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epoll: Call poll_notify before unlock mutex

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to avoid the race condition

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2022-11-11 14:53:38 +08:00 committed by Petro Karashchenko
parent 7e8e5c10d1
commit b72be1ddbf
1 changed files with 1 additions and 1 deletions
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2
fs/vfs/fs_epoll.c
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@ -366,8 +366,8 @@ int epoll_ctl(int epfd, int op, int fd, FAR struct epoll_event *ev)
goto err; goto err;
} }
nxmutex_unlock(&eph->lock);
poll_notify(&eph->poll, 1, POLLIN); poll_notify(&eph->poll, 1, POLLIN);
nxmutex_unlock(&eph->lock);
return OK; return OK;
err: err: