From: Christoph Hellwig <hch@infradead.org>
To: David Howells <dhowells@redhat.com>
Cc: torvalds@osdl.org, akpm@osdl.org, steved@redhat.com,
sct@redhat.com, aviro@redhat.com, linux-fsdevel@vger.kernel.org,
linux-cachefs@redhat.com, nfsv4@linux-nfs.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/7] FS-Cache: Avoid ENFILE checking for kernel-specific open files
Date: Thu, 20 Apr 2006 18:18:57 +0100 [thread overview]
Message-ID: <20060420171857.GA21659@infradead.org> (raw)
In-Reply-To: <20060420165932.9968.40376.stgit@warthog.cambridge.redhat.com>
On Thu, Apr 20, 2006 at 05:59:33PM +0100, David Howells wrote:
> Make it possible to avoid ENFILE checking for kernel specific open files, such
> as are used by the CacheFiles module.
>
> After, for example, tarring up a kernel source tree over the network, the
> CacheFiles module may easily have 20000+ files open in the backing filesystem,
> thus causing all non-root processes to be given error ENFILE when they try to
> open a file, socket, pipe, etc..
No, just increase the limit. The whole point of the limit is to avoid resource
exaustion. A file doesn't use any less ressources just becuase it's opened
from kernelspace. In doubt increase the limit or even the default limit.
next prev parent reply other threads:[~2006-04-20 17:19 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-04-20 16:59 [PATCH 1/7] FS-Cache: Provide a filesystem-specific sync'able page bit David Howells
2006-04-20 16:59 ` [PATCH 2/7] FS-Cache: Add notification of page becoming writable to VMA ops David Howells
2006-04-20 17:40 ` Zach Brown
2006-04-20 18:27 ` Anton Altaparmakov
2006-04-20 16:59 ` [PATCH 3/7] FS-Cache: Avoid ENFILE checking for kernel-specific open files David Howells
2006-04-20 17:18 ` Christoph Hellwig [this message]
2006-04-20 18:06 ` David Howells
2006-04-20 18:06 ` David Howells
2006-04-21 0:11 ` Andrew Morton
2006-04-21 0:11 ` Andrew Morton
2006-04-21 10:57 ` David Howells
2006-04-21 10:57 ` David Howells
2006-04-21 0:07 ` Andrew Morton
2006-04-21 0:07 ` Andrew Morton
2006-04-21 12:33 ` David Howells
2006-04-21 12:33 ` David Howells
2006-04-21 18:22 ` Andrew Morton
2006-04-21 18:22 ` Andrew Morton
2006-04-21 19:29 ` David Howells
2006-04-21 19:29 ` David Howells
2006-04-20 16:59 ` [PATCH 4/7] FS-Cache: Export find_get_pages() David Howells
2006-04-20 17:19 ` Christoph Hellwig
2006-04-20 17:19 ` Christoph Hellwig
2006-04-20 17:45 ` David Howells
2006-04-20 17:45 ` David Howells
2006-04-21 0:15 ` Andrew Morton
2006-04-21 0:15 ` Andrew Morton
2006-04-21 13:02 ` David Howells
2006-04-21 13:02 ` David Howells
2006-04-20 16:59 ` [PATCH 5/7] FS-Cache: Generic filesystem caching facility David Howells
2006-04-21 0:46 ` Andrew Morton
2006-04-21 0:46 ` Andrew Morton
2006-04-21 14:15 ` David Howells
2006-04-21 14:15 ` David Howells
2006-04-21 18:38 ` Andrew Morton
2006-04-21 18:38 ` Andrew Morton
2006-04-21 19:33 ` David Howells
2006-04-21 19:33 ` David Howells
2006-04-20 16:59 ` [PATCH 6/7] FS-Cache: Make kAFS use FS-Cache David Howells
2006-04-20 16:59 ` [PATCH 7/7] FS-Cache: CacheFiles: A cache that backs onto a mounted filesystem David Howells
2006-04-21 0:57 ` Andrew Morton
2006-04-21 0:57 ` Andrew Morton
2006-04-21 1:16 ` Andrew Morton
2006-04-21 1:16 ` Andrew Morton
2006-04-21 14:49 ` David Howells
2006-04-21 14:49 ` David Howells
2006-04-21 0:12 ` [PATCH 1/7] FS-Cache: Provide a filesystem-specific sync'able page bit Andrew Morton
2006-04-21 0:12 ` Andrew Morton
2006-04-21 10:22 ` David Howells
2006-04-21 10:22 ` David Howells
2006-04-21 10:33 ` Andrew Morton
2006-04-21 10:33 ` Andrew Morton
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