• Aristeu Rozanski's avatar
    xattr: extract simple_xattr code from tmpfs · 38f38657
    Aristeu Rozanski authored
    Extract in-memory xattr APIs from tmpfs. Will be used by cgroup.
    
    $ size vmlinux.o
       text    data     bss     dec     hex filename
    4658782  880729 5195032 10734543         a3cbcf vmlinux.o
    $ size vmlinux.o
       text    data     bss     dec     hex filename
    4658957  880729 5195032 10734718         a3cc7e vmlinux.o
    
    v7:
    - checkpatch warnings fixed
    - Implement the changes requested by Hugh Dickins:
    	- make simple_xattrs_init and simple_xattrs_free inline
    	- get rid of locking and list reinitialization in simple_xattrs_free,
    	  they're not needed
    v6:
    - no changes
    v5:
    - no changes
    v4:
    - move simple_xattrs_free() to fs/xattr.c
    v3:
    - in kmem_xattrs_free(), reinitialize the list
    - use simple_xattr_* prefix
    - introduce simple_xattr_add() to prevent direct list usage
    Original-patch-by: default avatarLi Zefan <lizefan@huawei.com>
    Cc: Li Zefan <lizefan@huawei.com>
    Cc: Hillf Danton <dhillf@gmail.com>
    Cc: Lennart Poettering <lpoetter@redhat.com>
    Acked-by: default avatarHugh Dickins <hughd@google.com>
    Signed-off-by: default avatarLi Zefan <lizefan@huawei.com>
    Signed-off-by: default avatarAristeu Rozanski <aris@redhat.com>
    Signed-off-by: default avatarTejun Heo <tj@kernel.org>
    38f38657
shmem.c 74 KB