Linus Torvalds d6bb3e9075 vfs: simplify and shrink stack frame of link_path_walk() ... Commit 9226b5b440 ("vfs: avoid non-forwarding large load after small store in path lookup") made link_path_walk() always access the "hash_len" field as a single 64-bit entity, in order to avoid mixed size accesses to the members. However, what I didn't notice was that that effectively means that the whole "struct qstr this" is now basically redundant. We already explicitly track the "const char *name", and if we just use "u64 hash_len" instead of "long len", there is nothing else left of the "struct qstr". We do end up wanting the "struct qstr" if we have a filesystem with a "d_hash()" function, but that's a rare case, and we might as well then just squirrell away the name and hash_len at that point. End result: fewer live variables in the loop, a smaller stack frame, and better code generation. And we don't need to pass in pointers variables to helper functions any more, because the return value contains all the relevant information. So this removes more lines than it adds, and the source code is clearer too. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2014-09-15 10:51:07 -07:00
..
9p	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
adfs	adfs: add __printf verification, fix format/argument mismatches	2014-08-08 15:57:24 -07:00
affs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
afs	AFS: Correctly assemble the client UUID	2014-07-29 10:14:36 -07:00
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/mason/linux-btrfs	2014-09-12 11:53:30 -07:00
cachefiles	fs/cachefiles: replace kerror by pr_err	2014-06-06 16:08:14 -07:00
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	Clarify Kconfig help text for CIFS and SMB2/SMB3	2014-08-25 17:01:05 -05:00
coda	fs/coda: use linux/uaccess.h	2014-08-08 15:57:20 -07:00
configfs	fs/configfs: use pr_fmt	2014-06-04 16:53:53 -07:00
cramfs	fs/cramfs/inode.c: use linux/uaccess.h	2014-08-08 15:57:25 -07:00
debugfs	fs: debugfs: remove trailing whitespace	2014-07-09 16:58:21 -07:00
devpts	fs/devpts/inode.c: convert printk to pr_foo()	2014-06-06 16:08:14 -07:00
dlm	fs/dlm/debug_fs.c: remove unnecessary null test before debugfs_remove	2014-08-08 15:57:27 -07:00
ecryptfs	write_iter variants of {__,}generic_file_aio_write()	2014-05-06 17:38:00 -04:00
efivarfs	fs/efivarfs/super.c: use static const for dentry_operations	2014-06-04 16:54:14 -07:00
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	fs/exportfs/expfs.c: kernel-doc warning fixes	2014-06-04 16:54:14 -07:00
ext2	fs/ext2/super.c: Drop memory allocation cast	2014-07-15 22:40:22 +02:00
ext3	ext3: Count internal journal as bsddf overhead in ext3_statfs	2014-08-19 23:16:51 +02:00
ext4	ext4: avoid trying to kfree an ERR_PTR pointer	2014-09-03 09:37:30 -04:00
f2fs	f2fs: reposition unlock_new_inode to prevent accessing invalid inode	2014-09-02 00:22:24 -07:00
fat	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
freevxfs	Major changes for 3.14 include support for the newly added ZERO_RANGE	2014-04-04 15:39:39 -07:00
fscache	fs/fscache: make ctl_table static	2014-08-06 18:01:12 -07:00
fuse	switch iov_iter_get_pages() to passing maximal number of pages	2014-08-07 14:40:11 -04:00
gfs2	Merge branch 'sched/urgent' into sched/core, to merge fixes before applying new changes	2014-07-28 10:03:00 +02:00
hfs	write_iter variants of {__,}generic_file_aio_write()	2014-05-06 17:38:00 -04:00
hfsplus	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
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	fs/hugetlbfs/inode.c: remove null test before kfree	2014-06-04 16:54:11 -07:00
isofs	isofs: Fix unbounded recursion when processing relocated directories	2014-08-19 18:29:30 +02:00
jbd	fs/jbd/revoke.c: replace shift loop by ilog2	2014-05-21 10:26:13 +02:00
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	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
kernfs	Merge 3.16-rc6 into driver-core-next	2014-07-21 10:07:25 -07:00
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	fs/ncpfs/getopt.c: replace simple_strtoul by kstrtoul	2014-06-04 16:54:21 -07:00
nfs	pnfs: fix filelayout_retry_commit when idx > 0	2014-09-10 12:43:45 -07:00
nfs_common	fs/nfs_common/nfsacl.c: move EXPORT symbol after functions	2014-07-12 18:43:42 -04:00
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	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
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	fs: push sync_filesystem() down to the file system's remount_fs()	2014-03-13 10:14:33 -04:00
qnx6	fs/qnx6: update debugging to current functions	2014-08-08 15:57:26 -07:00
quota	fs/quota: kernel-doc warning fixes	2014-07-15 22:40:23 +02:00
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	kernfs: move the last knowledge of sysfs out from kernfs	2014-06-03 08:11:18 -07:00
sysv	write_iter variants of {__,}generic_file_aio_write()	2014-05-06 17:38:00 -04:00
ubifs	UBIFS: Add log overlap assertions	2014-07-31 15:52:51 +03:00
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	aio: block exit_aio() until all context requests are completed	2014-09-04 16:54:47 -04:00
anon_inodes.c	vfs: Allocate anon_inode_inode in anon_inode_init()	2014-03-27 09:52:54 -07:00
attr.c	fs,userns: Change inode_capable to capable_wrt_inode_uidgid	2014-06-10 13:57:22 -07:00
bad_inode.c	bad_inode: add ->rename2()	2014-08-07 14:40:09 -04:00
binfmt_aout.c
binfmt_elf_fdpic.c
binfmt_elf.c	Merge branch 'x86/vdso' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into next	2014-06-05 08:05:29 -07:00
binfmt_em86.c
binfmt_flat.c	fs/binfmt_flat.c: make old_reloc() static	2014-06-04 16:54:21 -07:00
binfmt_misc.c	binfmt_misc: add missing 'break' statement	2014-04-03 16:21:16 -07:00
binfmt_script.c
binfmt_som.c
block_dev.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
buffer.c	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
char_dev.c
compat_binfmt_elf.c	binfmt_elf: add ELF_HWCAP2 to compat auxv entries	2014-03-04 08:05:21 +00:00
compat_ioctl.c	Bluetooth: Move HCI socket definitions into its own header file	2014-07-11 13:53:04 +03:00
compat.c	locks: rename file-private locks to "open file description locks"	2014-04-22 08:23:58 -04:00
coredump.c	coredump: fix the setting of PF_DUMPCORE	2014-07-23 15:10:54 -07:00
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	fs: convert use of typedef ctl_table to struct ctl_table	2014-06-06 16:08:16 -07:00
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_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2014-06-12 10:30:18 -07:00
file.c	fs/file.c: don't open-code kvfree()	2014-05-06 17:31:10 -04:00
filesystems.c	sys_sysfs: Add CONFIG_SYSFS_SYSCALL	2014-04-03 16:21:05 -07:00
fs_pin.c	make fs/{namespace,super}.c forget about acct.h	2014-08-07 14:40:09 -04:00
fs_struct.c
fs-writeback.c	sched: Remove proliferation of wait_on_bit() action functions	2014-07-16 15:10:39 +02:00
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	fs/libfs.c: add generic data flush to fsync	2014-06-04 16:53:55 -07:00
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	fs/mbcache: replace __builtin_log2() with ilog2()	2014-06-25 22:08:29 -04:00
mount.h	death to mnt_pinned	2014-08-07 14:40:09 -04:00
mpage.c	fs/block_dev.c: add bdev_read_page() and bdev_write_page()	2014-06-04 16:54:02 -07:00
namei.c	vfs: simplify and shrink stack frame of link_path_walk()	2014-09-15 10:51:07 -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	new helper: copy_page_from_iter()	2014-05-06 17:39:42 -04:00
pnode.c	get rid of propagate_umount() mistakenly treating slaves as busy.	2014-08-30 18:31:41 -04:00
pnode.h	smarter propagate_mnt()	2014-04-01 23:19:08 -04:00
posix_acl.c	posix_acl: handle NULL ACL in posix_acl_equiv_mode	2014-05-06 13:58:42 -04:00
proc_namespace.c	namespaces: Use task_lock and not rcu to protect nsproxy	2014-07-29 18:08:50 -07:00
read_write.c	switch simple generic_file_aio_read() users to ->read_iter()	2014-05-06 17:37:55 -04:00
readdir.c	fanotify: create FAN_ACCESS event for readdir	2014-06-04 16:53:52 -07:00
select.c
seq_file.c	fs/seq_file: fallback to vmalloc allocation	2014-07-03 09:21:54 -07:00
signalfd.c
splice.c	Merge commit '9f12600fe425bc28f0ccba034a77783c09c15af4' into for-linus	2014-06-12 00:28:09 -04:00
stack.c
stat.c
statfs.c
super.c	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
sync.c	Export sync_filesystem() for modular ->remount_fs() use	2014-09-05 08:16:21 -07:00
timerfd.c	timerfd: Use ktime_mono_to_real()	2014-07-23 10:18:02 -07:00
utimes.c
xattr.c	simple_xattr: permit 0-size extended attributes	2014-07-23 15:10:55 -07:00