Eric Sandeen a9cc799eca xfs: increase readdir buffer size ...

While doing some testing of readdir perf a while back,
I noticed that the buffer size we're using internally is
smaller than what glibc gives us by default.  Upping this
size helped a bit, and seems safe.

glibc's __alloc_dir() does:

  const size_t default_allocation = (4 * BUFSIZ < sizeof (struct dirent64)
                                     ? sizeof (struct dirent64) : 4 * BUFSIZ);
  const size_t small_allocation = (BUFSIZ < sizeof (struct dirent64)
                                   ? sizeof (struct dirent64) : BUFSIZ);
  size_t allocation = default_allocation;
#ifdef _STATBUF_ST_BLKSIZE
  if (statp != NULL && default_allocation < statp->st_blksize)
    allocation = statp->st_blksize;
#endif

and

#define _G_BUFSIZ 8192
#define _IO_BUFSIZ _G_BUFSIZ
# define BUFSIZ _IO_BUFSIZ

so the default buffer is 4 * 8192 = 32768
(except in the unlikely case of blocks > 32k....)

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alex Elder <aelder@sgi.com>

2010-03-01 16:33:41 -06:00

..

9p

9p: fix memory leak in v9fs_parse_options()

2010-02-08 17:59:34 -06:00

adfs

adfs: remove redundant test on unsigned

2009-09-24 07:21:05 -07:00

affs

fix affs parse_options()

2010-01-26 22:22:25 -05:00

afs

afs: remove manual O_SYNC handling

2009-12-10 15:02:50 +01:00

autofs

trivial: remove unnecessary semicolons

2009-09-21 15:14:58 +02:00

autofs4

autofs4: always use lookup for lookup

2009-12-16 07:19:58 -08:00

befs

befs: fix leak

2010-02-07 03:06:21 -05:00

bfs

Fix failure exits in bfs_fill_super()

2010-01-26 22:22:25 -05:00

btrfs

Merge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable

2010-02-15 19:56:21 -08:00

cachefiles

CacheFiles: Fix a race in cachefiles_delete_object() vs rename

2010-02-20 10:06:35 -05:00

cifs

Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

2010-02-10 07:16:44 -08:00

coda

sysctl: Drop & in front of every proc_handler.

2009-11-18 08:37:40 -08:00

configfs

Fix configfs leak

2010-01-14 09:05:42 -05:00

cramfs

…

debugfs

get rid of pointless checks after simple_pin_fs()

2010-01-26 22:22:26 -05:00

devpts

devpts_get_tty() should validate inode

2009-12-11 15:18:05 -08:00

dlm

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

2009-12-10 09:33:59 -08:00

ecryptfs

ecryptfs: use after free

2010-01-19 22:36:06 -06:00

efs

get rid of BKL in fs/efs

2009-06-17 00:36:36 -04:00

exofs

exofs: simple_write_end does not mark_inode_dirty

2010-01-05 09:14:32 +02:00

exportfs

nfs: new subdir Documentation/filesystems/nfs

2009-10-27 19:34:04 -04:00

ext2

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2009-12-16 12:04:02 -08:00

ext3

ext3: Replace lock/unlock_super() with an explicit lock for resizing

2009-12-23 13:44:12 +01:00

ext4

ext4: Fix quota accounting error with fallocate

2010-01-25 04:00:31 -05:00

fat

Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6

2009-12-16 10:29:26 -08:00

freevxfs

headers: smp_lock.h redux

2009-07-12 12:22:34 -07:00

fscache

FS-Cache: Avoid maybe-used-uninitialised warning on variable

2009-12-16 07:20:13 -08:00

fuse

mm: flush dcache before writing into page to avoid alias

2010-02-02 18:11:21 -08:00

gfs2

GFS2: Fix bmap allocation corner-case bug

2010-02-12 10:16:14 +00:00

hfs

hfs: fix a potential buffer overflow

2009-12-15 08:53:10 -08:00

hfsplus

hfsplus: refuse to mount volumes larger than 2TB

2009-10-29 07:39:27 -07:00

hostfs

hostfs: set maximum filesize in superblock for proper LFS support

2009-06-30 18:56:03 -07:00

hpfs

hpfs: use bitmap_weight()

2009-12-16 07:20:06 -08:00

hppfs

hppfs: handle ->put_link()

2010-01-14 09:05:25 -05:00

hugetlbfs

Untangling ima mess, part 1: alloc_file()

2009-12-16 12:16:47 -05:00

isofs

Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linux

2009-12-16 10:43:34 -08:00

jbd

jbd: jbd-debug and jbd2-debug should be writable

2009-12-23 13:44:13 +01:00

jbd2

jbd2: don't use __GFP_NOFAIL in journal_init_common()

2009-12-23 08:05:15 -05:00

jffs2

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

2009-12-16 12:04:02 -08:00

jfs

jfs: Fix 32bit build warning

2009-12-22 12:27:35 -05:00

lockd

Merge branch 'for-2.6.33' of git://linux-nfs.org/~bfields/linux

2009-12-16 10:43:34 -08:00

minix

V3 minixfs: add missing directory type checking

2009-09-23 07:39:57 -07:00

ncpfs

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

nfs

NFS: Too many GETATTR and ACCESS calls after direct I/O

2010-02-15 19:53:43 -08:00

nfs_common

…

nfsd

vfs: don't call ima_file_check() unconditionally in nfsd_open()

2010-02-20 00:47:31 -05:00

nilfs2

nilfs2: fix potential leak of dirty data on umount

2010-01-31 14:57:31 +09:00

nls

Merge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6

2009-09-30 09:31:14 -07:00

notify

inotify: only warn once for inotify problems

2010-01-15 14:49:23 -08:00

ntfs

kill I_LOCK

2009-12-17 11:03:25 -05:00

ocfs2

ocfs2/cluster: Make o2net connect messages KERN_NOTICE

2010-02-08 13:02:28 -08:00

omfs

tree-wide: fix assorted typos all over the place

2009-12-04 15:39:55 +01:00

openpromfs

…

partitions

partitions: read whole sector with EFI GPT header

2009-11-23 09:29:58 +01:00

proc

Switch proc/self to nd_set_link()

2010-02-19 10:25:41 -05:00

qnx4

qnx4: use hweight8

2009-12-16 07:20:18 -08:00

quota

quota: Fix dquot_transfer for filesystems different from ext4

2010-01-11 13:06:41 +01:00

ramfs

nommu: fix shared mmap after truncate shrinkage problems

2010-01-16 12:15:40 -08:00

reiserfs

reiserfs: Fix softlockup while waiting on an inode

2010-02-14 19:07:56 +01:00

romfs

fix leak in romfs_fill_super()

2010-01-26 22:22:26 -05:00

smbfs

fs: Make unload_nls() NULL pointer safe

2009-09-24 07:47:42 -04:00

squashfs

const: mark remaining super_operations const

2009-09-22 07:17:24 -07:00

sysfs

sysfs: sysfs_sd_setattr set iattrs unconditionally

2010-02-16 15:42:42 -08:00

sysv

get rid of BKL in fs/sysv

2009-06-17 00:36:37 -04:00

ubifs

lib: Introduce generic list_sort function

2010-01-12 21:02:00 -08:00

udf

udf: Avoid IO in udf_clear_inode

2009-12-14 21:40:04 +01:00

ufs

ufs: NFS support

2009-12-16 07:20:06 -08:00

xfs

xfs: increase readdir buffer size

2010-03-01 16:33:41 -06:00

aio.c

aio: remove unused field

2009-12-16 07:20:13 -08:00

anon_inodes.c

Sanitize f_flags helpers

2009-12-22 12:27:34 -05:00

attr.c

truncate: new helpers

2009-09-24 08:41:47 -04:00

bad_inode.c

…

binfmt_aout.c

Split 'flush_old_exec' into two functions

2010-01-29 08:22:01 -08:00

binfmt_elf_fdpic.c

Split 'flush_old_exec' into two functions

2010-01-29 08:22:01 -08:00

binfmt_elf.c

Split 'flush_old_exec' into two functions

2010-01-29 08:22:01 -08:00

binfmt_em86.c

…

binfmt_flat.c

Split 'flush_old_exec' into two functions

2010-01-29 08:22:01 -08:00

binfmt_misc.c

…

binfmt_script.c

…

binfmt_som.c

Split 'flush_old_exec' into two functions

2010-01-29 08:22:01 -08:00

bio-integrity.c

block: fix bugs in bio-integrity mempool usage

2010-01-30 20:28:19 +01:00

bio.c

block: fix bio_add_page for non trivial merge_bvec_fn case

2010-01-28 15:08:29 +01:00

block_dev.c

freeze_bdev: don't deactivate successfully frozen MS_RDONLY sb

2010-02-07 03:06:21 -05:00

buffer.c

Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block

2009-09-25 09:27:30 -07:00

char_dev.c

fs/char_dev.c: remove useless loop

2009-09-24 07:21:03 -07:00

compat_binfmt_elf.c

…

compat_ioctl.c

Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6

2010-02-11 14:05:55 -08:00

compat.c

compat.c: Remove dependence on nfsd private headers

2009-12-14 18:12:10 -05:00

dcache.c

libfs: move EXPORT_SYMBOL for d_alloc_name

2009-12-16 12:16:48 -05:00

dcookies.c

…

direct-io.c

dio: fix use-after-free

2009-12-17 04:52:13 -05:00

drop_caches.c

sysctl: remove "struct file *" argument of ->proc_handler

2009-09-24 07:21:04 -07:00

eventfd.c

eventfd - allow atomic read and waitqueue remove

2010-01-25 12:26:38 -02:00

eventpoll.c

anonfd: Allow making anon files read-only

2009-12-22 12:27:34 -05:00

exec.c

fs/exec.c: fix initial stack reservation

2010-02-22 19:50:34 -08:00

fcntl.c

Fix race in tty_fasync() properly

2010-02-07 10:26:01 -08:00

fifo.c

…

file_table.c

Take ima_file_free() to proper place.

2010-02-07 03:07:29 -05:00

file.c

headers: remove sched.h from interrupt.h

2009-10-11 11:20:58 -07:00

filesystems.c

…

fs_struct.c

…

fs-writeback.c

writeback: add missing kernel-doc notation

2010-01-02 10:09:44 -08:00

generic_acl.c

make generic_acl slightly more generic

2009-12-16 12:16:49 -05:00

inode.c

kill I_LOCK

2009-12-17 11:03:25 -05:00

internal.h

Fix f_flags/f_mode in case of lookup_instantiate_filp() from open(pathname, 3)

2009-12-22 12:27:34 -05:00

ioctl.c

__generic_block_fiemap(): fix for files bigger than 4GB

2009-11-12 07:26:01 -08:00

ioprio.c

…

Kconfig

Revert "task_struct: make journal_info conditional"

2009-12-17 13:23:24 -08:00

Kconfig.binfmt

…

libfs.c

libfs: move EXPORT_SYMBOL for d_alloc_name

2009-12-16 12:16:48 -05:00

locks.c

const: make lock_manager_operations const

2009-09-22 07:17:25 -07:00

Makefile

…

mbcache.c

…

mpage.c

…

namei.c

fix LOOKUP_FOLLOW on automount "symlinks"

2010-02-19 03:56:42 -05:00

namespace.c

do_add_mount() should sanitize mnt_flags

2010-01-16 13:07:36 -05:00

nfsctl.c

vfs: nfsctl.c un-used nfsd #includes

2009-12-14 18:12:11 -05:00

no-block.c

…

open.c

Sanitize f_flags helpers

2009-12-22 12:27:34 -05:00

pipe.c

fs: no games with DCACHE_UNHASHED

2009-12-17 10:51:40 -05:00

pnode.c

…

pnode.h

…

posix_acl.c

…

read_write.c

sendfile(): check f_op.splice_write() rather than f_op.sendpage()

2009-11-04 09:09:52 +01:00

read_write.h

…

readdir.c

…

select.c

headers: remove sched.h from poll.h

2009-10-04 15:05:10 -07:00

seq_file.c

vfs: seq_file: add helpers for data filling

2009-09-24 07:47:35 -04:00

signalfd.c

anonfd: Allow making anon files read-only

2009-12-22 12:27:34 -05:00

splice.c

sendfile(): check f_op.splice_write() rather than f_op.sendpage()

2009-11-04 09:09:52 +01:00

stack.c

VFS/fsstack: handle 32-bit smp + preempt + large files in fsstack_copy_inode_size

2009-12-17 10:58:17 -05:00

stat.c

Add unlocked version of inode_add_bytes() function

2009-12-23 13:33:54 +01:00

super.c

vfs: get_sb_single() - do not pass options twice

2009-12-23 11:23:43 -08:00

sync.c

fold do_sync_file_range into sys_sync_file_range

2009-12-17 11:03:25 -05:00

timerfd.c

anonfd: Allow making anon files read-only

2009-12-22 12:27:34 -05:00

utimes.c

…

xattr_acl.c

VFS: Use GFP_NOFS in posix_acl_from_xattr()

2009-12-03 11:48:07 +00:00

xattr.c

sanitize xattr handler prototypes

2009-12-16 12:16:49 -05:00