• KaiGai Kohei's avatar
    [JFFS2][XATTR] XATTR support on JFFS2 (version. 5) · aa98d7cf
    KaiGai Kohei authored
    
    
    This attached patches provide xattr support including POSIX-ACL and
    SELinux support on JFFS2 (version.5).
    
    There are some significant differences from previous version posted
    at last December.
    The biggest change is addition of EBS(Erase Block Summary) support.
    Currently, both kernel and usermode utility (sumtool) can recognize
    xattr nodes which have JFFS2_NODETYPE_XATTR/_XREF nodetype.
    
    In addition, some bugs are fixed.
    - A potential race condition was fixed.
    - Unexpected fail when updating a xattr by same name/value pair was fixed.
    - A bug when removing xattr name/value pair was fixed.
    
    The fundamental structures (such as using two new nodetypes and exclusion
    mechanism by rwsem) are unchanged. But most of implementation were reviewed
    and updated if necessary.
    Espacially, we had to change several internal implementations related to
    load_xattr_datum() to avoid a potential race condition.
    
    [1/2] xattr_on_jffs2.kernel.version-5.patch
    [2/2] xattr_on_jffs2.utils.version-5.patch
    Signed-off-by: default avatarKaiGai Kohei <kaigai@ak.jp.nec.com>
    Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
    aa98d7cf