You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

Mikulas Patocka 1c0b8a7a62 hpfs: optimize quad buffer loading ... HPFS needs to load 4 consecutive 512-byte sectors when accessing the directory nodes or bitmaps. We can't switch to 2048-byte block size because files are allocated in the units of 512-byte sectors. Previously, the driver would allocate a 2048-byte area using kmalloc, copy the data from four buffers to this area and eventually copy them back if they were modified. In the current implementation of the buffer cache, buffers are allocated in the pagecache. That means that 4 consecutive 512-byte buffers are stored in consecutive areas in the kernel address space. So, we don't need to allocate extra memory and copy the content of the buffers there. This patch optimizes the code to avoid copying the buffers. It checks if the four buffers are stored in contiguous memory - if they are not, it falls back to allocating a 2048-byte area and copying data there. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		11 years ago
..
9p	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
adfs	adfs: delayed freeing of sbi	11 years ago
affs	affs: use ->kill_sb() to simplify ->put_super() and failure exits of ->mount()	11 years ago
afs	afs: proc cells and rootcell are writeable	11 years ago
autofs4	autofs: fix symlinks aren't checked for expiry	11 years ago
befs	befs: iget_locked() doesn't return an ERR_PTR	11 years ago
bfs	truncate: drop 'oldsize' truncate_pagecache() parameter	12 years ago
btrfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs	11 years ago
cachefiles	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
ceph	ceph: fix missing dput in ceph_set_acl	11 years ago
cifs	cifs: Fix check for regular file in couldbe_mf_symlink()	11 years ago
coda	coda_revalidate_inode(): switch to passing inode...	11 years ago
configfs	configfs: fix race between dentry put and lookup	11 years ago
cramfs	cramfs: take headers to fs/cramfs	11 years ago
debugfs	debugfs: use list_next_entry() in debugfs_remove_recursive()	11 years ago
devpts	devpts: plug the memory leak in kill_sb	11 years ago
dlm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	11 years ago
ecryptfs	ecryptfs: fix failure handling in ->readlink()	11 years ago
efivarfs	consolidate simple ->d_delete() instances	11 years ago
efs	efs: get rid of ->put_super()	11 years ago
exofs	exofs: Print less in r4w	11 years ago
exportfs	exportfs: fix quadratic behavior in filehandle lookup	11 years ago
ext2	ext2/3/4: use generic posix ACL infrastructure	11 years ago
ext3	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
ext4	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
f2fs	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
fat	fat: rcu-delay unloading nls and freeing sbi	11 years ago
freevxfs	[readdir] convert freevxfs	12 years ago
fscache	Merge branch 'for-3.13/core' of git://git.kernel.dk/linux-block	11 years ago
fuse	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
gfs2	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
hfs	fs/hfs/btree.h: remove duplicate defines	11 years ago
hfsplus	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
hostfs	um: hostfs: make functions static	11 years ago
hpfs	hpfs: optimize quad buffer loading	11 years ago
hppfs	clean up scary strncpy(dst, src, strlen(src)) uses	12 years ago
hugetlbfs	cope with potentially long ->d_dname() output for shmem/hugetlb	12 years ago
isofs	isofs: don't pass dentry to isofs_hash{i,}_common()	11 years ago
jbd	jbd: Revise KERN_EMERG error messages	11 years ago
jbd2	jbd2: rename obsoleted msg JBD->JBD2	11 years ago
jffs2	MTD updates for 3.14:	11 years ago
jfs	Minor bug fix for linux-3.14	11 years ago
kernfs	kernfs: associate a new kernfs_node with its parent on creation	11 years ago
lockd	LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargs	12 years ago
logfs	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
minix	fs/minix: Drop dependency on H8300	12 years ago
ncpfs	ncpfs: rcu-delay unload_nls() and freeing ncp_server	11 years ago
nfs	NFS client bugfixes for Linux 3.14	11 years ago
nfs_common	…
nfsd	Merge branch 'for-3.14' of git://linux-nfs.org/~bfields/linux	11 years ago
nilfs2	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
nls	nls: have register_nls() set ->owner	11 years ago
notify	fanotify: Fix use after free for permission events	11 years ago
ntfs	iget/iget5: don't bother with ->i_lock until we find a match	11 years ago
ocfs2	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
omfs	truncate: drop 'oldsize' truncate_pagecache() parameter	12 years ago
openpromfs	[readdir] convert openpromfs	12 years ago
proc	fs/proc/array.c: change do_task_stat() to use while_each_thread()	11 years ago
pstore	pstore: Don't allow high traffic options on fragile devices	11 years ago
qnx4	qnx4: clean qnx4_fill_super() up	11 years ago
qnx6	[readdir] convert qnx6	12 years ago
quota	genetlink: make multicast groups const, prevent abuse	11 years ago
ramfs	fs/ramfs: move ramfs_aops to inode.c	11 years ago
reiserfs	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
romfs	romfs: fix returm err while getting inode in fill_super	11 years ago
squashfs	Squashfs: fix failure to unlock pages on decompress error	11 years ago
sysfs	Revert "kernfs, sysfs, driver-core: implement kernfs_remove_self() and its wrappers"	11 years ago
sysv	sysv: Add forgotten superblock lock init for v7 fs	12 years ago
ubifs	fs/ubifs: use rbtree postorder iteration helper instead of opencoding	11 years ago
udf	udf: Fix lockdep warning from udf_symlink()	11 years ago
ufs	truncate: drop 'oldsize' truncate_pagecache() parameter	12 years ago
xfs	Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block	11 years ago
Kconfig	fs: remove generic_acl	11 years ago
Kconfig.binfmt	…
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
aio.c	Merge git://git.kvack.org/~bcrl/aio-next	11 years ago
anon_inodes.c	... and kill anon_inode_getfile_private()	11 years ago
attr.c	fs: fix iversion handling	11 years ago
bad_inode.c	[readdir] ->readdir() is gone	12 years ago
binfmt_aout.c	dump_skip(): dump_seek() replacement taking coredump_params	11 years ago
binfmt_elf.c	fs: binfmt_elf: remove unused defines INTERPRETER_NONE and INTERPRETER_ELF	11 years ago
binfmt_elf_fdpic.c	elf{,_fdpic} coredump: get rid of pointless if (siginfo->si_signo)	11 years ago
binfmt_em86.c	file->f_op is never NULL...	11 years ago
binfmt_flat.c	…
binfmt_misc.c	…
binfmt_script.c	…
binfmt_som.c	…
bio-integrity.c	bio-integrity: Fix bio_integrity_verify segment start bug	11 years ago
bio.c	Revert "block: Warn and free bio if bi_end_io is not set"	11 years ago
block_dev.c	a trivial writeback fix	12 years ago
buffer.c	block: Replace __this_cpu_ptr with raw_cpu_ptr	11 years ago
char_dev.c	Merge branch 'for-3.13/core' of git://git.kernel.dk/linux-block	11 years ago
compat.c	[readdir] constify ->actor	12 years ago
compat_binfmt_elf.c	…
compat_ioctl.c	fs/compat_ioctl.c: fix an underflow issue (harmless)	11 years ago
coredump.c	coredump: make __get_dumpable/get_dumpable inline, kill fs/coredump.h	11 years ago
dcache.c	__dentry_path() fixes	11 years ago
dcookies.c	fs/compat: fix lookup_dcookie() parameter handling	11 years ago
direct-io.c	block: Abstract out bvec iterator	11 years ago
drop_caches.c	shrinker: add node awareness	12 years ago
eventfd.c	eventfd_ctx_fdget(): use fdget() instead of fget()	11 years ago
eventpoll.c	epoll: do not take the nested ep->mtx on EPOLL_CTL_DEL	11 years ago
exec.c	fs/exec.c: call arch_pick_mmap_layout() only once	11 years ago
fcntl.c	file->f_op is never NULL...	11 years ago
fhandle.c	…
file.c	fs: __fget_light() can use __fget() in slow path	11 years ago
file_table.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
filesystems.c	…
fs-writeback.c	writeback: Fix data corruption on NFS	11 years ago
fs_struct.c	seqcount: Add lockdep functionality to seqcount/seqlock structures	11 years ago
inode.c	locks: break delegations on any attribute modification	11 years ago
internal.h	get rid of s_files and files_lock	11 years ago
ioctl.c	file->f_op is never NULL...	11 years ago
ioprio.c	…
libfs.c	consolidate simple ->d_delete() instances	11 years ago
locks.c	locks: missing unlock on error in generic_add_lease()	11 years ago
mbcache.c	fs: convert fs shrinkers to new scan/count API	12 years ago
mount.h	vfs: Is mounted should be testing mnt_ns for NULL or error.	11 years ago
mpage.c	block: Abstract out bvec iterator	11 years ago
namei.c	Fix mountpoint reference leakage in linkat	11 years ago
namespace.c	Driver core / sysfs patches for 3.14-rc1	11 years ago
no-block.c	…
open.c	locks: break delegations on any attribute modification	11 years ago
pipe.c	fs/pipe.c: skip file_update_time on frozen fs	11 years ago
pnode.c	split __lookup_mnt() in two functions	11 years ago
pnode.h	vfs: Don't copy mount bind mounts of /proc/<pid>/ns/mnt between namespaces	12 years ago
posix_acl.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
proc_namespace.c	fs/proc_namespace.c: simplify testing nsp and nsp->mnt_ns	11 years ago
read_write.c	fs/compat: fix parameter handling for compat readv/writev syscalls	11 years ago
readdir.c	file->f_op is never NULL...	11 years ago
select.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	11 years ago
seq_file.c	seq_file: always clear m->count when we free m->buf	11 years ago
signalfd.c	…
splice.c	fuse: fix pipe_buf_operations	11 years ago
stack.c	…
stat.c	vfs: split out vfs_getattr_nosec	11 years ago
statfs.c	vfs: allow O_PATH file descriptors for fstatfs()	11 years ago
super.c	fs/super.c: sync ro remount after blocking writers	11 years ago
sync.c	Merge branch 'akpm' (patches from Andrew Morton)	11 years ago
timerfd.c	timerfd: Add alarm timers	12 years ago
utimes.c	locks: break delegations on any attribute modification	11 years ago
xattr.c	…