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Rebase master to b121

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This commit is contained in:
Brian Behlendorf
2009-08-18 11:43:27 -07:00
parent 9babb37438
commit 45d1cae3b8
64 changed files with 3006 additions and 812 deletions
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module/zfs/zap_micro.c
+23 -23
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@@ -1068,7 +1068,7 @@ zap_get_stats(objset_t *os, uint64_t zapobj, zap_stats_t *zs)
int
zap_count_write(objset_t *os, uint64_t zapobj, const char *name, int add,
uint64_t *towrite, uint64_t *tooverwrite, uint64_t dn_datablkshift)
uint64_t *towrite, uint64_t *tooverwrite)
{
zap_t *zap;
int err = 0;
@@ -1113,28 +1113,28 @@ zap_count_write(objset_t *os, uint64_t zapobj, const char *name, int add,
*towrite += (3 + (add ? 4 : 0)) * SPA_MAXBLOCKSIZE;
}
} else {
if (!add) {
if (dmu_buf_freeable(zap->zap_dbuf))
*tooverwrite += SPA_MAXBLOCKSIZE;
else
*towrite += SPA_MAXBLOCKSIZE;
} else {
/*
* We are here if we are adding and (name != NULL).
* It is hard to find out if this add will promote this
* microzap to fatzap. Hence, we assume the worst case
* and account for the blocks assuming this microzap
* would be promoted to a fatzap.
*
* 1 block overwritten : header block
* 4 new blocks written : 2 new split leaf, 2 grown
* ptrtbl blocks
*/
if (dmu_buf_freeable(zap->zap_dbuf))
*tooverwrite += 1 << dn_datablkshift;
else
*towrite += 1 << dn_datablkshift;
*towrite += 4 << dn_datablkshift;
/*
* We are here if (name != NULL) and this is a micro-zap.
* We account for the header block depending on whether it
* is freeable.
*
* Incase of an add-operation it is hard to find out
* if this add will promote this microzap to fatzap.
* Hence, we consider the worst case and account for the
* blocks assuming this microzap would be promoted to a
* fatzap.
*
* 1 block overwritten : header block
* 4 new blocks written : 2 new split leaf, 2 grown
* ptrtbl blocks
*/
if (dmu_buf_freeable(zap->zap_dbuf))
*tooverwrite += SPA_MAXBLOCKSIZE;
else
*towrite += SPA_MAXBLOCKSIZE;
if (add) {
*towrite += 4 * SPA_MAXBLOCKSIZE;
}
}