Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2)  * JFFS2 -- Journalling Flash File System, Version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Copyright © 2001-2007 Red Hat, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Created by David Woodhouse <dwmw2@infradead.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  * For licensing information, see the file 'LICENCE' in this directory.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) #include <linux/mount.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) #include <linux/fs_context.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) #include <linux/fs_parser.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) #include <linux/jffs2.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) #include <linux/mtd/super.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #include <linux/ctype.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) #include <linux/namei.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) #include <linux/exportfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) #include "compr.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) #include "nodelist.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) static void jffs2_put_super(struct super_block *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) static struct kmem_cache *jffs2_inode_cachep;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) static struct inode *jffs2_alloc_inode(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	struct jffs2_inode_info *f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 	f = kmem_cache_alloc(jffs2_inode_cachep, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	if (!f)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 		return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	return &f->vfs_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static void jffs2_free_inode(struct inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) 	kfree(f->target);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 	kmem_cache_free(jffs2_inode_cachep, f);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) static void jffs2_i_init_once(void *foo)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	struct jffs2_inode_info *f = foo;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 	mutex_init(&f->sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	inode_init_once(&f->vfs_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) static const char *jffs2_compr_name(unsigned int compr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	switch (compr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	case JFFS2_COMPR_MODE_NONE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		return "none";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) #ifdef CONFIG_JFFS2_LZO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 	case JFFS2_COMPR_MODE_FORCELZO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		return "lzo";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) #ifdef CONFIG_JFFS2_ZLIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	case JFFS2_COMPR_MODE_FORCEZLIB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 		return "zlib";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 		/* should never happen; programmer error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 		WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 		return "";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) static int jffs2_show_options(struct seq_file *s, struct dentry *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	struct jffs2_sb_info *c = JFFS2_SB_INFO(root->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	struct jffs2_mount_opts *opts = &c->mount_opts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	if (opts->override_compr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 		seq_printf(s, ",compr=%s", jffs2_compr_name(opts->compr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 	if (opts->set_rp_size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 		seq_printf(s, ",rp_size=%u", opts->rp_size / 1024);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) static int jffs2_sync_fs(struct super_block *sb, int wait)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 	if (jffs2_is_writebuffered(c))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 		cancel_delayed_work_sync(&c->wbuf_dwork);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 	mutex_lock(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	jffs2_flush_wbuf_pad(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 	mutex_unlock(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) static struct inode *jffs2_nfs_get_inode(struct super_block *sb, uint64_t ino,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 					 uint32_t generation)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	/* We don't care about i_generation. We'll destroy the flash
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	   before we start re-using inode numbers anyway. And even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	   if that wasn't true, we'd have other problems...*/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return jffs2_iget(sb, ino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static struct dentry *jffs2_fh_to_dentry(struct super_block *sb, struct fid *fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 					 int fh_len, int fh_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)         return generic_fh_to_dentry(sb, fid, fh_len, fh_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)                                     jffs2_nfs_get_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static struct dentry *jffs2_fh_to_parent(struct super_block *sb, struct fid *fid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 					 int fh_len, int fh_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)         return generic_fh_to_parent(sb, fid, fh_len, fh_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)                                     jffs2_nfs_get_inode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static struct dentry *jffs2_get_parent(struct dentry *child)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 	struct jffs2_inode_info *f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	uint32_t pino;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 	BUG_ON(!d_is_dir(child));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	f = JFFS2_INODE_INFO(d_inode(child));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	pino = f->inocache->pino_nlink;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	JFFS2_DEBUG("Parent of directory ino #%u is #%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 		    f->inocache->ino, pino);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	return d_obtain_alias(jffs2_iget(child->d_sb, pino));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) static const struct export_operations jffs2_export_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 	.get_parent = jffs2_get_parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 	.fh_to_dentry = jffs2_fh_to_dentry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 	.fh_to_parent = jffs2_fh_to_parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)  * JFFS2 mount options.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)  * Opt_source: The source device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162)  * Opt_override_compr: override default compressor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)  * Opt_rp_size: size of reserved pool in KiB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	Opt_override_compr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	Opt_rp_size,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) static const struct constant_table jffs2_param_compr[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	{"none",	JFFS2_COMPR_MODE_NONE },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) #ifdef CONFIG_JFFS2_LZO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	{"lzo",		JFFS2_COMPR_MODE_FORCELZO },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) #ifdef CONFIG_JFFS2_ZLIB
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 	{"zlib",	JFFS2_COMPR_MODE_FORCEZLIB },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static const struct fs_parameter_spec jffs2_fs_parameters[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	fsparam_enum	("compr",	Opt_override_compr, jffs2_param_compr),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 	fsparam_u32	("rp_size",	Opt_rp_size),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) static int jffs2_parse_param(struct fs_context *fc, struct fs_parameter *param)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	struct fs_parse_result result;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	struct jffs2_sb_info *c = fc->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 	int opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	opt = fs_parse(fc, jffs2_fs_parameters, param, &result);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (opt < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		return opt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	switch (opt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	case Opt_override_compr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 		c->mount_opts.compr = result.uint_32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 		c->mount_opts.override_compr = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	case Opt_rp_size:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 		if (result.uint_32 > UINT_MAX / 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 			return invalf(fc, "jffs2: rp_size unrepresentable");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 		c->mount_opts.rp_size = result.uint_32 * 1024;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 		c->mount_opts.set_rp_size = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 		break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) static inline void jffs2_update_mount_opts(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	struct jffs2_sb_info *new_c = fc->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 	struct jffs2_sb_info *c = JFFS2_SB_INFO(fc->root->d_sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 	mutex_lock(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	if (new_c->mount_opts.override_compr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 		c->mount_opts.override_compr = new_c->mount_opts.override_compr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		c->mount_opts.compr = new_c->mount_opts.compr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 	if (new_c->mount_opts.set_rp_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		c->mount_opts.set_rp_size = new_c->mount_opts.set_rp_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 		c->mount_opts.rp_size = new_c->mount_opts.rp_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	mutex_unlock(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) static int jffs2_reconfigure(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 	struct super_block *sb = fc->root->d_sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	sync_filesystem(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	jffs2_update_mount_opts(fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 	return jffs2_do_remount_fs(sb, fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static const struct super_operations jffs2_super_operations =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 	.alloc_inode =	jffs2_alloc_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 	.free_inode =	jffs2_free_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	.put_super =	jffs2_put_super,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	.statfs =	jffs2_statfs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	.evict_inode =	jffs2_evict_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	.dirty_inode =	jffs2_dirty_inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	.show_options =	jffs2_show_options,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	.sync_fs =	jffs2_sync_fs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255)  * fill in the superblock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) static int jffs2_fill_super(struct super_block *sb, struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	struct jffs2_sb_info *c = sb->s_fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	jffs2_dbg(1, "jffs2_get_sb_mtd():"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 		  " New superblock for device %d (\"%s\")\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 		  sb->s_mtd->index, sb->s_mtd->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	c->mtd = sb->s_mtd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	c->os_priv = sb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	if (c->mount_opts.rp_size > c->mtd->size)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 		return invalf(fc, "jffs2: Too large reserve pool specified, max is %llu KB",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 			      c->mtd->size / 1024);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	/* Initialize JFFS2 superblock locks, the further initialization will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	 * be done later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	mutex_init(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	mutex_init(&c->erase_free_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	init_waitqueue_head(&c->erase_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	init_waitqueue_head(&c->inocache_wq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	spin_lock_init(&c->erase_completion_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	spin_lock_init(&c->inocache_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	sb->s_op = &jffs2_super_operations;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	sb->s_export_op = &jffs2_export_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	sb->s_flags = sb->s_flags | SB_NOATIME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	sb->s_xattr = jffs2_xattr_handlers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) #ifdef CONFIG_JFFS2_FS_POSIX_ACL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	sb->s_flags |= SB_POSIXACL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	return jffs2_do_fill_super(sb, fc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) static int jffs2_get_tree(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 	return get_tree_mtd(fc, jffs2_fill_super);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) static void jffs2_free_fc(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	kfree(fc->s_fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) static const struct fs_context_operations jffs2_context_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	.free		= jffs2_free_fc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	.parse_param	= jffs2_parse_param,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	.get_tree	= jffs2_get_tree,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 	.reconfigure	= jffs2_reconfigure,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) static int jffs2_init_fs_context(struct fs_context *fc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	struct jffs2_sb_info *ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	ctx = kzalloc(sizeof(struct jffs2_sb_info), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	if (!ctx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	fc->s_fs_info = ctx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 	fc->ops = &jffs2_context_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) static void jffs2_put_super (struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 	struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 	jffs2_dbg(2, "%s()\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 	mutex_lock(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 	jffs2_flush_wbuf_pad(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 	mutex_unlock(&c->alloc_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 	jffs2_sum_exit(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 	jffs2_free_ino_caches(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	jffs2_free_raw_node_refs(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 	kvfree(c->blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 	jffs2_flash_cleanup(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 	kfree(c->inocache_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 	jffs2_clear_xattr_subsystem(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 	mtd_sync(c->mtd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 	jffs2_dbg(1, "%s(): returning\n", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) static void jffs2_kill_sb(struct super_block *sb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 	struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	if (c && !sb_rdonly(sb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 		jffs2_stop_garbage_collect_thread(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	kill_mtd_super(sb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	kfree(c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) static struct file_system_type jffs2_fs_type = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 	.owner =	THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	.name =		"jffs2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	.init_fs_context = jffs2_init_fs_context,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	.parameters =	jffs2_fs_parameters,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 	.kill_sb =	jffs2_kill_sb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) MODULE_ALIAS_FS("jffs2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) static int __init init_jffs2_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	/* Paranoia checks for on-medium structures. If we ask GCC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	   to pack them with __attribute__((packed)) then it _also_
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	   assumes that they're not aligned -- so it emits crappy
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	   code on some architectures. Ideally we want an attribute
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	   which means just 'no padding', without the alignment
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 	   thing. But GCC doesn't have that -- we have to just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	   hope the structs are the right sizes, instead. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 	BUILD_BUG_ON(sizeof(struct jffs2_unknown_node) != 12);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	BUILD_BUG_ON(sizeof(struct jffs2_raw_dirent) != 40);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	BUILD_BUG_ON(sizeof(struct jffs2_raw_inode) != 68);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 	BUILD_BUG_ON(sizeof(struct jffs2_raw_summary) != 32);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 	pr_info("version 2.2."
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) #ifdef CONFIG_JFFS2_FS_WRITEBUFFER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 	       " (NAND)"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) #ifdef CONFIG_JFFS2_SUMMARY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) 	       " (SUMMARY) "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) 	       " © 2001-2006 Red Hat, Inc.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) 	jffs2_inode_cachep = kmem_cache_create("jffs2_i",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 					     sizeof(struct jffs2_inode_info),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 					     0, (SLAB_RECLAIM_ACCOUNT|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 						SLAB_MEM_SPREAD|SLAB_ACCOUNT),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 					     jffs2_i_init_once);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	if (!jffs2_inode_cachep) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 		pr_err("error: Failed to initialise inode cache\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	ret = jffs2_compressors_init();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 		pr_err("error: Failed to initialise compressors\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 		goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 	ret = jffs2_create_slab_caches();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		pr_err("error: Failed to initialise slab caches\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 		goto out_compressors;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	ret = register_filesystem(&jffs2_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 		pr_err("error: Failed to register filesystem\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 		goto out_slab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)  out_slab:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	jffs2_destroy_slab_caches();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414)  out_compressors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) 	jffs2_compressors_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)  out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	kmem_cache_destroy(jffs2_inode_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) static void __exit exit_jffs2_fs(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	unregister_filesystem(&jffs2_fs_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	jffs2_destroy_slab_caches();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	jffs2_compressors_exit();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	 * Make sure all delayed rcu free inodes are flushed before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	 * destroy cache.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) 	rcu_barrier();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	kmem_cache_destroy(jffs2_inode_cachep);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) module_init(init_jffs2_fs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) module_exit(exit_jffs2_fs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) MODULE_DESCRIPTION("The Journalling Flash File System, v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) MODULE_AUTHOR("Red Hat, Inc.");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) MODULE_LICENSE("GPL"); // Actually dual-licensed, but it doesn't matter for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 		       // the sake of this tag. It's Free Software.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) MODULE_IMPORT_NS(ANDROID_GKI_VFS_EXPORT_ONLY);