• Dan Magenheimer's avatar
    btrfs: add cleancache support · 90a887c9
    Dan Magenheimer authored
    This sixth patch of eight in this cleancache series "opts-in"
    cleancache for btrfs.  Filesystems must explicitly enable
    cleancache by calling cleancache_init_fs anytime an instance
    of the filesystem is mounted.  Btrfs uses its own readpage
    which must be hooked, but 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>
    Signed-off-by: default avatarChris Mason <chris.mason@oracle.com>
    Reviewed-by: default avatarJeremy Fitzhardinge <jeremy@goop.org>
    Reviewed-by: default avatarKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
    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: Andreas Dilger <adilger@sun.com>
    Cc: Ted Ts'o <tytso@mit.edu>
    Cc: Mark Fasheh <mfasheh@suse.com>
    Cc: Joel Becker <joel.becker@oracle.com>
    Cc: Nitin Gupta <ngupta@vflare.org>
    90a887c9
super.c 30.9 KB