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Commit 206f6d55 authored by Wang Shilong's avatar Wang Shilong Committed by Theodore Ts'o
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ext4: mark inode bitmap corrupted when found 



There are still some cases that we missed to set
block bitmaps corrupted bit properly:

1)inode bitmap number is wrong.
2)failed to read block bitmap due to disk errors.
3)double allocations from bitmap

Also remove a duplicated call ext4_error() afer
ext4_read_inode_bitmap(), as ext4_error() have been
called inside ext4_read_inode_bitmap() properly.

Signed-off-by: default avatarWang Shilong <wshilong@ddn.com>
Signed-off-by: default avatarTheodore Ts'o <tytso@mit.edu>
Reviewed-by: default avatarAndreas Dilger <adilger@dilger.ca>
parent db79e6d1

fs/ext4/ialloc.c

+9 −4
Original line number Diff line number Diff line
@@ -129,6 +129,8 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group) 
	    (bitmap_blk >= ext4_blocks_count(sbi->s_es))) {

		ext4_error(sb, "Invalid inode bitmap blk %llu in "

			   "block_group %u", bitmap_blk, block_group);

		ext4_mark_group_bitmap_corrupted(sb, block_group,

					EXT4_GROUP_INFO_IBITMAP_CORRUPT);

		return ERR_PTR(-EFSCORRUPTED);

	}

	bh = sb_getblk(sb, bitmap_blk);
@@ -183,6 +185,8 @@ ext4_read_inode_bitmap(struct super_block *sb, ext4_group_t block_group) 
		ext4_error(sb, "Cannot read inode bitmap - "

			   "block_group = %u, inode_bitmap = %llu",

			   block_group, bitmap_blk);

		ext4_mark_group_bitmap_corrupted(sb, block_group,

				EXT4_GROUP_INFO_IBITMAP_CORRUPT);

		return ERR_PTR(-EIO);

	}
@@ -902,6 +906,8 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, 
		if (group == 0 && (ino + 1) < EXT4_FIRST_INO(sb)) {

			ext4_error(sb, "reserved inode found cleared - "

				   "inode=%lu", ino + 1);

			ext4_mark_group_bitmap_corrupted(sb, group,

					EXT4_GROUP_INFO_IBITMAP_CORRUPT);

			goto next_group;

		}
@@ -1093,6 +1099,8 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir, 
		err = -EIO;

		ext4_error(sb, "failed to insert inode %lu: doubly allocated?",

			   inode->i_ino);

		ext4_mark_group_bitmap_corrupted(sb, group,

					EXT4_GROUP_INFO_IBITMAP_CORRUPT);

		goto out;

	}

	inode->i_generation = prandom_u32();
@@ -1194,11 +1202,8 @@ struct inode *ext4_orphan_get(struct super_block *sb, unsigned long ino) 
	block_group = (ino - 1) / EXT4_INODES_PER_GROUP(sb);

	bit = (ino - 1) % EXT4_INODES_PER_GROUP(sb);

	bitmap_bh = ext4_read_inode_bitmap(sb, block_group);

	if (IS_ERR(bitmap_bh)) {

		ext4_error(sb, "inode bitmap error %ld for orphan %lu",

			   ino, PTR_ERR(bitmap_bh));

	if (IS_ERR(bitmap_bh))

		return (struct inode *) bitmap_bh;

	}



	/* Having the inode bit set should be a 100% indicator that this

	 * is a valid orphan (no e2fsck run on fs).  Orphans also include