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ext4: Fix BUG_ON at fs/buffer.c:652 in no journal mode

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Calls to ext4_handle_dirty_metadata should only pass in an inode
pointer for inode-specific metadata, and not for shared metadata
blocks such as inode table blocks, block group descriptors, the
superblock, etc.

The BUG_ON can get tripped when updating a special device (such as a
block device) that is opened (so that i_mapping is set in
fs/block_dev.c) and the file system is mounted in no journal mode.

Addresses-Google-Bug: #2404870

Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
This commit is contained in:
Curt Wohlgemuth
2010-02-16 15:06:29 -05:00
committed by Theodore Ts'o
parent ba869023ea
commit 73b50c1c92
4 changed files with 7 additions and 7 deletions
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6
fs/ext4/inode.c
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@@ -5120,7 +5120,7 @@ static int ext4_do_update_inode(handle_t *handle,
EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
sb->s_dirt = 1;
ext4_handle_sync(handle);
err = ext4_handle_dirty_metadata(handle, inode,
err = ext4_handle_dirty_metadata(handle, NULL,
EXT4_SB(sb)->s_sbh);
}
}
@@ -5149,7 +5149,7 @@ static int ext4_do_update_inode(handle_t *handle,
}
BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
rc = ext4_handle_dirty_metadata(handle, inode, bh);
rc = ext4_handle_dirty_metadata(handle, NULL, bh);
if (!err)
err = rc;
ext4_clear_inode_state(inode, EXT4_STATE_NEW);
@@ -5701,7 +5701,7 @@ static int ext4_pin_inode(handle_t *handle, struct inode *inode)
err = jbd2_journal_get_write_access(handle, iloc.bh);
if (!err)
err = ext4_handle_dirty_metadata(handle,
inode,
NULL,
iloc.bh);
brelse(iloc.bh);
}