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Rename hole_birth tunable to match OpenZFS
OpenZFS decided that ignore_hole_birth was too imprecise and incorrect a name (and went with send_holes_without_birth_time). Rename it in ZoL too, while keeping the name "ignore_hole_birth" pointing to the same variable for existing consumers. Reviewed-by: Giuseppe Di Natale <dinatale2@llnl.gov> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Rich Ercolani <rincebrain@gmail.com> Closes #5239
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@ -39,7 +39,7 @@
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#include <sys/zfeature.h>
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int32_t zfs_pd_bytes_max = 50 * 1024 * 1024; /* 50MB */
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int32_t ignore_hole_birth = 1;
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int32_t send_holes_without_birth_time = 1;
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typedef struct prefetch_data {
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kmutex_t pd_mtx;
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@ -252,9 +252,10 @@ traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
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*
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* Note that the meta-dnode cannot be reallocated.
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*/
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if (!ignore_hole_birth && (!td->td_realloc_possible ||
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zb->zb_object == DMU_META_DNODE_OBJECT) &&
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td->td_hole_birth_enabled_txg <= td->td_min_txg)
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if (!send_holes_without_birth_time &&
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(!td->td_realloc_possible ||
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zb->zb_object == DMU_META_DNODE_OBJECT) &&
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td->td_hole_birth_enabled_txg <= td->td_min_txg)
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return (0);
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} else if (bp->blk_birth <= td->td_min_txg) {
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return (0);
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@ -729,6 +730,11 @@ EXPORT_SYMBOL(traverse_pool);
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module_param(zfs_pd_bytes_max, int, 0644);
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MODULE_PARM_DESC(zfs_pd_bytes_max, "Max number of bytes to prefetch");
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module_param(ignore_hole_birth, int, 0644);
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MODULE_PARM_DESC(ignore_hole_birth, "Ignore hole_birth txg for send");
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module_param_named(ignore_hole_birth, send_holes_without_birth_time, int, 0644);
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MODULE_PARM_DESC(ignore_hole_birth, "Alias for send_holes_without_birth_time");
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module_param_named(send_holes_without_birth_time,
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send_holes_without_birth_time, int, 0644);
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MODULE_PARM_DESC(send_holes_without_birth_time,
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"Ignore hole_birth txg for zfs send");
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#endif
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