• Dan Streetman's avatar
    zpool: remove zpool_evict() · 479305fd
    Dan Streetman authored
    Remove zpool_evict() helper function.  As zbud is currently the only
    zpool implementation that supports eviction, add zpool and zpool_ops
    references to struct zbud_pool and directly call zpool_ops->evict(zpool,
    handle) on eviction.
    
    Currently zpool provides the zpool_evict helper which locks the zpool
    list lock and searches through all pools to find the specific one
    matching the caller, and call the corresponding zpool_ops->evict
    function.  However, this is unnecessary, as the zbud pool can simply
    keep a reference to the zpool that created it, as well as the zpool_ops,
    and directly call the zpool_ops->evict function, when it needs to evict
    a page.  This avoids a spinlock and list search in zpool for each
    eviction.
    Signed-off-by: default avatarDan Streetman <ddstreet@ieee.org>
    Cc: Seth Jennings <sjennings@variantweb.net>
    Cc: Minchan Kim <minchan@kernel.org>
    Cc: Nitin Gupta <ngupta@vflare.org>
    Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
    Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
    479305fd
zbud.c 18.2 KB