From: David Howells <dhowells@redhat.com>
To: JeffleXu <jefflexu@linux.alibaba.com>
Cc: dhowells@redhat.com, linux-cachefs@redhat.com, xiang@kernel.org,
chao@kernel.org, linux-erofs@lists.ozlabs.org,
torvalds@linux-foundation.org, gregkh@linuxfoundation.org,
willy@infradead.org, linux-fsdevel@vger.kernel.org,
joseph.qi@linux.alibaba.com, bo.liu@linux.alibaba.com,
tao.peng@linux.alibaba.com, gerry@linux.alibaba.com,
eguan@linux.alibaba.com, linux-kernel@vger.kernel.org,
luodaowen.backend@bytedance.com, tianzichen@kuaishou.com,
fannaihao@baidu.com, zhangjiachen.jaycee@bytedance.com
Subject: Re: EMFILE/ENFILE mitigation needed in erofs?
Date: Thu, 21 Apr 2022 18:57:40 +0100 [thread overview]
Message-ID: <1484181.1650563860@warthog.procyon.org.uk> (raw)
In-Reply-To: <2067a5c7-4e24-f449-4676-811d12e9ab72@linux.alibaba.com>
JeffleXu <jefflexu@linux.alibaba.com> wrote:
> 2. Our user daemon will configure rlimit-nofile to a reasonably large
> (e.g. 1 million) value, so that it won't fail when trying to allocate fds.
There's a system-wide limit also; simply increasing the rlimit won't override
that.
David
WARNING: multiple messages have this Message-ID (diff)
From: David Howells <dhowells@redhat.com>
To: JeffleXu <jefflexu@linux.alibaba.com>
Cc: tianzichen@kuaishou.com, linux-erofs@lists.ozlabs.org,
fannaihao@baidu.com, willy@infradead.org,
linux-kernel@vger.kernel.org, dhowells@redhat.com,
joseph.qi@linux.alibaba.com, zhangjiachen.jaycee@bytedance.com,
linux-cachefs@redhat.com, gregkh@linuxfoundation.org,
linux-fsdevel@vger.kernel.org, luodaowen.backend@bytedance.com,
gerry@linux.alibaba.com, torvalds@linux-foundation.org
Subject: Re: EMFILE/ENFILE mitigation needed in erofs?
Date: Thu, 21 Apr 2022 18:57:40 +0100 [thread overview]
Message-ID: <1484181.1650563860@warthog.procyon.org.uk> (raw)
In-Reply-To: <2067a5c7-4e24-f449-4676-811d12e9ab72@linux.alibaba.com>
JeffleXu <jefflexu@linux.alibaba.com> wrote:
> 2. Our user daemon will configure rlimit-nofile to a reasonably large
> (e.g. 1 million) value, so that it won't fail when trying to allocate fds.
There's a system-wide limit also; simply increasing the rlimit won't override
that.
David
next prev parent reply other threads:[~2022-04-21 17:58 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-15 12:35 [PATCH v9 00/21] fscache,erofs: fscache-based on-demand read semantics Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 00/21] fscache, erofs: " Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 01/21] cachefiles: extract write routine Jeffle Xu
2022-04-15 12:35 ` Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 02/21] cachefiles: notify user daemon when looking up cookie Jeffle Xu
2022-04-15 12:35 ` Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 03/21] cachefiles: unbind cachefiles gracefully in on-demand mode Jeffle Xu
2022-04-15 12:35 ` Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 04/21] cachefiles: notify user daemon when withdrawing cookie Jeffle Xu
2022-04-15 12:35 ` Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 05/21] cachefiles: implement on-demand read Jeffle Xu
2022-04-15 12:35 ` Jeffle Xu
2022-04-15 12:35 ` [PATCH v9 06/21] cachefiles: enable on-demand read mode Jeffle Xu
2022-04-15 12:35 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 07/21] cachefiles: add tracepoints for " Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 08/21] cachefiles: document " Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 09/21] erofs: make erofs_map_blocks() generally available Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 10/21] erofs: add fscache mode check helper Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 7:53 ` Gao Xiang
2022-04-21 7:53 ` Gao Xiang
2022-04-15 12:36 ` [PATCH v9 11/21] erofs: register fscache volume Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 12/21] erofs: add fscache context helper functions Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 13/21] erofs: add anonymous inode caching metadata for data blobs Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 14/21] erofs: add erofs_fscache_read_folios() helper Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 15/21] erofs: register fscache context for primary data blob Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-15 12:36 ` [PATCH v9 16/21] erofs: register fscache context for extra data blobs Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 10:58 ` Gao Xiang
2022-04-21 10:58 ` Gao Xiang
2022-04-15 12:36 ` [PATCH v9 17/21] erofs: implement fscache-based metadata read Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 13:03 ` Gao Xiang
2022-04-21 13:03 ` Gao Xiang
2022-04-15 12:36 ` [PATCH v9 18/21] erofs: implement fscache-based data read for non-inline layout Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 11:13 ` Gao Xiang
2022-04-21 11:13 ` Gao Xiang
2022-04-15 12:36 ` [PATCH v9 19/21] erofs: implement fscache-based data read for inline layout Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 11:14 ` Gao Xiang
2022-04-21 11:14 ` Gao Xiang
2022-04-15 12:36 ` [PATCH v9 20/21] erofs: implement fscache-based data readahead Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 11:51 ` Gao Xiang
2022-04-21 11:51 ` Gao Xiang
2022-04-15 12:36 ` [PATCH v9 21/21] erofs: add 'fsid' mount option Jeffle Xu
2022-04-15 12:36 ` Jeffle Xu
2022-04-21 11:59 ` Gao Xiang
2022-04-21 11:59 ` Gao Xiang
2022-04-20 8:52 ` [PATCH v9 00/21] fscache, erofs: fscache-based on-demand read semantics JiaZhu
2022-04-20 8:52 ` JiaZhu
2022-04-21 13:24 ` [PATCH v9 01/21] cachefiles: extract write routine David Howells
2022-04-21 13:24 ` David Howells
2022-04-21 13:57 ` [PATCH v9 02/21] cachefiles: notify user daemon when looking up cookie David Howells
2022-04-21 13:57 ` David Howells
2022-04-21 14:47 ` JeffleXu
2022-04-21 14:47 ` JeffleXu
2022-04-21 14:02 ` [PATCH v9 03/21] cachefiles: unbind cachefiles gracefully in on-demand mode David Howells
2022-04-21 14:02 ` David Howells
2022-04-22 2:44 ` JeffleXu
2022-04-22 2:44 ` JeffleXu
2022-04-21 14:05 ` [PATCH v9 04/21] cachefiles: notify user daemon when withdrawing cookie David Howells
2022-04-21 14:05 ` David Howells
2022-04-21 14:57 ` JeffleXu
2022-04-21 14:57 ` JeffleXu
2022-04-21 14:14 ` [PATCH v9 05/21] cachefiles: implement on-demand read David Howells
2022-04-21 14:14 ` David Howells
2022-04-21 15:00 ` JeffleXu
2022-04-21 15:00 ` JeffleXu
2022-04-21 14:17 ` [PATCH v9 06/21] cachefiles: enable on-demand read mode David Howells
2022-04-21 14:17 ` David Howells
2022-04-21 15:11 ` JeffleXu
2022-04-21 15:11 ` JeffleXu
2022-04-21 14:19 ` [PATCH v9 07/21] cachefiles: add tracepoints for " David Howells
2022-04-21 14:19 ` David Howells
2022-04-21 14:47 ` [PATCH v9 08/21] cachefiles: document " David Howells
2022-04-21 14:47 ` David Howells
2022-04-22 3:10 ` JeffleXu
2022-04-22 3:10 ` JeffleXu
2022-04-21 14:54 ` EMFILE/ENFILE mitigation needed in erofs? David Howells
2022-04-21 14:54 ` David Howells
2022-04-21 16:14 ` JeffleXu
2022-04-21 16:14 ` JeffleXu
2022-04-21 17:57 ` David Howells [this message]
2022-04-21 17:57 ` David Howells
2022-04-21 18:16 ` Gao Xiang
2022-04-21 18:16 ` Gao Xiang
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