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Rename hole_birth tunable to match OpenZFS

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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
This commit is contained in:
Brian Behlendorf 2016-10-07 21:02:24 -07:00 committed by GitHub
parent 4770aa0643
commit 690fe6479e
1 changed files with 12 additions and 6 deletions
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18
module/zfs/dmu_traverse.c
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@ -39,7 +39,7 @@
#include <sys/zfeature.h> #include <sys/zfeature.h>
int32_t zfs_pd_bytes_max = 50 * 1024 * 1024; /* 50MB */ int32_t zfs_pd_bytes_max = 50 * 1024 * 1024; /* 50MB */
int32_t ignore_hole_birth = 1; int32_t send_holes_without_birth_time = 1;
typedef struct prefetch_data { typedef struct prefetch_data {
kmutex_t pd_mtx; kmutex_t pd_mtx;
@ -252,9 +252,10 @@ traverse_visitbp(traverse_data_t *td, const dnode_phys_t *dnp,
* *
* Note that the meta-dnode cannot be reallocated. * Note that the meta-dnode cannot be reallocated.
*/ */
if (!ignore_hole_birth && (!td->td_realloc_possible || if (!send_holes_without_birth_time &&
zb->zb_object == DMU_META_DNODE_OBJECT) && (!td->td_realloc_possible ||
td->td_hole_birth_enabled_txg <= td->td_min_txg) zb->zb_object == DMU_META_DNODE_OBJECT) &&
td->td_hole_birth_enabled_txg <= td->td_min_txg)
return (0); return (0);
} else if (bp->blk_birth <= td->td_min_txg) { } else if (bp->blk_birth <= td->td_min_txg) {
return (0); return (0);
@ -729,6 +730,11 @@ EXPORT_SYMBOL(traverse_pool);
module_param(zfs_pd_bytes_max, int, 0644); module_param(zfs_pd_bytes_max, int, 0644);
MODULE_PARM_DESC(zfs_pd_bytes_max, "Max number of bytes to prefetch"); MODULE_PARM_DESC(zfs_pd_bytes_max, "Max number of bytes to prefetch");
module_param(ignore_hole_birth, int, 0644); module_param_named(ignore_hole_birth, send_holes_without_birth_time, int, 0644);
MODULE_PARM_DESC(ignore_hole_birth, "Ignore hole_birth txg for send"); MODULE_PARM_DESC(ignore_hole_birth, "Alias for send_holes_without_birth_time");
module_param_named(send_holes_without_birth_time,
send_holes_without_birth_time, int, 0644);
MODULE_PARM_DESC(send_holes_without_birth_time,
"Ignore hole_birth txg for zfs send");
#endif #endif