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Linux 3.0 compat, shrinker compatibility

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To accomindate the updated Linux 3.0 shrinker API the spl
shrinker compatibility code was updated.  Unfortunately, this
couldn't be done cleanly without slightly adjusting the comapt
API.  See spl commit a55bcaad18.

This commit updates the ZFS code to use the slightly modified
API.  You must use the latest SPL if your building ZFS.
This commit is contained in:
Brian Behlendorf 2011-06-21 14:26:51 -07:00
parent b00131d43c
commit 7e7baecaa3
1 changed files with 5 additions and 3 deletions
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8
module/zfs/arc.c
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@ -2191,7 +2191,8 @@ arc_reclaim_thread(void)
* direct reclaim will be trigger. In direct reclaim a more aggressive * direct reclaim will be trigger. In direct reclaim a more aggressive
* strategy is used, data is evicted from the ARC and free slabs reaped. * strategy is used, data is evicted from the ARC and free slabs reaped.
*/ */
SPL_SHRINKER_CALLBACK_PROTO(arc_shrinker_func, cb, nr_to_scan, gfp_mask) static int
__arc_shrinker_func(struct shrinker *shrink, struct shrink_control *sc)
{ {
arc_reclaim_strategy_t strategy; arc_reclaim_strategy_t strategy;
int arc_reclaim; int arc_reclaim;
@ -2199,7 +2200,7 @@ SPL_SHRINKER_CALLBACK_PROTO(arc_shrinker_func, cb, nr_to_scan, gfp_mask)
/* Return number of reclaimable pages based on arc_shrink_shift */ /* Return number of reclaimable pages based on arc_shrink_shift */
arc_reclaim = MAX(btop(((int64_t)arc_size - (int64_t)arc_c_min)) arc_reclaim = MAX(btop(((int64_t)arc_size - (int64_t)arc_c_min))
>> arc_shrink_shift, 0); >> arc_shrink_shift, 0);
if (nr_to_scan == 0) if (sc->nr_to_scan == 0)
return (arc_reclaim); return (arc_reclaim);
/* Prevent reclaim below arc_c_min */ /* Prevent reclaim below arc_c_min */
@ -2207,7 +2208,7 @@ SPL_SHRINKER_CALLBACK_PROTO(arc_shrinker_func, cb, nr_to_scan, gfp_mask)
return (-1); return (-1);
/* Not allowed to perform filesystem reclaim */ /* Not allowed to perform filesystem reclaim */
if (!(gfp_mask & __GFP_FS)) if (!(sc->gfp_mask & __GFP_FS))
return (-1); return (-1);
/* Reclaim in progress */ /* Reclaim in progress */
@ -2229,6 +2230,7 @@ SPL_SHRINKER_CALLBACK_PROTO(arc_shrinker_func, cb, nr_to_scan, gfp_mask)
return (arc_reclaim); return (arc_reclaim);
} }
SPL_SHRINKER_CALLBACK_WRAPPER(arc_shrinker_func);
SPL_SHRINKER_DECLARE(arc_shrinker, arc_shrinker_func, DEFAULT_SEEKS); SPL_SHRINKER_DECLARE(arc_shrinker, arc_shrinker_func, DEFAULT_SEEKS);
#endif /* _KERNEL */ #endif /* _KERNEL */