udf: Set i_generation field (470cca56) · Commits · 戴 / test

Currently UDF doesn't initialize i_generation in any way and thus NFS can easily get reallocated inodes from stale file handles. Luckily UDF already has a unique object identifier associated with each inode - i_unique. Use that for initialization of i_generation. Signed-off-by:

Jan Kara <jack@suse.cz>

fs/udf/ialloc.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -95,6 +95,7 @@ struct inode udf_new_inode(struct inode dir, umode_t mode, int *err)
		lvidiu = udf_sb_lvidiu(sb);
		if (lvidiu) {
		iinfo->i_unique = lvid_get_unique_id(sb);
		inode->i_generation = iinfo->i_unique;
		mutex_lock(&sbi->s_alloc_mutex);
		if (S_ISDIR(mode))
		le32_add_cpu(&lvidiu->numDirs, 1);

fs/udf/inode.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -1484,6 +1484,7 @@ reread:
		iinfo->i_lenAlloc = le32_to_cpu(efe->lengthAllocDescs);
		iinfo->i_checkpoint = le32_to_cpu(efe->checkpoint);
		}
		inode->i_generation = iinfo->i_unique;

		switch (fe->icbTag.fileType) {
		case ICBTAG_FILE_TYPE_DIRECTORY:

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