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Date: Wed, 27 Oct 2010 16:01:45 -0400 From: "J. Bruce Fields" <bfields@...ldses.org> To: Arnd Bergmann <arnd@...db.de> Cc: Linus Torvalds <torvalds@...ux-foundation.org>, Christoph Hellwig <hch@...radead.org>, Bryan Schumaker <bjschuma@...app.com>, linux-nfs@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: nfsd changes for 2.6.37 On Wed, Oct 27, 2010 at 09:48:47PM +0200, Arnd Bergmann wrote: > On Wednesday 27 October 2010 20:43:59 Linus Torvalds wrote: > > On Wed, Oct 27, 2010 at 11:42 AM, Linus Torvalds > > <torvalds@...ux-foundation.org> wrote: > > > > > > Feel free to edit the message/patch to your hearts content. > > > > Oh, and if you want me to just commit this part, I can do so. It > > doesn't make much sense without the other parts to actually make it > > useful, though, so it probably makes more sense to come with them. > > Once Bruce is happy with the test results, you can pull it from > > git+ssh://master.kernel.org/pub/scm/linux/kernel/git/arnd/bkl.git flock Not the useful url for us hoi polloi out here. OK, looking at git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl.git flock.... > I've rewritten all the changelogs to make more sense as a series, > and split out the bits that turn lock_flocks into a spinlock to > come last, so we get a bisectable series. > > The contents are left unchanged. Looks fine to me! I haven't retested that, but I can see that the result is identical to what I tested. (You're missing Linus's comment fix, though, unless I'm confused.) --b. > > Arnd > --- > > commit b3426739cc8f7c7dd127ca8dad5e25195930cac1 > Author: Arnd Bergmann <arnd@...db.de> > Date: Wed Oct 27 21:39:58 2010 +0200 > > locks: turn lock_flocks into a spinlock > > Nothing depends on lock_flocks using the BKL > any more, so we can do the switch over to > a private spinlock. > > Signed-off-by: Arnd Bergmann <arnd@...db.de> > > fs/Kconfig | 1 - > fs/locks.c | 5 +++-- > 2 files changed, 3 insertions(+), 3 deletions(-) > > commit 55d3ff97c5c0b3dce39f705e2b1fe85818891822 > Author: Linus Torvalds <torvalds@...ux-foundation.org> > Date: Wed Oct 27 12:38:12 2010 -0400 > > locks: avoid fasync allocation under lock_flocks > > This splits fasync_helper into four functions: fasync_alloc, > fasync_free, fasync_insert_entry and fasync_remove_entry, > in order to allow the lease handling to call them directly > instead of going through fasync_helper. > > The fasync_helper interface really doesn't make sense outside > of ->fasync file operations, which use the same calling > conventions of passing flags in and out as the helper. > > After the change, fcntl_setlease can simply allocate the > new fasync_struct outside of lock_flocks, which is required > to turn that into a spinlock. > > Signed-off-by: Linus Torvalds <torvalds@...ux-foundation.org> > [bfields@...hat.com: rebase on top of my changes to Arnd's patch] > Signed-off-by: J. Bruce Fields <bfields@...hat.com> > [arnd: rewrite changelog text] > Signed-off-by: Arnd Bergmann <arnd@...db.de> > > fs/fcntl.c | 66 +++++++++++++++++++++++++++++++++++++++------------ > fs/locks.c | 18 +++++++++++++- > include/linux/fs.h | 5 ++++ > 3 files changed, 72 insertions(+), 17 deletions(-) > > commit c5b1f0d92c36851aca09ac6c7c0c4f9690ac14f3 > Author: Arnd Bergmann <arnd@...db.de> > Date: Wed Oct 27 15:46:08 2010 +0200 > > locks/nfsd: allocate file lock outside of spinlock > > As suggested by Christoph Hellwig, this moves allocation > of new file locks out of generic_setlease into the > callers, nfs4_open_delegation and fcntl_setlease in order > to allow GFP_KERNEL allocations when lock_flocks has > become a spinlock. > > Signed-off-by: Arnd Bergmann <arnd@...db.de> > Acked-by: J. Bruce Fields <bfields@...hat.com> > > fs/locks.c | 36 ++++++++++++------------------------ > fs/nfsd/nfs4state.c | 26 +++++++++++++++----------- > include/linux/fs.h | 1 + > 3 files changed, 28 insertions(+), 35 deletions(-) > > commit a282a1fa6b23bd21ba0b86e53ed2a316b001836f > Author: J. Bruce Fields <bfields@...hat.com> > Date: Tue Oct 26 18:25:30 2010 -0400 > > lockd: fix nlmsvc_notify_blocked locking > > nlmsvc_notify_blocked walks the nlm_blocked list, > which requires nlm_blocked_lock. > > Signed-off-by: J. Bruce Fields <bfields@...hat.com> > Signed-off-by: Arnd Bergmann <arnd@...db.de> > > fs/lockd/svclock.c | 6 ++++-- > 1 files changed, 4 insertions(+), 2 deletions(-) > > commit 763641d81202834e9d64de2019d1edec12868f4f > Author: Arnd Bergmann <arnd@...db.de> > Date: Tue Oct 26 22:55:40 2010 +0200 > > lockd: push lock_flocks down > > lockd should use lock_flocks() instead of lock_kernel() > to lock against posix locks accessing the i_flock list. > > This is a prerequisite to turning lock_flocks into a > spinlock. > > Signed-off-by: Arnd Bergmann <arnd@...db.de> > Acked-by: J. Bruce Fields <bfields@...hat.com> > > fs/lockd/svc.c | 11 ----------- > fs/lockd/svcsubs.c | 9 ++++++++- > fs/nfs/Kconfig | 1 - > fs/nfsd/Kconfig | 1 - > 4 files changed, 8 insertions(+), 14 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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