Jens Axboe dac56212e8 bio: skip atomic inc/dec of ->bi_cnt for most use cases ...

Struct bio has a reference count that controls when it can be freed.
Most uses cases is allocating the bio, which then returns with a
single reference to it, doing IO, and then dropping that single
reference. We can remove this atomic_dec_and_test() in the completion
path, if nobody else is holding a reference to the bio.

If someone does call bio_get() on the bio, then we flag the bio as
now having valid count and that we must properly honor the reference
count when it's being put.

Tested-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

2015-05-05 13:32:49 -06:00

..

tests

Btrfs: qgroup: cleanup, remove an unsued parameter in btrfs_create_qgroup().

2015-04-13 07:52:44 -07:00

acl.c

…

async-thread.c

btrfs: use correct type for workqueue flags

2015-02-16 18:48:47 +01:00

async-thread.h

btrfs: use correct type for workqueue flags

2015-02-16 18:48:47 +01:00

backref.c

btrfs: use explicit initializer for seq_elem

2015-03-03 17:23:59 +01:00

backref.h

btrfs: cleanup, remove inode_item_info helper

2015-01-14 19:23:47 +01:00

btrfs_inode.h

Btrfs: fix metadata inconsistencies after directory fsync

2015-03-26 17:56:23 -07:00

check-integrity.c

Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1

2015-03-25 10:52:48 -07:00

check-integrity.h

…

compression.c

Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1

2015-03-25 10:52:48 -07:00

compression.h

btrfs: constify structs with op functions or static definitions

2015-02-16 18:48:44 +01:00

ctree.c

Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1

2015-03-25 10:52:48 -07:00

ctree.h

btrfs: Don't allow subvolid >= (1 << BTRFS_QGROUP_LEVEL_SHIFT) to be created

2015-04-13 07:52:54 -07:00

delayed-inode.c

Btrfs: fill ->last_trans for delayed inode in btrfs_fill_inode.

2015-04-26 06:27:03 -07:00

delayed-inode.h

…

delayed-ref.c

Btrfs: account for crcs in delayed ref processing

2015-04-10 14:04:47 -07:00

delayed-ref.h

Btrfs: account for crcs in delayed ref processing

2015-04-10 14:04:47 -07:00

dev-replace.c

btrfs: cleanup 64bit/32bit divs, compile time constants

2015-03-03 17:23:57 +01:00

dev-replace.h

…

dir-item.c

Btrfs: make xattr replace operations atomic

2014-11-20 17:20:07 -08:00

disk-io.c

btrfs: Fix NO_SPACE bug caused by delayed-iput

2015-04-13 07:27:41 -07:00

disk-io.h

Btrfs: disk-io: replace root args iff only fs_info used

2015-02-16 18:48:43 +01:00

export.c

VFS: normal filesystems (and lustre): d_inode() annotations

2015-04-15 15:06:57 -04:00

export.h

…

extent_io.c

Btrfs: btrfs_release_extent_buffer_page didn't free pages of dummy extent

2015-04-29 13:22:09 -07:00

extent_io.h

btrfs: constify structs with op functions or static definitions

2015-02-16 18:48:44 +01:00

extent_map.c

Btrfs: do not move em to modified list when unpinning

2014-11-21 11:59:54 -08:00

extent_map.h

…

extent-tree.c

btrfs: handle ENOMEM in btrfs_alloc_tree_block

2015-04-26 06:27:00 -07:00

file-item.c

Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1

2015-03-25 10:52:48 -07:00

file.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-04-26 17:22:07 -07:00

free-space-cache.c

btrfs: check io_ctl_prepare_pages return in __btrfs_write_out_cache

2015-04-26 06:27:01 -07:00

free-space-cache.h

Btrfs: allow block group cache writeout outside critical section in commit

2015-04-10 14:07:22 -07:00

hash.c

btrfs: LLVMLinux: Remove VLAIS

2014-10-14 10:51:22 +02:00

hash.h

…

inode-item.c

Btrfs: fix fsync log replay for inodes with a mix of regular refs and extrefs

2015-01-21 18:02:05 -08:00

inode-map.c

Btrfs: allow block group cache writeout outside critical section in commit

2015-04-10 14:07:22 -07:00

inode-map.h

…

inode.c

Merge branch 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

2015-05-01 07:46:21 -07:00

ioctl.c

Merge branch 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

2015-05-01 07:46:21 -07:00

Kconfig

rcu: Make SRCU optional by using CONFIG_SRCU

2015-01-06 11:04:29 -08:00

locking.c

btrfs: fix lockups from btrfs_clear_path_blocking

2014-11-19 10:34:35 -08:00

locking.h

btrfs: fix lockups from btrfs_clear_path_blocking

2014-11-19 10:34:35 -08:00

lzo.c

btrfs: constify structs with op functions or static definitions

2015-02-16 18:48:44 +01:00

Makefile

…

math.h

btrfs: cleanup 64bit/32bit divs, compile time constants

2015-03-03 17:23:57 +01:00

ordered-data.c

Btrfs: fix fsync race leading to ordered extent memory leaks

2015-03-02 14:04:44 -08:00

ordered-data.h

Btrfs: collect only the necessary ordered extents on ranged fsync

2014-11-21 11:59:56 -08:00

orphan.c

btrfs: kill the key type accessor helpers

2014-09-17 13:37:12 -07:00

print-tree.c

btrfs: remove parameter blocksize from read_tree_block

2014-10-02 17:14:50 +02:00

print-tree.h

…

props.c

btrfs: constify structs with op functions or static definitions

2015-02-16 18:48:44 +01:00

props.h

…

qgroup.c

btrfs: quota: Automatically update related qgroups or mark INCONSISTENT flags when assigning/deleting a qgroup relations.

2015-04-13 07:52:59 -07:00

qgroup.h

btrfs: qgroup: do a reservation in a higher level.

2015-04-13 07:52:50 -07:00

raid56.c

Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1

2015-03-25 10:52:48 -07:00

raid56.h

Btrfs: Make raid_map array be inlined in btrfs_bio structure

2015-01-21 18:06:47 -08:00

rcu-string.h

…

reada.c

Btrfs: add ref_count and free function for btrfs_bio

2015-01-21 18:06:48 -08:00

relocation.c

btrfs: qgroup: do a reservation in a higher level.

2015-04-13 07:52:50 -07:00

root-tree.c

…

scrub.c

Merge branch 'cleanups-post-3.19' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux into for-linus-4.1

2015-03-25 10:52:48 -07:00

send.c

Btrfs: incremental send, remove dead code

2015-03-26 17:55:52 -07:00

send.h

…

struct-funcs.c

…

super.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-04-26 17:22:07 -07:00

sysfs.c

btrfs: constify structs with op functions or static definitions

2015-02-16 18:48:44 +01:00

sysfs.h

btrfs: switch helper macros to static inlines in sysfs.h

2015-03-03 17:24:02 +01:00

transaction.c

Btrfs: allow block group cache writeout outside critical section in commit

2015-04-10 14:07:22 -07:00

transaction.h

Btrfs: allow block group cache writeout outside critical section in commit

2015-04-10 14:07:22 -07:00

tree-defrag.c

…

tree-log.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-04-26 17:22:07 -07:00

tree-log.h

Btrfs: fix metadata inconsistencies after directory fsync

2015-03-26 17:56:23 -07:00

ulist.c

…

ulist.h

…

uuid-tree.c

Btrfs: make btrfs_search_forward return with nodes unlocked

2014-09-17 13:38:02 -07:00

volumes.c

bio: skip atomic inc/dec of ->bi_cnt for most use cases

2015-05-05 13:32:49 -06:00

volumes.h

btrfs: remove unused fs_info arg from btrfs_close_extra_devices()

2015-02-16 18:48:45 +01:00

xattr.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2015-04-26 17:22:07 -07:00

xattr.h

…

zlib.c

btrfs: constify structs with op functions or static definitions

2015-02-16 18:48:44 +01:00