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Merge tag 'for-4.21/block-20190102' of git://git.kernel.dk/linux-block

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Pull more block updates from Jens Axboe:

 - Dead code removal for loop/sunvdc (Chengguang)

 - Mark BIDI support for bsg as deprecated, logging a single dmesg
   warning if anyone is actually using it (Christoph)

 - blkcg cleanup, killing a dead function and making the tryget_closest
   variant easier to read (Dennis)

 - Floppy fixes, one fixing a regression in swim3 (Finn)

 - lightnvm use-after-free fix (Gustavo)

 - gdrom leak fix (Wenwen)

 - a set of drbd updates (Lars, Luc, Nathan, Roland)

* tag 'for-4.21/block-20190102' of git://git.kernel.dk/linux-block: (28 commits)
  block/swim3: Fix regression on PowerBook G3
  block/swim3: Fix -EBUSY error when re-opening device after unmount
  block/swim3: Remove dead return statement
  block/amiflop: Don't log error message on invalid ioctl
  gdrom: fix a memory leak bug
  lightnvm: pblk: fix use-after-free bug
  block: sunvdc: remove redundant code
  block: loop: remove redundant code
  bsg: deprecate BIDI support in bsg
  blkcg: remove unused __blkg_release_rcu()
  blkcg: clean up blkg_tryget_closest()
  drbd: Change drbd_request_detach_interruptible's return type to int
  drbd: Avoid Clang warning about pointless switch statment
  drbd: introduce P_ZEROES (REQ_OP_WRITE_ZEROES on the "wire")
  drbd: skip spurious timeout (ping-timeo) when failing promote
  drbd: don't retry connection if peers do not agree on "authentication" settings
  drbd: fix print_st_err()'s prototype to match the definition
  drbd: avoid spurious self-outdating with concurrent disconnect / down
  drbd: do not block when adjusting "disk-options" while IO is frozen
  drbd: fix comment typos
  ...
This commit is contained in:
Linus Torvalds
2019-01-02 18:49:58 -08:00
parent b79f9f93eb 427c5ce441
commit 77d0b194b2
23 changed files with 468 additions and 132 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
include/linux/blk-cgroup.h
View File

@@ -499,22 +499,33 @@ static inline void blkg_get(struct blkcg_gq *blkg)
*/
static inline bool blkg_tryget(struct blkcg_gq *blkg)
{
return percpu_ref_tryget(&blkg->refcnt);
return blkg && percpu_ref_tryget(&blkg->refcnt);
}
/**
* blkg_tryget_closest - try and get a blkg ref on the closet blkg
* @blkg: blkg to get
*
* This walks up the blkg tree to find the closest non-dying blkg and returns
* the blkg that it did association with as it may not be the passed in blkg.
* This needs to be called rcu protected. As the failure mode here is to walk
* up the blkg tree, this ensure that the blkg->parent pointers are always
* valid. This returns the blkg that it ended up taking a reference on or %NULL
* if no reference was taken.
*/
static inline struct blkcg_gq *blkg_tryget_closest(struct blkcg_gq *blkg)
{
while (blkg && !percpu_ref_tryget(&blkg->refcnt))
blkg = blkg->parent;
struct blkcg_gq *ret_blkg = NULL;
return blkg;
WARN_ON_ONCE(!rcu_read_lock_held());
while (blkg) {
if (blkg_tryget(blkg)) {
ret_blkg = blkg;
break;
}
blkg = blkg->parent;
}
return ret_blkg;
}
/**

2
include/linux/drbd.h
View File

@@ -51,7 +51,7 @@
#endif
extern const char *drbd_buildtag(void);
#define REL_VERSION "8.4.10"
#define REL_VERSION "8.4.11"
#define API_VERSION 1
#define PRO_VERSION_MIN 86
#define PRO_VERSION_MAX 101

5
include/linux/genl_magic_struct.h
View File

@@ -191,6 +191,7 @@ static inline void ct_assert_unique_operations(void)
{
switch (0) {
#include GENL_MAGIC_INCLUDE_FILE
case 0:
;
}
}
@@ -209,6 +210,7 @@ static inline void ct_assert_unique_top_level_attributes(void)
{
switch (0) {
#include GENL_MAGIC_INCLUDE_FILE
case 0:
;
}
}
@@ -218,7 +220,8 @@ static inline void ct_assert_unique_top_level_attributes(void)
static inline void ct_assert_unique_ ## s_name ## _attributes(void) \
{ \
switch (0) { \
s_fields \
s_fields \
case 0: \
; \
} \
}