID_MAX; i++) {
         ret = shmctl(shmid[i], IPC_RMID, NULL);
         ICUNIT_ASSERT_EQUAL(ret, 0, ret);
     }
 
-    for (i = 0; i < leftShmIds; i++) {
+    for (i = 0; i < SHMID_MAX; i++) {
         ret = shmctl(shmid[i], IPC_RMID, NULL);
         ICUNIT_ASSERT_EQUAL(ret, -1, ret);
     }

testsuites/unittest/libc/time/clock/lt_clock_test.h

@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
- * Copyright (c) 2020-2022 Huawei Device Co., Ltd. All rights reserved.
+ * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without modification,
  * are permitted provided that the following conditions are met:
@@ -41,7 +41,7 @@
 #define CLOCK_RES_NSEC 1000
 #define CLOCK_COARSE_RES_SEC 0
 #define CLOCK_COARSE_RES_NSEC 1000000
-#define CLOCK_GET_CPU_CLOCKID(pid) ((-(pid) - 1) * 8U + 2)
+#define CLOCK_GET_CPU_CLOCKID(pid) ((-pid - 1) * 8U + 2)
 
 void ClockTestSmoke(void);
 void ClockTest001(void);

testsuites/unittest/net/netdb/full/net_netdb_test_004.cpp

@@ -65,7 +65,7 @@ static int GetHostByAddrTest(void)
     addr = gethostbyaddr(&ia, sizeof ia, AF_INET);
     ICUNIT_ASSERT_EQUAL(errno, EINVAL, errno);
 
-    RecoveryFileEnv(pathList, file_number);
+    RecoveryFileEnv(pathList, file_number);
     return ICUNIT_SUCCESS;
 }