c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

spa_misc: add an API for spa_namespace_lock

Browse Source 
This is useful as debugging support, as it lets namespace lock
operations be traced directly. It will also be useful for future work to
reduce the use of spa_namespace_lock, traditionally a source of
difficult deadlocks.

Sponsored-by: Klara, Inc.
Sponsored-by: Wasabi Technology, Inc.
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Closes #17906
This commit is contained in:
Rob Norris
2025-11-11 09:23:39 +11:00
committed by GitHub
parent 8aaed7dc42
commit 6e12f0bd77
21 changed files with 260 additions and 204 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/spa.h
+9 -5
View File
@@ -29,7 +29,7 @@
* Copyright 2017 Joyent, Inc.
* Copyright (c) 2017, Intel Corporation.
* Copyright (c) 2019, Allan Jude
* Copyright (c) 2019, Klara Inc.
* Copyright (c) 2019, 2025, Klara, Inc.
* Copyright (c) 2019, Datto Inc.
*/
@@ -867,10 +867,14 @@ uint_t spa_acq_allocator(spa_t *spa);
void spa_rel_allocator(spa_t *spa, uint_t allocator);
void spa_select_allocator(zio_t *zio);
/* spa namespace global mutex */
extern kmutex_t spa_namespace_lock;
extern avl_tree_t spa_namespace_avl;
extern kcondvar_t spa_namespace_cv;
/* spa namespace global lock */
extern void spa_namespace_enter(const void *tag);
extern boolean_t spa_namespace_tryenter(const void *tag);
extern int spa_namespace_enter_interruptible(const void *tag);
extern void spa_namespace_exit(const void *tag);
extern boolean_t spa_namespace_held(void);
extern void spa_namespace_wait(void);
extern void spa_namespace_broadcast(void);
/*
* SPA configuration functions in spa_config.c