yystopf/openharmony_kernel_liteos_a
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add debug code to fix bug: kernel crashed after rmdir the umounted folder, parent->data null

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Change-Id: I44981eb9475feb4604ffe91244b4dff00f7d1548
This commit is contained in:
chenwei
2021-04-17 11:44:03 +08:00
parent a7c5abf64c
commit 296274b60f
2 changed files with 16 additions and 5 deletions
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6
fs/jffs2/src/vfs_jffs2.c
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@@ -593,6 +593,8 @@ int VfsJffs2Chattr(struct Vnode *pVnode, struct IATTR *attr)
return ret;
}
extern struct Vnode *g_parentOfCoveredVnode;
int VfsJffs2Rmdir(struct Vnode *parentVnode, struct Vnode *targetVnode, char *path)
{
int ret;
@@ -603,6 +605,10 @@ int VfsJffs2Rmdir(struct Vnode *parentVnode, struct Vnode *targetVnode, char *pa
LOS_MuxLock(&g_jffs2FsLock, (uint32_t)JFFS2_WAITING_FOREVER);
if (parentVnode->data == NULL) {
PRINT_ERR("%s-%d: rmdir parent of mounted vnode. vnode=%p userCount=%d inode=%p\n", __FUNCTION__, __LINE__, parentVnode, parentVnode->useCount, parentVnode->data);
PRINT_ERR("%s-%d: global rmdir parent of mounted vnode. vnode=%p userCount=%d inode=%p\n", __FUNCTION__, __LINE__, g_parentOfCoveredVnode, g_parentOfCoveredVnode->useCount, g_parentOfCoveredVnode->data);
}
ret = jffs2_rmdir((struct jffs2_inode *)parentVnode->data, (struct jffs2_inode *)targetVnode->data,
(const unsigned char *)path);