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Merge branch 'fix-metaslab' into refs/top-bases/fix-branch

This commit is contained in:
Brian Behlendorf 2010-06-14 16:40:45 -07:00
parent f3f44cbd31 f3a61f709d
commit 963518b20f
1 changed files with 20 additions and 0 deletions
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20
module/zfs/metaslab.c
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@ -30,6 +30,8 @@
#include <sys/vdev_impl.h>
#include <sys/zio.h>
#define WITH_NDF_BLOCK_ALLOCATOR
uint64_t metaslab_aliquot = 512ULL << 10;
uint64_t metaslab_gang_bang = SPA_MAXBLOCKSIZE + 1; /* force gang blocks */
@ -350,6 +352,9 @@ metaslab_segsize_compare(const void *x1, const void *x2)
return (0);
}
#if defined(WITH_FF_BLOCK_ALLOCATOR) || \
defined(WITH_DF_BLOCK_ALLOCATOR) || \
defined(WITH_CDF_BLOCK_ALLOCATOR)
/*
* This is a helper function that can be used by the allocator to find
* a suitable block to allocate. This will search the specified AVL
@ -389,6 +394,7 @@ metaslab_block_picker(avl_tree_t *t, uint64_t *cursor, uint64_t size,
*cursor = 0;
return (metaslab_block_picker(t, cursor, size, align));
}
#endif /* WITH_FF/DF/CDF_BLOCK_ALLOCATOR */
static void
metaslab_pp_load(space_map_t *sm)
@ -452,6 +458,7 @@ metaslab_pp_maxsize(space_map_t *sm)
return (ss->ss_end - ss->ss_start);
}
#if defined(WITH_FF_BLOCK_ALLOCATOR)
/*
* ==========================================================================
* The first-fit block allocator
@ -484,6 +491,10 @@ static space_map_ops_t metaslab_ff_ops = {
metaslab_ff_fragmented
};
space_map_ops_t *zfs_metaslab_ops = &metaslab_ff_ops;
#endif /* WITH_FF_BLOCK_ALLOCATOR */
#if defined(WITH_DF_BLOCK_ALLOCATOR)
/*
* ==========================================================================
* Dynamic block allocator -
@ -543,11 +554,15 @@ static space_map_ops_t metaslab_df_ops = {
metaslab_df_fragmented
};
space_map_ops_t *zfs_metaslab_ops = &metaslab_df_ops;
#endif /* WITH_DF_BLOCK_ALLOCATOR */
/*
* ==========================================================================
* Other experimental allocators
* ==========================================================================
*/
#if defined(WITH_CDF_BLOCK_ALLOCATOR)
static uint64_t
metaslab_cdf_alloc(space_map_t *sm, uint64_t size)
{
@ -607,6 +622,10 @@ static space_map_ops_t metaslab_cdf_ops = {
metaslab_cdf_fragmented
};
space_map_ops_t *zfs_metaslab_ops = &metaslab_cdf_ops;
#endif /* WITH_CDF_BLOCK_ALLOCATOR */
#if defined(WITH_NDF_BLOCK_ALLOCATOR)
uint64_t metaslab_ndf_clump_shift = 4;
static uint64_t
@ -672,6 +691,7 @@ static space_map_ops_t metaslab_ndf_ops = {
};
space_map_ops_t *zfs_metaslab_ops = &metaslab_ndf_ops;
#endif /* WITH_NDF_BLOCK_ALLOCATOR */
/*
* ==========================================================================