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ed192c59f8
linux/fs
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Mateusz Guzik ed192c59f8 file: mostly eliminate spurious relocking in __range_close 
Stock code takes a lock trip for every fd in range, but this can be
trivially avoided and real-world consumers do have plenty of already
closed cases.

Just booting Debian 12 with a debug printk shows:
(sh) min 3 max 17 closed 15 empty 0
(sh) min 19 max 63 closed 31 empty 14
(sh) min 4 max 63 closed 0 empty 60
(spawn) min 3 max 63 closed 13 empty 48
(spawn) min 3 max 63 closed 13 empty 48
(mount) min 3 max 17 closed 15 empty 0
(mount) min 19 max 63 closed 32 empty 13

and so on.

While here use more idiomatic naming.

An avoidable relock is left in place to avoid uglifying the code.
The code was not switched to bitmap traversal for the same reason.

Tested with ltp kernel/syscalls/close_range

Signed-off-by: Mateusz Guzik <mjguzik@gmail.com>
Message-Id: <20230727113809.800067-1-mjguzik@gmail.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
2023-08-04 17:57:56 +02:00
..
9p 9p: Add splice_read wrapper 2023-05-24 08:42:16 -06:00
adfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
affs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
afs afs: Fix accidental truncation when storing data 2023-07-04 12:24:32 -07:00
autofs autofs: set ctime as well when mtime changes on a dir 2023-06-15 09:22:24 +02:00
befs befs: Replace all non-returning strlcpy with strscpy 2023-05-30 16:42:00 -07:00
bfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
btrfs - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
cachefiles v6.5/vfs.file 2023-06-26 10:14:36 -07:00
ceph A bunch of CephFS fixups from Xiubo, mostly around dropping caps, along 2023-07-07 15:07:20 -07:00
coda coda: Implement splice-read 2023-05-24 08:42:16 -06:00
configfs fs: consolidate duplicate dt_type helpers 2023-04-03 09:23:54 +02:00
cramfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
crypto fscrypt: Replace 1-element array with flexible array 2023-05-23 19:46:09 -07:00
debugfs debugfs: Correct the 'debugfs_create_str' docs 2023-05-31 19:02:14 +01:00
devpts devpts: simplify two-level sysctl registration for pty_kern_table 2023-03-13 12:36:34 +01:00
dlm dlm for 6.5 2023-06-29 13:27:50 -07:00
ecryptfs fs/ecryptfs: remove kernel-doc warnings 2023-08-02 09:46:22 +02:00
efivarfs efivarfs: expose used and total size 2023-05-17 18:21:34 +02:00
efs
erofs for-6.5/block-2023-06-23 2023-06-26 12:47:20 -07:00
exfat splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
exportfs exportfs: add explicit flag to request non-decodeable file handles 2023-05-22 18:08:37 +02:00
ext2 \n 2023-06-29 13:39:51 -07:00
ext4 \n 2023-06-29 13:39:51 -07:00
f2fs f2fs update for 6.5-rc1 2023-07-05 14:14:37 -07:00
fat splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
freevxfs There is no particular theme here - mainly quick hits all over the tree. 2023-02-23 17:55:40 -08:00
fscache fscache: Use clear_and_wake_up_bit() in fscache_create_volume_work() 2023-01-30 12:51:54 +00:00
fuse libnvdimm for 6.5 2023-07-01 08:48:02 -07:00
gfs2 gfs2 fixes 2023-07-04 11:45:16 -07:00
hfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
hfsplus splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
hostfs Landlock updates for v6.5-rc1 2023-06-27 17:10:27 -07:00
hpfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
hugetlbfs hugetlb: revert use of page_cache_next_miss() 2023-06-23 16:59:32 -07:00
iomap New code for 6.5: 2023-07-02 11:14:54 -07:00
isofs
jbd2 Various cleanups and bug fixes in ext4's extent status tree, 2023-06-29 13:18:36 -07:00
jffs2 for-6.5/splice-2023-06-23 2023-06-26 11:52:12 -07:00
jfs Minor bug fixes and cleanups 2023-06-29 13:10:32 -07:00
kernfs driver core changes for 6.5-rc1 2023-07-03 12:56:23 -07:00
lockd NFS client updates for Linux 6.5 2023-07-01 14:38:25 -07:00
minix splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
netfs Move netfs_extract_iter_to_sg() to lib/scatterlist.c 2023-06-08 13:42:33 +02:00
nfs fs: Pass argument to fcntl_setlease as int 2023-07-10 14:36:11 +02:00
nfs_common NFSv4.2: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:52 -07:00
nfsd nfsd-6.5 fixes: 2023-06-30 21:48:44 -07:00
nilfs2 for-6.5/block-2023-06-23 2023-06-26 12:47:20 -07:00
nls
notify dnotify: Pass argument of fcntl_dirnotify as int 2023-07-10 14:36:12 +02:00
ntfs - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
ntfs3 driver ntfs3 for linux 6.5 2023-07-07 14:59:38 -07:00
ocfs2 docs: update ocfs2-devel mailing list address 2023-07-08 09:29:29 -07:00
omfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
openpromfs
orangefs orangefs: Provide a splice-read wrapper 2023-05-24 08:42:16 -06:00
overlayfs ovl: move all parameter handling into params.{c,h} 2023-07-03 16:08:17 +03:00
proc asm-generic updates for 6.5 2023-07-06 10:06:04 -07:00
pstore pstore updates for v6.5-rc1 2023-06-27 21:21:32 -07:00
qnx4 qnx4: credit contributors in CREDITS 2023-03-14 12:56:30 -06:00
qnx6 qnx6: credit contributor and mark filesystem orphan 2023-03-14 12:56:30 -06:00
quota quota: fix warning in dqgrab() 2023-06-05 16:50:30 +02:00
ramfs - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
reiserfs reiserfs: Check the return value from __getblk() 2023-07-10 14:36:10 +02:00
romfs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
smb fs: Pass argument to fcntl_setlease as int 2023-07-10 14:36:11 +02:00
squashfs squashfs: fix cache race with migration 2023-07-08 09:29:30 -07:00
sysfs sysfs: Skip empty folders creation 2023-06-15 13:37:53 +02:00
sysv for-6.5/splice-2023-06-23 2023-06-26 11:52:12 -07:00
tracefs fs: port ->mkdir() to pass mnt_idmap 2023-01-19 09:24:26 +01:00
ubifs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
udf \n 2023-06-29 13:39:51 -07:00
ufs splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
unicode unicode: remove MODULE_LICENSE in non-modules 2023-04-13 13:13:54 -07:00
vboxsf hardening updates for v6.5-rc1 2023-06-27 21:24:18 -07:00
verity fsverity: improve documentation for builtin signature support 2023-06-20 22:47:55 -07:00
xfs Minor cleanups for 6.5: 2023-07-09 09:50:42 -07:00
zonefs - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
aio.c fs/aio: Stop allocating aio rings from HIGHMEM 2023-06-15 09:22:23 +02:00
anon_inodes.c
attr.c attr: block mode changes of symlinks 2023-07-14 09:48:58 +02:00
bad_inode.c fs: port ->permission() to pass mnt_idmap 2023-01-19 09:24:28 +01:00
binfmt_elf_fdpic.c binfmt: Slightly simplify elf_fdpic_map_file() 2023-05-30 15:49:46 -07:00
binfmt_elf_test.c
binfmt_elf.c Merge branch 'expand-stack' 2023-06-28 20:35:21 -07:00
binfmt_flat.c
binfmt_misc.c
binfmt_script.c
buffer.c \n 2023-06-29 13:39:51 -07:00
char_dev.c vfs: Replace all non-returning strlcpy with strscpy 2023-05-15 09:42:01 +02:00
compat_binfmt_elf.c
coredump.c v6.5/vfs.misc 2023-06-26 09:50:21 -07:00
d_path.c fs: d_path: include internal.h 2023-05-17 09:16:59 +02:00
dax.c dax: enable dax fault handler to report VM_FAULT_HWPOISON 2023-06-26 07:54:23 -06:00
dcache.c
direct-io.c - Yosry Ahmed brought back some cgroup v1 stats in OOM logs. 2023-06-28 10:28:11 -07:00
drop_caches.c
eventfd.c eventfd: prevent underflow for eventfd semaphores 2023-07-11 11:41:34 +02:00
eventpoll.c epoll: simplify ep_alloc() 2023-07-26 14:56:07 +02:00
exec.c \n 2023-06-29 13:31:44 -07:00
fcntl.c fcntl: Cast commands with int args explicitly 2023-07-10 14:36:11 +02:00
fhandle.c fsnotify: move fsnotify_open() hook into do_dentry_open() 2023-06-12 10:43:45 +02:00
file_table.c fs: move cleanup from init_file() into its callers 2023-07-02 13:15:49 +02:00
file.c file: mostly eliminate spurious relocking in __range_close 2023-08-04 17:57:56 +02:00
filesystems.c
fs_context.c fs: avoid empty option when generating legacy mount string 2023-06-07 21:49:55 +02:00
fs_parser.c
fs_pin.c
fs_struct.c
fs_types.c
fs-writeback.c writeback: move wb_over_bg_thresh() call outside lock section 2023-06-09 16:25:14 -07:00
fsopen.c
init.c fs: port ->permission() to pass mnt_idmap 2023-01-19 09:24:28 +01:00
inode.c fs: don't assume arguments are non-NULL 2023-07-04 10:21:11 +02:00
internal.h v6.5/vfs.file 2023-06-26 10:14:36 -07:00
ioctl.c fs: port inode_owner_or_capable() to mnt_idmap 2023-01-19 09:24:29 +01:00
Kconfig smb: move client and server files to common directory fs/smb 2023-05-24 16:29:21 -05:00
Kconfig.binfmt
kernel_read_file.c
libfs.c fs: Pass argument to fcntl_setlease as int 2023-07-10 14:36:11 +02:00
locks.c fs: Pass argument to fcntl_setlease as int 2023-07-10 14:36:11 +02:00
Makefile for-6.5/block-2023-06-23 2023-06-26 12:47:20 -07:00
mbcache.c ext4: fix deadlock due to mbcache entry corruption 2022-12-08 21:49:25 -05:00
mnt_idmapping.c fs: move mnt_idmap 2023-01-19 09:24:30 +01:00
mount.h
mpage.c mpage: use folios in bio end_io handler 2023-04-18 16:30:02 -07:00
namei.c fs: Fix error checking for d_hash_and_lookup() 2023-07-14 17:01:23 +02:00
namespace.c v6.5/vfs.mount 2023-06-26 10:27:04 -07:00
nsfs.c kill the last remaining user of proc_ns_fget() 2023-04-20 22:55:35 -04:00
open.c \n 2023-06-29 13:31:44 -07:00
pipe.c pipe: Pass argument of pipe_fcntl as int 2023-07-10 14:36:12 +02:00
pnode.c fs: allow to mount beneath top mount 2023-05-19 04:30:22 +02:00
pnode.h fs: allow to mount beneath top mount 2023-05-19 04:30:22 +02:00
posix_acl.c acl: don't depend on IOP_XATTR 2023-03-06 09:59:20 +01:00
proc_namespace.c tty, proc, kernfs, random: Use copy_splice_read() 2023-05-24 08:42:16 -06:00
read_write.c splice: Use filemap_splice_read() instead of generic_file_splice_read() 2023-05-24 08:42:17 -06:00
readdir.c readdir: Replace one-element arrays with flexible-array members 2023-06-21 09:06:59 +02:00
remap_range.c fs: use UB-safe check for signed addition overflow in remap_verify_area 2023-05-24 11:03:59 +02:00
select.c
seq_file.c
signalfd.c
splice.c splice: fsnotify_access(in), fsnotify_modify(out) on success in tee 2023-07-10 14:36:11 +02:00
stack.c
stat.c fs.idmapped.v6.3 2023-02-20 11:53:11 -08:00
statfs.c statfs: enforce statfs[64] structure initialization 2023-05-17 15:20:17 +02:00
super.c \n 2023-06-29 13:39:51 -07:00
sync.c
sysctls.c sysctl: Refactor base paths registrations 2023-05-23 21:43:26 -07:00
timerfd.c
userfaultfd.c Merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes. 2023-06-23 16:58:19 -07:00
utimes.c fs.idmapped.v6.3 2023-02-20 11:53:11 -08:00
xattr.c fs: don't call posix_acl_listxattr in generic_listxattr 2023-05-17 15:25:20 +02:00