Tejun Heo 2aad2a86f6 percpu_ref: add PERCPU_REF_INIT_* flags ... With the recent addition of percpu_ref_reinit(), percpu_ref now can be used as a persistent switch which can be turned on and off repeatedly where turning off maps to killing the ref and waiting for it to drain; however, there currently isn't a way to initialize a percpu_ref in its off (killed and drained) state, which can be inconvenient for certain persistent switch use cases. Similarly, percpu_ref_switch_to_atomic/percpu() allow dynamic selection of operation mode; however, currently a newly initialized percpu_ref is always in percpu mode making it impossible to avoid the latency overhead of switching to atomic mode. This patch adds @flags to percpu_ref_init() and implements the following flags. * PERCPU_REF_INIT_ATOMIC : start ref in atomic mode * PERCPU_REF_INIT_DEAD : start ref killed and drained These flags should be able to serve the above two use cases. v2: target_core_tpg.c conversion was missing. Fixed. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Kent Overstreet <kmo@daterainc.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Christoph Hellwig <hch@infradead.org> Cc: Johannes Weiner <hannes@cmpxchg.org>		2014-09-24 13:31:50 -04:00
..
9p
adfs	adfs: add __printf verification, fix format/argument mismatches	2014-08-08 15:57:24 -07:00
affs
afs
autofs4	autofs4: comment typo: remove a a doubled word	2014-08-08 15:57:19 -07:00
befs	fs/befs/linuxvfs.c: check superblock before dump operation	2014-08-08 15:57:20 -07:00
bfs	fs/bfs: use bfs prefix for dump_imap	2014-08-08 15:57:24 -07:00
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block into for-3.18	2014-09-24 13:00:21 -04:00
cachefiles	CacheFiles: Handle rename2	2014-09-17 23:29:53 +01:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2014-08-13 17:43:29 -06:00
cifs	Fix mfsymlinks file size check	2014-09-16 06:48:20 -05:00
coda	fs/coda: use linux/uaccess.h	2014-08-08 15:57:20 -07:00
configfs
cramfs	fs/cramfs/inode.c: use linux/uaccess.h	2014-08-08 15:57:25 -07:00
debugfs
devpts
dlm	fs/dlm/debug_fs.c: remove unnecessary null test before debugfs_remove	2014-08-08 15:57:27 -07:00
ecryptfs
efivarfs
efs	fs/efs/namei.c: return is not a function	2014-08-08 15:57:18 -07:00
exofs	fs/exofs/ore_raid.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:24 -07:00
exportfs
ext2	percpu_counter: add @gfp to percpu_counter_init()	2014-09-08 09:51:29 +09:00
ext3	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block into for-3.18	2014-09-24 13:00:21 -04:00
ext4	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block into for-3.18	2014-09-24 13:00:21 -04:00
f2fs	f2fs: reposition unlock_new_inode to prevent accessing invalid inode	2014-09-02 00:22:24 -07:00
fat
freevxfs
fscache	FS-Cache: refcount becomes corrupt under vma pressure.	2014-09-17 22:41:40 +01:00
fuse	switch iov_iter_get_pages() to passing maximal number of pages	2014-08-07 14:40:11 -04:00
gfs2	GFS2: fix d_splice_alias() misuses	2014-09-12 20:58:55 +01:00
hfs
hfsplus
hostfs	hostfs: support rename flags	2014-08-07 14:40:09 -04:00
hpfs	fs/hpfs/dnode.c: fix suspect code indent	2014-08-08 15:57:22 -07:00
hppfs
hugetlbfs
isofs	isofs: Fix unbounded recursion when processing relocated directories	2014-08-19 18:29:30 +02:00
jbd
jbd2	jbd2: fix descriptor block size handling errors with journal_csum	2014-08-28 22:22:29 -04:00
jffs2	MTD updates for 3.17-rc1	2014-08-08 18:13:21 -07:00
jfs
kernfs
lockd	lockd: fix rpcbind crash on lockd startup failure	2014-09-08 12:03:32 -04:00
logfs	fs/logfs/readwrite.c: kernel-doc warning fixes	2014-08-06 18:01:12 -07:00
minix	minix zmap block counts calculation fix	2014-08-08 15:57:20 -07:00
ncpfs
nfs	NFSv4: Fix another bug in the close/open_downgrade code	2014-09-18 13:04:22 -04:00
nfs_common
nfsd	nfsd4: fix rd_dircount enforcement	2014-09-08 12:02:03 -04:00
nilfs2	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-08-11 11:44:11 -07:00
nls
notify	fs/notify: don't show f_handle if exportfs_encode_inode_fh failed	2014-09-10 15:42:12 -07:00
ntfs	ntfs: kernel-doc warning fixes	2014-08-06 18:01:12 -07:00
ocfs2	ocfs2: quorum: add a log for node not fenced	2014-08-29 16:28:17 -07:00
omfs	fs/omfs/inode.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:25 -07:00
openpromfs
proc	Revert "proc: Point /proc/{mounts,net} at /proc/thread-self/{mounts,net} instead of /proc/self/{mounts,net}"	2014-08-10 21:24:59 -07:00
pstore	fs/pstore/ram_core.c: replace count*size kmalloc by kmalloc_array	2014-08-08 15:57:25 -07:00
qnx4
qnx6	fs/qnx6: update debugging to current functions	2014-08-08 15:57:26 -07:00
quota	percpu_counter: add @gfp to percpu_counter_init()	2014-09-08 09:51:29 +09:00
ramfs	fs/ramfs/file-nommu.c: replace count*size kzalloc by kcalloc	2014-08-08 15:57:18 -07:00
reiserfs	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs	2014-08-13 17:45:40 -06:00
romfs	fs/romfs/super.c: add blank line after declarations	2014-08-08 15:57:25 -07:00
squashfs	fs/squashfs/super.c: logging cleanup	2014-08-06 18:01:13 -07:00
sysfs
sysv
ubifs
udf	udf: saner calling conventions for udf_new_inode()	2014-09-04 21:37:41 +02:00
ufs	ufs: fix deadlocks introduced by sb mutex merge	2014-09-07 13:26:39 -04:00
xfs	xfs: trim eofblocks before collapse range	2014-09-02 12:12:53 +10:00
aio.c	percpu_ref: add PERCPU_REF_INIT_* flags	2014-09-24 13:31:50 -04:00
anon_inodes.c
attr.c
bad_inode.c	bad_inode: add ->rename2()	2014-08-07 14:40:09 -04:00
binfmt_aout.c
binfmt_elf.c
binfmt_elf_fdpic.c
binfmt_em86.c
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
binfmt_som.c
block_dev.c
buffer.c	Fix nasty 32-bit overflow bug in buffer i/o code.	2014-09-22 08:41:16 -07:00
char_dev.c
compat.c
compat_binfmt_elf.c
compat_ioctl.c
coredump.c
dcache.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-09-14 17:37:36 -07:00
dcookies.c
direct-io.c	switch iov_iter_get_pages() to passing maximal number of pages	2014-08-07 14:40:11 -04:00
drop_caches.c
eventfd.c
eventpoll.c	eventpoll: fix uninitialized variable in epoll_ctl	2014-09-10 15:42:12 -07:00
exec.c	fork/exec: cleanup mm initialization	2014-08-08 15:57:23 -07:00
fcntl.c	shm: add sealing API	2014-08-08 15:57:31 -07:00
fhandle.c
file.c
file_table.c	percpu_counter: add @gfp to percpu_counter_init()	2014-09-08 09:51:29 +09:00
filesystems.c
fs-writeback.c
fs_pin.c	make fs/{namespace,super}.c forget about acct.h	2014-08-07 14:40:09 -04:00
fs_struct.c
inode.c	mm: allow drivers to prevent new writable mappings	2014-08-08 15:57:31 -07:00
internal.h	make fs/{namespace,super}.c forget about acct.h	2014-08-07 14:40:09 -04:00
ioctl.c
Kconfig
Kconfig.binfmt
libfs.c
locks.c	locks: pass correct "before" pointer to locks_unlink_lock in generic_add_lease	2014-08-22 09:58:22 -04:00
Makefile	take fs_pin stuff to fs/*	2014-08-07 14:40:08 -04:00
mbcache.c
mount.h	death to mnt_pinned	2014-08-07 14:40:09 -04:00
mpage.c
namei.c	vfs: workaround gcc <4.6 build error in link_path_walk()	2014-09-16 07:44:54 -07:00
namespace.c	fix EBUSY on umount() from MNT_SHRINKABLE	2014-08-30 18:32:05 -04:00
no-block.c
open.c	vfs: fix check for fallocate on active swapfile	2014-08-01 02:36:04 -04:00
pipe.c
pnode.c	get rid of propagate_umount() mistakenly treating slaves as busy.	2014-08-30 18:31:41 -04:00
pnode.h
posix_acl.c
proc_namespace.c
read_write.c
readdir.c
select.c
seq_file.c
signalfd.c
splice.c
stack.c
stat.c
statfs.c
super.c	percpu_counter: add @gfp to percpu_counter_init()	2014-09-08 09:51:29 +09:00
sync.c	Export sync_filesystem() for modular ->remount_fs() use	2014-09-05 08:16:21 -07:00
timerfd.c
utimes.c
xattr.c