From: Lukas Czerner lczerner@redhat.com
stable inclusion from stable-v5.10.150 commit 0e1764ad71abca735418fd596a82067074b59687 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I6D0XA
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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commit 50f094a5580e6297bf10a807d16f0ee23fa576cf upstream.
ea_inodes are using i_version for storing part of the reference count so we really need to leave it alone.
The problem can be reproduced by xfstest ext4/026 when iversion is enabled. Fix it by not calling inode_inc_iversion() for EXT4_EA_INODE_FL inodes in ext4_mark_iloc_dirty().
Cc: stable@kernel.org Signed-off-by: Lukas Czerner lczerner@redhat.com Reviewed-by: Jan Kara jack@suse.cz Reviewed-by: Jeff Layton jlayton@kernel.org Reviewed-by: Christian Brauner (Microsoft) brauner@kernel.org Link: https://lore.kernel.org/r/20220824160349.39664-1-lczerner@redhat.com Signed-off-by: Theodore Ts'o tytso@mit.edu Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Jialin Zhang zhangjialin11@huawei.com --- fs/ext4/inode.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index fe2e81737ff1..91e3c112d0f3 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -5753,7 +5753,12 @@ int ext4_mark_iloc_dirty(handle_t *handle, } ext4_fc_track_inode(handle, inode);
- if (IS_I_VERSION(inode)) + /* + * ea_inodes are using i_version for storing reference count, don't + * mess with it + */ + if (IS_I_VERSION(inode) && + !(EXT4_I(inode)->i_flags & EXT4_EA_INODE_FL)) inode_inc_iversion(inode);
/* the do_update_inode consumes one bh->b_count */