Dmitry Monakhov 3d287de3b8 ext4: optimize orphan_list handling for ext4_setattr ... Surprisingly chown() on ext4 is not SMP scalable operation. Due to unconditional orphan_del(NULL, inode) in ext4_setattr() result in significant performance overhead because of global orphan mutex, especially in no-journal mode (where orphan_add() is noop). It is possible to skip explicit orphan_del if possible. Results of fchown() micro-benchmark in no-journal mode while (1) { iteration++; fchown(fd, uid, gid); fchown(fd, uid + 1, gid + 1) } measured: iterations per millisecond | nr_tasks | w/o patch | with patch | | 1 | 142 | 185 | | 4 | 109 | 642 | Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>		2010-10-27 22:08:46 -04:00
..
acl.c	ext4: update ctime when changing the file's permission by setfacl	2010-06-15 12:19:59 -04:00
acl.h
balloc.c	ext4: rename mark_bitmap_end() to ext4_mark_bitmap_end()	2010-10-27 21:30:15 -04:00
bitmap.c
block_validity.c	ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()	2010-10-27 21:30:14 -04:00
dir.c	ext4: improve llseek error handling for overly large seek offsets	2010-10-27 21:30:06 -04:00
ext4_extents.h	ext4: rename {ext,idx}_pblock and inline small extent functions	2010-10-27 21:30:14 -04:00
ext4_jbd2.c	ext4: Pass line numbers to ext4_error() and friends	2010-07-27 11:56:40 -04:00
ext4_jbd2.h	ext4: Pass line numbers to ext4_error() and friends	2010-07-27 11:56:40 -04:00
ext4.h	ext4: move ext4_mb_{get,put}_buddy_cache_lock and make them static	2010-10-27 21:30:15 -04:00
extents.c	ext4: fix compile error in ext4_fallocate()	2010-10-27 21:30:15 -04:00
file.c	ext4: improve llseek error handling for overly large seek offsets	2010-10-27 21:30:06 -04:00
fsync.c	ext4: move flush_completed_IO to fs/ext4/fsync.c and make it static	2010-10-27 21:30:14 -04:00
hash.c
ialloc.c	ext4: rename mark_bitmap_end() to ext4_mark_bitmap_end()	2010-10-27 21:30:15 -04:00
inode.c	ext4: optimize orphan_list handling for ext4_setattr	2010-10-27 22:08:46 -04:00
ioctl.c	ext4: Drop whitespace at end of lines	2010-05-17 07:00:00 -04:00
Kconfig
Makefile	ext4: use bio layer instead of buffer layer in mpage_da_submit_io	2010-10-27 21:30:10 -04:00
mballoc.c	ext4: move ext4_mb_{get,put}_buddy_cache_lock and make them static	2010-10-27 21:30:15 -04:00
mballoc.h
migrate.c	ext4: rename {ext,idx}_pblock and inline small extent functions	2010-10-27 21:30:14 -04:00
move_extent.c	ext4: rename {ext,idx}_pblock and inline small extent functions	2010-10-27 21:30:14 -04:00
namei.c	ext4: use search_dirblock() in ext4_dx_find_entry()	2010-10-27 21:30:08 -04:00
page-io.c	ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()	2010-10-27 21:30:14 -04:00
resize.c	ext4: rename mark_bitmap_end() to ext4_mark_bitmap_end()	2010-10-27 21:30:15 -04:00
super.c	ext4: fix unbalanced mutex unlock in error path of ext4_li_request_new	2010-10-27 22:08:42 -04:00
symlink.c	ext4: symlink must be handled via filesystem specific operation	2010-05-16 02:00:00 -04:00
xattr_security.c	ext4: constify xattr_handler	2010-05-21 18:31:19 -04:00
xattr_trusted.c	ext4: constify xattr_handler	2010-05-21 18:31:19 -04:00
xattr_user.c	ext4: constify xattr_handler	2010-05-21 18:31:19 -04:00
xattr.c	ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()	2010-10-27 21:30:14 -04:00
xattr.h	ext4: rename {exit,init}_ext4_*() to ext4_{exit,init}_*()	2010-10-27 21:30:14 -04:00