Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve readdir scalability v2 | KernelTrap

Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve readdir scalability v2

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From: Borislav Petkov

Subject: Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve readdir scalability v2

Date: Saturday, January 2, 2010 - 8:40 am

On Fri, Jan 01, 2010 at 03:10:49PM -0800, Linus Torvalds wrote:
quoted text> And by "testing" I mean both the "yes, this second version also breaks the 
> lockdep chain and avoids the warning",

Yes, it survived a couple of suspend/resume cycles so far.

-- 
Regards/Gruss,
    Boris.
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Messages in current thread:

Linux 2.6.33-rc2 - Merry Christmas ..., Linus Torvalds, (Thu Dec 24, 3:00 pm)

-tip: origin tree boot crash, Ingo Molnar, (Fri Dec 25, 3:27 am)

Re: Linux 2.6.33-rc2 - Blank screen for Intel KMS, Miguel Calleja, (Fri Dec 25, 6:10 am)

Re: -tip: origin tree boot crash, Dmitry Torokhov, (Fri Dec 25, 12:49 pm)

Re: Linux 2.6.33-rc2 - Merry Christmas ..., Borislav Petkov, (Fri Dec 25, 1:00 pm)

Re: Linux 2.6.33-rc2 - Merry Christmas ..., Borislav Petkov, (Fri Dec 25, 2:50 pm)

Re: Linux 2.6.33-rc2 - Merry Christmas ..., Jesse Barnes, (Fri Dec 25, 11:00 pm)

Re: Linux 2.6.33-rc2 - Merry Christmas ..., Borislav Petkov, (Sat Dec 26, 1:02 am)

EHCI resume sysfs duplicates (was: Re: Linux 2.6.33-rc2 - ..., Borislav Petkov, (Sat Dec 26, 2:36 am)

drm_vm.c:drm_mmap: possible circular locking dependency de ..., Borislav Petkov, (Sat Dec 26, 2:45 am)

Re: -tip: origin tree boot crash, Len Brown, (Sat Dec 26, 1:17 pm)

Re: -tip: origin tree boot crash, Len Brown, (Sat Dec 26, 1:19 pm)

Re: -tip: origin tree boot crash, Len Brown, (Sat Dec 26, 9:20 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., KOSAKI Motohiro, (Sun Dec 27, 5:40 pm)

Re: -tip: origin tree boot crash, Ingo Molnar, (Mon Dec 28, 2:44 am)

Re: -tip: origin tree boot crash, Ingo Molnar, (Mon Dec 28, 5:01 am)

Re: -tip: origin tree boot crash, Paul Rolland, (Mon Dec 28, 8:02 am)

Re: -tip: origin tree boot crash, Paul Rolland, (Mon Dec 28, 9:15 am)

Re: -tip: origin tree boot crash, Paul Rolland, (Mon Dec 28, 9:53 am)

Re: -tip: origin tree boot crash, Dmitry Torokhov, (Mon Dec 28, 1:17 pm)

Re: Linux 2.6.33-rc2 - Blank screen for Intel KMS, Miguel Calleja, (Tue Dec 29, 2:50 am)

Re: Linux 2.6.33-rc2 - Blank screen for Intel KMS, Rafael J. Wysocki, (Tue Dec 29, 7:01 am)

Re: -tip: origin tree boot crash, Len Brown, (Tue Dec 29, 11:14 pm)

[PATCH] wmi: check find_guid() return value to prevent oops, Len Brown, (Tue Dec 29, 11:19 pm)

[PATCH] dell-wmi: sys_init_module: 'dell_wmi'->init suspic ..., Len Brown, (Tue Dec 29, 11:21 pm)

Re: -tip: origin tree boot crash, Paul Rolland, (Wed Dec 30, 12:13 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Linus Torvalds, (Wed Dec 30, 2:10 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Wed Dec 30, 2:34 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Linus Torvalds, (Wed Dec 30, 3:03 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Thu Dec 31, 1:40 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Thu Dec 31, 1:40 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Linus Torvalds, (Thu Dec 31, 12:04 pm)

[PATCH] sysfs: Cache the last sysfs_dirent to improve read ..., Eric W. Biederman, (Fri Jan 1, 6:58 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Fri Jan 1, 8:16 am)

Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve ..., Borislav Petkov, (Fri Jan 1, 8:33 am)

Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve ..., Linus Torvalds, (Fri Jan 1, 11:56 am)

[PATCH] sysfs: Cache the last sysfs_dirent to improve read ..., Eric W. Biederman, (Fri Jan 1, 3:43 pm)

Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve ..., Linus Torvalds, (Fri Jan 1, 4:10 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Tejun Heo, (Fri Jan 1, 7:59 pm)

Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve ..., Greg KH, (Fri Jan 1, 10:59 pm)

Re: [PATCH] sysfs: Cache the last sysfs_dirent to improve ..., Borislav Petkov, (Sat Jan 2, 8:40 am)

[PATCH] sysfs: Add lockdep annotations for the sysfs activ ..., Eric W. Biederman, (Sat Jan 2, 2:37 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Sat Jan 2, 2:49 pm)

Re: [PATCH] sysfs: Add lockdep annotations for the sysfs a ..., Tejun Heo, (Sat Jan 2, 5:02 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Tejun Heo, (Sat Jan 2, 5:32 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Sat Jan 2, 7:06 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Tejun Heo, (Sat Jan 2, 10:01 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Sat Jan 2, 10:38 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Tejun Heo, (Sat Jan 2, 11:05 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Dmitry Torokhov, (Sun Jan 3, 12:47 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Sun Jan 3, 3:57 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Sun Jan 3, 4:14 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Dmitry Torokhov, (Mon Jan 4, 11:57 am)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Dmitry Torokhov, (Mon Jan 4, 12:16 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Eric W. Biederman, (Mon Jan 4, 12:43 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Dmitry Torokhov, (Mon Jan 4, 2:12 pm)

Re: drm_vm.c:drm_mmap: possible circular locking dependenc ..., Tejun Heo, (Mon Jan 4, 4:09 pm)

Re: [PATCH] sysfs: Add lockdep annotations for the sysfs a ..., Ming Lei, (Sun Jan 17, 9:26 am)

Re: [PATCH] sysfs: Add lockdep annotations for the sysfs a ..., Eric W. Biederman, (Sun Jan 17, 10:18 am)

Re: [PATCH] sysfs: Add lockdep annotations for the sysfs a ..., Dominik Brodowski, (Sun Jan 17, 11:03 am)

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