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Illumos 5314 - Remove "dbuf phys" db->db_data pointer aliases in ZFS

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5314 Remove "dbuf phys" db->db_data pointer aliases in ZFS
Author: Justin T. Gibbs <justing@spectralogic.com>
Reviewed by: Andriy Gapon <avg@freebsd.org>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Will Andrews <willa@spectralogic.com>
Approved by: Dan McDonald <danmcd@omniti.com>

References:
  https://www.illumos.org/issues/5314
  https://github.com/illumos/illumos-gate/commit/c137962

Ported-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Justin T. Gibbs
2015-04-02 02:14:34 +11:00
committed by Brian Behlendorf
parent 945dd93525
commit d683ddbb72
32 changed files with 914 additions and 808 deletions
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include/sys/dmu.h
+3 -10
View File
@@ -481,12 +481,6 @@ void dmu_buf_rele_array(dmu_buf_t **, int numbufs, void *tag);
*
* user_ptr is for use by the user and can be obtained via dmu_buf_get_user().
*
* user_data_ptr_ptr should be NULL, or a pointer to a pointer which
* will be set to db->db_data when you are allowed to access it. Note
* that db->db_data (the pointer) can change when you do dmu_buf_read(),
* dmu_buf_tryupgrade(), dmu_buf_will_dirty(), or dmu_buf_will_fill().
* *user_data_ptr_ptr will be set to the new value when it changes.
*
* If non-NULL, pageout func will be called when this buffer is being
* excised from the cache, so that you can clean up the data structure
* pointed to by user_ptr.
@@ -494,17 +488,16 @@ void dmu_buf_rele_array(dmu_buf_t **, int numbufs, void *tag);
* dmu_evict_user() will call the pageout func for all buffers in a
* objset with a given pageout func.
*/
void *dmu_buf_set_user(dmu_buf_t *db, void *user_ptr, void *user_data_ptr_ptr,
void *dmu_buf_set_user(dmu_buf_t *db, void *user_ptr,
dmu_buf_evict_func_t *pageout_func);
/*
* set_user_ie is the same as set_user, but request immediate eviction
* when hold count goes to zero.
*/
void *dmu_buf_set_user_ie(dmu_buf_t *db, void *user_ptr,
void *user_data_ptr_ptr, dmu_buf_evict_func_t *pageout_func);
void *dmu_buf_update_user(dmu_buf_t *db_fake, void *old_user_ptr,
void *user_ptr, void *user_data_ptr_ptr,
dmu_buf_evict_func_t *pageout_func);
void *dmu_buf_update_user(dmu_buf_t *db_fake, void *old_user_ptr,
void *user_ptr, dmu_buf_evict_func_t *pageout_func);
void dmu_evict_user(objset_t *os, dmu_buf_evict_func_t *func);
/*