Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

Pull UDF and quota updates from Jan Kara:
 "A few UDF fixes and also a few patches which are preparing filesystems
  for support of project quotas in VFS"

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: Fix loading of special inodes
  ocfs2: Back out change to use OCFS2_MAXQUOTAS in ocfs2_setattr()
  udf: remove redundant sys_tz declaration
  ocfs2: Don't use MAXQUOTAS value
  reiserfs: Don't use MAXQUOTAS value
  ext3: Don't use MAXQUOTAS value
  udf: Fix race between write(2) and close(2)

fs/ext3/ext3.h

@@ -237,6 +237,8 @@ struct ext3_new_group_data {
 #define EXT3_IOC32_GETVERSION_OLD	FS_IOC32_GETVERSION
 #define EXT3_IOC32_SETVERSION_OLD	FS_IOC32_SETVERSION
 
+/* Number of supported quota types */
+#define EXT3_MAXQUOTAS 2
 
 /*
  *  Mount options
@@ -248,7 +250,7 @@ struct ext3_mount_options {
 	unsigned long s_commit_interval;
 #ifdef CONFIG_QUOTA
 	int s_jquota_fmt;
-	char *s_qf_names[MAXQUOTAS];
+	char *s_qf_names[EXT3_MAXQUOTAS];
 #endif
 };
 
@@ -669,7 +671,7 @@ struct ext3_sb_info {
 	unsigned long s_commit_interval;
 	struct block_device *journal_bdev;
 #ifdef CONFIG_QUOTA
-	char *s_qf_names[MAXQUOTAS];		/* Names of quota files with journalled quota */
+	char *s_qf_names[EXT3_MAXQUOTAS];	/* Names of quota files with journalled quota */
 	int s_jquota_fmt;			/* Format of quota to use */
 #endif
 };
@@ -1183,9 +1185,9 @@ extern const struct inode_operations ext3_fast_symlink_inode_operations;
 #define EXT3_QUOTA_INIT_BLOCKS(sb) 0
 #define EXT3_QUOTA_DEL_BLOCKS(sb) 0
 #endif
-#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb))
-#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb))
-#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb))
+#define EXT3_MAXQUOTAS_TRANS_BLOCKS(sb) (EXT3_MAXQUOTAS*EXT3_QUOTA_TRANS_BLOCKS(sb))
+#define EXT3_MAXQUOTAS_INIT_BLOCKS(sb) (EXT3_MAXQUOTAS*EXT3_QUOTA_INIT_BLOCKS(sb))
+#define EXT3_MAXQUOTAS_DEL_BLOCKS(sb) (EXT3_MAXQUOTAS*EXT3_QUOTA_DEL_BLOCKS(sb))
 
 int
 ext3_mark_iloc_dirty(handle_t *handle,

fs/ext3/super.c

@@ -441,7 +441,7 @@ static void ext3_put_super (struct super_block * sb)
 	percpu_counter_destroy(&sbi->s_dirs_counter);
 	brelse(sbi->s_sbh);
 #ifdef CONFIG_QUOTA
-	for (i = 0; i < MAXQUOTAS; i++)
+	for (i = 0; i < EXT3_MAXQUOTAS; i++)
 		kfree(sbi->s_qf_names[i]);
 #endif
 
@@ -1555,7 +1555,7 @@ static void ext3_orphan_cleanup (struct super_block * sb,
 	/* Needed for iput() to work correctly and not trash data */
 	sb->s_flags |= MS_ACTIVE;
 	/* Turn on quotas so that they are updated correctly */
-	for (i = 0; i < MAXQUOTAS; i++) {
+	for (i = 0; i < EXT3_MAXQUOTAS; i++) {
 		if (EXT3_SB(sb)->s_qf_names[i]) {
 			int ret = ext3_quota_on_mount(sb, i);
 			if (ret < 0)
@@ -1606,7 +1606,7 @@ static void ext3_orphan_cleanup (struct super_block * sb,
 		       PLURAL(nr_truncates));
 #ifdef CONFIG_QUOTA
 	/* Turn quotas off */
-	for (i = 0; i < MAXQUOTAS; i++) {
+	for (i = 0; i < EXT3_MAXQUOTAS; i++) {
 		if (sb_dqopt(sb)->files[i])
 			dquot_quota_off(sb, i);
 	}
@@ -2139,7 +2139,7 @@ static int ext3_fill_super (struct super_block *sb, void *data, int silent)
 	kfree(sbi->s_group_desc);
 failed_mount:
 #ifdef CONFIG_QUOTA
-	for (i = 0; i < MAXQUOTAS; i++)
+	for (i = 0; i < EXT3_MAXQUOTAS; i++)
 		kfree(sbi->s_qf_names[i]);
 #endif
 	ext3_blkdev_remove(sbi);
@@ -2659,7 +2659,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 	old_opts.s_commit_interval = sbi->s_commit_interval;
 #ifdef CONFIG_QUOTA
 	old_opts.s_jquota_fmt = sbi->s_jquota_fmt;
-	for (i = 0; i < MAXQUOTAS; i++)
+	for (i = 0; i < EXT3_MAXQUOTAS; i++)
 		if (sbi->s_qf_names[i]) {
 			old_opts.s_qf_names[i] = kstrdup(sbi->s_qf_names[i],
 							 GFP_KERNEL);
@@ -2763,7 +2763,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 	}
 #ifdef CONFIG_QUOTA
 	/* Release old quota file names */
-	for (i = 0; i < MAXQUOTAS; i++)
+	for (i = 0; i < EXT3_MAXQUOTAS; i++)
 		kfree(old_opts.s_qf_names[i]);
 #endif
 	if (enable_quota)
@@ -2777,7 +2777,7 @@ static int ext3_remount (struct super_block * sb, int * flags, char * data)
 	sbi->s_commit_interval = old_opts.s_commit_interval;
 #ifdef CONFIG_QUOTA
 	sbi->s_jquota_fmt = old_opts.s_jquota_fmt;
-	for (i = 0; i < MAXQUOTAS; i++) {
+	for (i = 0; i < EXT3_MAXQUOTAS; i++) {
 		kfree(sbi->s_qf_names[i]);
 		sbi->s_qf_names[i] = old_opts.s_qf_names[i];
 	}

fs/ocfs2/file.c

@@ -1252,7 +1252,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
 	brelse(bh);
 
 	/* Release quota pointers in case we acquired them */
-	for (qtype = 0; qtype < MAXQUOTAS; qtype++)
+	for (qtype = 0; qtype < OCFS2_MAXQUOTAS; qtype++)
 		dqput(transfer_to[qtype]);
 
 	if (!status && attr->ia_valid & ATTR_MODE) {

fs/ocfs2/quota.h

@@ -17,6 +17,9 @@
 
 #include "ocfs2.h"
 
+/* Number of quota types we support */
+#define OCFS2_MAXQUOTAS 2
+
 /*
  * In-memory structures
  */
@@ -39,7 +42,7 @@ struct ocfs2_recovery_chunk {
 };
 
 struct ocfs2_quota_recovery {
-	struct list_head r_list[MAXQUOTAS];	/* List of chunks to recover */
+	struct list_head r_list[OCFS2_MAXQUOTAS];	/* List of chunks to recover */
 };
 
 /* In-memory structure with quota header information */

fs/ocfs2/quota_global.c

@@ -336,8 +336,8 @@ void ocfs2_unlock_global_qf(struct ocfs2_mem_dqinfo *oinfo, int ex)
 int ocfs2_global_read_info(struct super_block *sb, int type)
 {
 	struct inode *gqinode = NULL;
-	unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
-					GROUP_QUOTA_SYSTEM_INODE };
+	unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
+					      GROUP_QUOTA_SYSTEM_INODE };
 	struct ocfs2_global_disk_dqinfo dinfo;
 	struct mem_dqinfo *info = sb_dqinfo(sb, type);
 	struct ocfs2_mem_dqinfo *oinfo = info->dqi_priv;

fs/ocfs2/quota_local.c

@@ -166,12 +166,12 @@ static int ocfs2_read_quota_block(struct inode *inode, u64 v_block,
 /* Check whether we understand format of quota files */
 static int ocfs2_local_check_quota_file(struct super_block *sb, int type)
 {
-	unsigned int lmagics[MAXQUOTAS] = OCFS2_LOCAL_QMAGICS;
-	unsigned int lversions[MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS;
-	unsigned int gmagics[MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS;
-	unsigned int gversions[MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS;
-	unsigned int ino[MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
-					GROUP_QUOTA_SYSTEM_INODE };
+	unsigned int lmagics[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QMAGICS;
+	unsigned int lversions[OCFS2_MAXQUOTAS] = OCFS2_LOCAL_QVERSIONS;
+	unsigned int gmagics[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QMAGICS;
+	unsigned int gversions[OCFS2_MAXQUOTAS] = OCFS2_GLOBAL_QVERSIONS;
+	unsigned int ino[OCFS2_MAXQUOTAS] = { USER_QUOTA_SYSTEM_INODE,
+					      GROUP_QUOTA_SYSTEM_INODE };
 	struct buffer_head *bh = NULL;
 	struct inode *linode = sb_dqopt(sb)->files[type];
 	struct inode *ginode = NULL;
@@ -336,7 +336,7 @@ void ocfs2_free_quota_recovery(struct ocfs2_quota_recovery *rec)
 {
 	int type;
 
-	for (type = 0; type < MAXQUOTAS; type++)
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++)
 		free_recovery_list(&(rec->r_list[type]));
 	kfree(rec);
 }
@@ -382,7 +382,7 @@ static struct ocfs2_quota_recovery *ocfs2_alloc_quota_recovery(void)
 	rec = kmalloc(sizeof(struct ocfs2_quota_recovery), GFP_NOFS);
 	if (!rec)
 		return NULL;
-	for (type = 0; type < MAXQUOTAS; type++)
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++)
 		INIT_LIST_HEAD(&(rec->r_list[type]));
 	return rec;
 }
@@ -392,10 +392,11 @@ struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
 						struct ocfs2_super *osb,
 						int slot_num)
 {
-	unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
-					    OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
-	unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
-					LOCAL_GROUP_QUOTA_SYSTEM_INODE };
+	unsigned int feature[OCFS2_MAXQUOTAS] = {
+					OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+					OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+	unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+					      LOCAL_GROUP_QUOTA_SYSTEM_INODE };
 	struct super_block *sb = osb->sb;
 	struct ocfs2_local_disk_dqinfo *ldinfo;
 	struct inode *lqinode;
@@ -412,7 +413,7 @@ struct ocfs2_quota_recovery *ocfs2_begin_quota_recovery(
 		return ERR_PTR(-ENOMEM);
 	/* First init... */
 
-	for (type = 0; type < MAXQUOTAS; type++) {
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
 		if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
 			continue;
 		/* At this point, journal of the slot is already replayed so
@@ -589,8 +590,8 @@ int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
 				struct ocfs2_quota_recovery *rec,
 				int slot_num)
 {
-	unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
-					LOCAL_GROUP_QUOTA_SYSTEM_INODE };
+	unsigned int ino[OCFS2_MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+					      LOCAL_GROUP_QUOTA_SYSTEM_INODE };
 	struct super_block *sb = osb->sb;
 	struct ocfs2_local_disk_dqinfo *ldinfo;
 	struct buffer_head *bh;
@@ -604,7 +605,7 @@ int ocfs2_finish_quota_recovery(struct ocfs2_super *osb,
 	       "slot %u\n", osb->dev_str, slot_num);
 
 	mutex_lock(&sb_dqopt(sb)->dqonoff_mutex);
-	for (type = 0; type < MAXQUOTAS; type++) {
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
 		if (list_empty(&(rec->r_list[type])))
 			continue;
 		trace_ocfs2_finish_quota_recovery(slot_num);

fs/ocfs2/super.c

@@ -899,11 +899,12 @@ static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
 {
 	int type;
 	struct super_block *sb = osb->sb;
-	unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
-					     OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+	unsigned int feature[OCFS2_MAXQUOTAS] = {
+					OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+					OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
 	int status = 0;
 
-	for (type = 0; type < MAXQUOTAS; type++) {
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
 		if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
 			continue;
 		if (unsuspend)
@@ -927,17 +928,19 @@ static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
 
 static int ocfs2_enable_quotas(struct ocfs2_super *osb)
 {
-	struct inode *inode[MAXQUOTAS] = { NULL, NULL };
+	struct inode *inode[OCFS2_MAXQUOTAS] = { NULL, NULL };
 	struct super_block *sb = osb->sb;
-	unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
-					     OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
-	unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+	unsigned int feature[OCFS2_MAXQUOTAS] = {
+					OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+					OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+	unsigned int ino[OCFS2_MAXQUOTAS] = {
+					LOCAL_USER_QUOTA_SYSTEM_INODE,
 					LOCAL_GROUP_QUOTA_SYSTEM_INODE };
 	int status;
 	int type;
 
 	sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
-	for (type = 0; type < MAXQUOTAS; type++) {
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
 		if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
 			continue;
 		inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
@@ -952,12 +955,12 @@ static int ocfs2_enable_quotas(struct ocfs2_super *osb)
 			goto out_quota_off;
 	}
 
-	for (type = 0; type < MAXQUOTAS; type++)
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++)
 		iput(inode[type]);
 	return 0;
 out_quota_off:
 	ocfs2_disable_quotas(osb);
-	for (type = 0; type < MAXQUOTAS; type++)
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++)
 		iput(inode[type]);
 	mlog_errno(status);
 	return status;
@@ -972,7 +975,7 @@ static void ocfs2_disable_quotas(struct ocfs2_super *osb)
 
 	/* We mostly ignore errors in this function because there's not much
 	 * we can do when we see them */
-	for (type = 0; type < MAXQUOTAS; type++) {
+	for (type = 0; type < OCFS2_MAXQUOTAS; type++) {
 		if (!sb_has_quota_loaded(sb, type))
 			continue;
 		/* Cancel periodic syncing before we grab dqonoff_mutex */
@@ -993,8 +996,9 @@ static void ocfs2_disable_quotas(struct ocfs2_super *osb)
 /* Handle quota on quotactl */
 static int ocfs2_quota_on(struct super_block *sb, int type, int format_id)
 {
-	unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
-					     OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+	unsigned int feature[OCFS2_MAXQUOTAS] = {
+					OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+					OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
 
 	if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
 		return -EINVAL;

fs/reiserfs/reiserfs.h

@@ -506,6 +506,9 @@ typedef struct reiserfs_proc_info_data {
 } reiserfs_proc_info_data_t;
 #endif
 
+/* Number of quota types we support */
+#define REISERFS_MAXQUOTAS 2
+
 /* reiserfs union of in-core super block data */
 struct reiserfs_sb_info {
 	/* Buffer containing the super block */
@@ -615,7 +618,7 @@ struct reiserfs_sb_info {
 	spinlock_t old_work_lock;     /* protects old_work and work_queued */
 
 #ifdef CONFIG_QUOTA
-	char *s_qf_names[MAXQUOTAS];
+	char *s_qf_names[REISERFS_MAXQUOTAS];
 	int s_jquota_fmt;
 #endif
 	char *s_jdev;		/* Stored jdev for mount option showing */

fs/reiserfs/super.c

@@ -206,7 +206,7 @@ static int finish_unfinished(struct super_block *s)
 #ifdef CONFIG_QUOTA
 	int i;
 	int ms_active_set;
-	int quota_enabled[MAXQUOTAS];
+	int quota_enabled[REISERFS_MAXQUOTAS];
 #endif
 
 	/* compose key to look for "save" links */
@@ -227,7 +227,7 @@ static int finish_unfinished(struct super_block *s)
 		s->s_flags |= MS_ACTIVE;
 	}
 	/* Turn on quotas so that they are updated correctly */
-	for (i = 0; i < MAXQUOTAS; i++) {
+	for (i = 0; i < REISERFS_MAXQUOTAS; i++) {
 		quota_enabled[i] = 1;
 		if (REISERFS_SB(s)->s_qf_names[i]) {
 			int ret;
@@ -370,7 +370,7 @@ static int finish_unfinished(struct super_block *s)
 #ifdef CONFIG_QUOTA
 	/* Turn quotas off */
 	reiserfs_write_unlock(s);
-	for (i = 0; i < MAXQUOTAS; i++) {
+	for (i = 0; i < REISERFS_MAXQUOTAS; i++) {
 		if (sb_dqopt(s)->files[i] && quota_enabled[i])
 			dquot_quota_off(s, i);
 	}
@@ -1360,7 +1360,7 @@ static void handle_quota_files(struct super_block *s, char **qf_names,
 {
 	int i;
 
-	for (i = 0; i < MAXQUOTAS; i++) {
+	for (i = 0; i < REISERFS_MAXQUOTAS; i++) {
 		if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i])
 			kfree(REISERFS_SB(s)->s_qf_names[i]);
 		REISERFS_SB(s)->s_qf_names[i] = qf_names[i];
@@ -1381,7 +1381,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
 	struct reiserfs_journal *journal = SB_JOURNAL(s);
 	char *new_opts = kstrdup(arg, GFP_KERNEL);
 	int err;
-	char *qf_names[MAXQUOTAS];
+	char *qf_names[REISERFS_MAXQUOTAS];
 	unsigned int qfmt = 0;
 #ifdef CONFIG_QUOTA
 	int i;
@@ -1400,7 +1400,7 @@ static int reiserfs_remount(struct super_block *s, int *mount_flags, char *arg)
 	    (s, arg, &mount_options, &blocks, NULL, &commit_max_age,
 	    qf_names, &qfmt)) {
 #ifdef CONFIG_QUOTA
-		for (i = 0; i < MAXQUOTAS; i++)
+		for (i = 0; i < REISERFS_MAXQUOTAS; i++)
 			if (qf_names[i] != REISERFS_SB(s)->s_qf_names[i])
 				kfree(qf_names[i]);
 #endif
@@ -1844,7 +1844,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
 	char *jdev_name;
 	struct reiserfs_sb_info *sbi;
 	int errval = -EINVAL;
-	char *qf_names[MAXQUOTAS] = {};
+	char *qf_names[REISERFS_MAXQUOTAS] = {};
 	unsigned int qfmt = 0;
 
 	save_mount_options(s, data);
@@ -2169,7 +2169,7 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
 #ifdef CONFIG_QUOTA
 	{
 		int j;
-		for (j = 0; j < MAXQUOTAS; j++)
+		for (j = 0; j < REISERFS_MAXQUOTAS; j++)
 			kfree(qf_names[j]);
 	}
 #endif

fs/udf/file.c

@@ -223,11 +223,18 @@ long udf_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 
 static int udf_release_file(struct inode *inode, struct file *filp)
 {
-	if (filp->f_mode & FMODE_WRITE) {
+	if (filp->f_mode & FMODE_WRITE &&
+	    atomic_read(&inode->i_writecount) > 1) {
+		/*
+		 * Grab i_mutex to avoid races with writes changing i_size
+		 * while we are running.
+		 */
+		mutex_lock(&inode->i_mutex);
 		down_write(&UDF_I(inode)->i_data_sem);
 		udf_discard_prealloc(inode);
 		udf_truncate_tail_extent(inode);
 		up_write(&UDF_I(inode)->i_data_sem);
+		mutex_unlock(&inode->i_mutex);
 	}
 	return 0;
 }

fs/udf/inode.c

@@ -1277,7 +1277,7 @@ int udf_setsize(struct inode *inode, loff_t newsize)
  */
 #define UDF_MAX_ICB_NESTING 1024
 
-static int udf_read_inode(struct inode *inode)
+static int udf_read_inode(struct inode *inode, bool hidden_inode)
 {
 	struct buffer_head *bh = NULL;
 	struct fileEntry *fe;
@@ -1436,8 +1436,11 @@ static int udf_read_inode(struct inode *inode)
 
 	link_count = le16_to_cpu(fe->fileLinkCount);
 	if (!link_count) {
-		ret = -ESTALE;
-		goto out;
+		if (!hidden_inode) {
+			ret = -ESTALE;
+			goto out;
+		}
+		link_count = 1;
 	}
 	set_nlink(inode, link_count);
 
@@ -1826,7 +1829,8 @@ static int udf_update_inode(struct inode *inode, int do_sync)
 	return err;
 }
 
-struct inode *udf_iget(struct super_block *sb, struct kernel_lb_addr *ino)
+struct inode *__udf_iget(struct super_block *sb, struct kernel_lb_addr *ino,
+			 bool hidden_inode)
 {
 	unsigned long block = udf_get_lb_pblock(sb, ino, 0);
 	struct inode *inode = iget_locked(sb, block);
@@ -1839,7 +1843,7 @@ struct inode *udf_iget(struct super_block *sb, struct kernel_lb_addr *ino)
 		return inode;
 
 	memcpy(&UDF_I(inode)->i_location, ino, sizeof(struct kernel_lb_addr));
-	err = udf_read_inode(inode);
+	err = udf_read_inode(inode, hidden_inode);
 	if (err < 0) {
 		iget_failed(inode);
 		return ERR_PTR(err);

fs/udf/super.c

@@ -959,7 +959,7 @@ struct inode *udf_find_metadata_inode_efe(struct super_block *sb,
 	addr.logicalBlockNum = meta_file_loc;
 	addr.partitionReferenceNum = partition_num;
 
-	metadata_fe = udf_iget(sb, &addr);
+	metadata_fe = udf_iget_special(sb, &addr);
 
 	if (IS_ERR(metadata_fe)) {
 		udf_warn(sb, "metadata inode efe not found\n");
@@ -1020,7 +1020,7 @@ static int udf_load_metadata_files(struct super_block *sb, int partition)
 		udf_debug("Bitmap file location: block = %d part = %d\n",
 			  addr.logicalBlockNum, addr.partitionReferenceNum);
 
-		fe = udf_iget(sb, &addr);
+		fe = udf_iget_special(sb, &addr);
 		if (IS_ERR(fe)) {
 			if (sb->s_flags & MS_RDONLY)
 				udf_warn(sb, "bitmap inode efe not found but it's ok since the disc is mounted read-only\n");
@@ -1119,7 +1119,7 @@ static int udf_fill_partdesc_info(struct super_block *sb,
 		};
 		struct inode *inode;
 
-		inode = udf_iget(sb, &loc);
+		inode = udf_iget_special(sb, &loc);
 		if (IS_ERR(inode)) {
 			udf_debug("cannot load unallocSpaceTable (part %d)\n",
 				  p_index);
@@ -1154,7 +1154,7 @@ static int udf_fill_partdesc_info(struct super_block *sb,
 		};
 		struct inode *inode;
 
-		inode = udf_iget(sb, &loc);
+		inode = udf_iget_special(sb, &loc);
 		if (IS_ERR(inode)) {
 			udf_debug("cannot load freedSpaceTable (part %d)\n",
 				  p_index);
@@ -1198,7 +1198,7 @@ static void udf_find_vat_block(struct super_block *sb, int p_index,
 	     vat_block >= map->s_partition_root &&
 	     vat_block >= start_block - 3; vat_block--) {
 		ino.logicalBlockNum = vat_block - map->s_partition_root;
-		inode = udf_iget(sb, &ino);
+		inode = udf_iget_special(sb, &ino);
 		if (!IS_ERR(inode)) {
 			sbi->s_vat_inode = inode;
 			break;

fs/udf/udfdecl.h

@@ -138,7 +138,18 @@ extern int udf_write_fi(struct inode *inode, struct fileIdentDesc *,
 /* file.c */
 extern long udf_ioctl(struct file *, unsigned int, unsigned long);
 /* inode.c */
-extern struct inode *udf_iget(struct super_block *, struct kernel_lb_addr *);
+extern struct inode *__udf_iget(struct super_block *, struct kernel_lb_addr *,
+				bool hidden_inode);
+static inline struct inode *udf_iget_special(struct super_block *sb,
+					     struct kernel_lb_addr *ino)
+{
+	return __udf_iget(sb, ino, true);
+}
+static inline struct inode *udf_iget(struct super_block *sb,
+				     struct kernel_lb_addr *ino)
+{
+	return __udf_iget(sb, ino, false);
+}
 extern int udf_expand_file_adinicb(struct inode *);
 extern struct buffer_head *udf_expand_dir_adinicb(struct inode *, int *, int *);
 extern struct buffer_head *udf_bread(struct inode *, int, int, int *);

fs/udf/udftime.c

@@ -81,8 +81,6 @@ static time_t year_seconds[MAX_YEAR_SECONDS] = {
 /*2038*/ SPY(68, 17, 0)
 };
 
-extern struct timezone sys_tz;
-
 #define SECS_PER_HOUR	(60 * 60)
 #define SECS_PER_DAY	(SECS_PER_HOUR * 24)