Commit 6a8098a4 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4 

Pull ext4 fixes from Ted Ts'o:
 "Fix a number of ext4 bugs; the most serious of which is a bug in the
  lazytime mount optimization code where we could end up updating the
  timestamps to the wrong inode"

* tag 'for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix an ext3 collapse range regression in xfstests
  jbd2: fix r_count overflows leading to buffer overflow in journal recovery
  ext4: check for zero length extent explicitly
  ext4: fix NULL pointer dereference when journal restart fails
  ext4: remove unused function prototype from ext4.h
  ext4: don't save the error information if the block device is read-only
  ext4: fix lazytime optimization
parents c7309e88 b9576fc3

fs/ext4/ext4.h

+0 −1
Original line number Diff line number Diff line
@@ -2889,7 +2889,6 @@ extern int ext4_map_blocks(handle_t *handle, struct inode *inode, 
			   struct ext4_map_blocks *map, int flags);

extern int ext4_ext_calc_metadata_amount(struct inode *inode,

					 ext4_lblk_t lblocks);

extern int ext4_extent_tree_init(handle_t *, struct inode *);

extern int ext4_ext_calc_credits_for_single_extent(struct inode *inode,

						   int num,

						   struct ext4_ext_path *path);

fs/ext4/ext4_jbd2.c

+6 −0
Original line number Diff line number Diff line
@@ -87,6 +87,12 @@ int __ext4_journal_stop(const char *where, unsigned int line, handle_t *handle) 
		ext4_put_nojournal(handle);

		return 0;

	}



	if (!handle->h_transaction) {

		err = jbd2_journal_stop(handle);

		return handle->h_err ? handle->h_err : err;

	}



	sb = handle->h_transaction->t_journal->j_private;

	err = handle->h_err;

	rc = jbd2_journal_stop(handle);

fs/ext4/extents.c

+9 −1
Original line number Diff line number Diff line
@@ -377,7 +377,7 @@ static int ext4_valid_extent(struct inode *inode, struct ext4_extent *ext) 
	ext4_lblk_t lblock = le32_to_cpu(ext->ee_block);

	ext4_lblk_t last = lblock + len - 1;



	if (lblock > last)

	if (len == 0 || lblock > last)

		return 0;

	return ext4_data_block_valid(EXT4_SB(inode->i_sb), block, len);

}
@@ -5396,6 +5396,14 @@ int ext4_collapse_range(struct inode *inode, loff_t offset, loff_t len) 
	loff_t new_size, ioffset;

	int ret;



	/*

	 * We need to test this early because xfstests assumes that a

	 * collapse range of (0, 1) will return EOPNOTSUPP if the file

	 * system does not support collapse range.

	 */

	if (!ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))

		return -EOPNOTSUPP;



	/* Collapse range works only on fs block size aligned offsets. */

	if (offset & (EXT4_CLUSTER_SIZE(sb) - 1) ||

	    len & (EXT4_CLUSTER_SIZE(sb) - 1))

fs/ext4/inode.c

+1 −1
Original line number Diff line number Diff line
@@ -4345,7 +4345,7 @@ static void ext4_update_other_inodes_time(struct super_block *sb, 
	int inode_size = EXT4_INODE_SIZE(sb);



	oi.orig_ino = orig_ino;

	ino = orig_ino & ~(inodes_per_block - 1);

	ino = (orig_ino & ~(inodes_per_block - 1)) + 1;

	for (i = 0; i < inodes_per_block; i++, ino++, buf += inode_size) {

		if (ino == orig_ino)

			continue;

fs/ext4/super.c

+2 −0
Original line number Diff line number Diff line
@@ -294,6 +294,8 @@ static void __save_error_info(struct super_block *sb, const char *func, 
	struct ext4_super_block *es = EXT4_SB(sb)->s_es;



	EXT4_SB(sb)->s_mount_state |= EXT4_ERROR_FS;

	if (bdev_read_only(sb->s_bdev))

		return;

	es->s_state |= cpu_to_le16(EXT4_ERROR_FS);

	es->s_last_error_time = cpu_to_le32(get_seconds());

	strncpy(es->s_last_error_func, func, sizeof(es->s_last_error_func));

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