• Dan Magenheimer's avatar
    ext4: add cleancache support · 7abc52c2
    Dan Magenheimer authored
    This seventh patch of eight in this cleancache series "opts-in"
    cleancache for ext4.  Filesystems must explicitly enable cleancache
    by calling cleancache_init_fs anytime an instance of the filesystem
    is mounted. For ext4, all other cleancache hooks are in
    the VFS layer including the matching cleancache_flush_fs
    hook which must be called on unmount.
    
    Details and a FAQ can be found in Documentation/vm/cleancache.txt
    
    [v6-v8: no changes]
    [v5: jeremy@goop.org: simplify init hook and any future fs init changes]
    Signed-off-by: default avatarDan Magenheimer <dan.magenheimer@oracle.com>
    Reviewed-by: default avatarJeremy Fitzhardinge <jeremy@goop.org>
    Reviewed-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
    Acked-by: default avatarAndreas Dilger <adilger@sun.com>
    Cc: Ted Ts'o <tytso@mit.edu>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Al Viro <viro@ZenIV.linux.org.uk>
    Cc: Matthew Wilcox <matthew@wil.cx>
    Cc: Nick Piggin <npiggin@kernel.dk>
    Cc: Mel Gorman <mel@csn.ul.ie>
    Cc: Rik Van Riel <riel@redhat.com>
    Cc: Jan Beulich <JBeulich@novell.com>
    Cc: Chris Mason <chris.mason@oracle.com>
    Cc: Mark Fasheh <mfasheh@suse.com>
    Cc: Joel Becker <joel.becker@oracle.com>
    Cc: Nitin Gupta <ngupta@vflare.org>
    7abc52c2
super.c 135 KB