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| author | Jia Zhu <zhujia.zj@bytedance.com> | 2023-11-20 07:14:22 +0300 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-11-25 18:03:57 +0300 |
| commit | e73fa11a356ca0905c3cc648eaacc6f0f2d2c8b3 (patch) | |
| tree | 43eee30a526dcd025ab72ce1aa8f3dfb09a5d87f /fs/cachefiles/daemon.c | |
| parent | b817e22b2e91257ace32a6768c3c003faeaa1c5c (diff) | |
| download | linux-e73fa11a356ca0905c3cc648eaacc6f0f2d2c8b3.tar.xz | |
cachefiles: add restore command to recover inflight ondemand read requests
Previously, in ondemand read scenario, if the anonymous fd was closed by
user daemon, inflight and subsequent read requests would return EIO.
As long as the device connection is not released, user daemon can hold
and restore inflight requests by setting the request flag to
CACHEFILES_REQ_NEW.
Suggested-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Signed-off-by: Jia Zhu <zhujia.zj@bytedance.com>
Signed-off-by: Xin Yin <yinxin.x@bytedance.com>
Link: https://lore.kernel.org/r/20231120041422.75170-6-zhujia.zj@bytedance.com
Reviewed-by: Jingbo Xu <jefflexu@linux.alibaba.com>
Reviewed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/cachefiles/daemon.c')
| -rw-r--r-- | fs/cachefiles/daemon.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 70caa1946207..3f24905f4066 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -77,6 +77,7 @@ static const struct cachefiles_daemon_cmd cachefiles_daemon_cmds[] = { { "tag", cachefiles_daemon_tag }, #ifdef CONFIG_CACHEFILES_ONDEMAND { "copen", cachefiles_ondemand_copen }, + { "restore", cachefiles_ondemand_restore }, #endif { "", NULL } }; |