Xiubo Li bd04b9192e ceph: fail the open_by_handle_at() if the dentry is being unlinked ...

When unlinking a file the kclient will send a unlink request to MDS
by holding the dentry reference, and then the MDS will return 2 replies,
which are unsafe reply and a deferred safe reply.

After the unsafe reply received the kernel will return and succeed
the unlink request to user space apps.

Only when the safe reply received the dentry's reference will be
released. Or the dentry will only be unhashed from dcache. But when
the open_by_handle_at() begins to open the unlinked files it will
succeed.

The inode->i_count couldn't be used to check whether the inode is
opened or not.

Link: https://tracker.ceph.com/issues/56524
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Luís Henriques <lhenriques@suse.de>
Tested-by: Luís Henriques <lhenriques@suse.de>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

2022-10-04 19:18:08 +02:00

..

acl.c

vfs: add rcu argument to ->get_acl() callback

2021-08-18 22:08:24 +02:00

addr.c

We have a good pile of various fixes and cleanups from Xiubo, Jeff,

2022-08-11 12:41:07 -07:00

cache.c

netfs: Fix gcc-12 warning by embedding vfs inode in netfs_i_context

2022-06-09 13:55:00 -07:00

cache.h

netfs: Further cleanups after struct netfs_inode wrapper introduced

2022-06-10 20:55:21 +01:00

caps.c

ceph: Use kcalloc for allocating multiple elements

2022-10-04 19:18:08 +02:00

ceph_frag.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

debugfs.c

ceph: use tracked average r/w/m latencies to display metrics in debugfs

2022-03-21 13:35:16 +01:00

dir.c

ceph: wait for the first reply of inflight async unlink

2022-08-03 00:54:12 +02:00

export.c

ceph: fail the open_by_handle_at() if the dentry is being unlinked

2022-10-04 19:18:08 +02:00

file.c

We have a good pile of various fixes and cleanups from Xiubo, Jeff,

2022-08-11 12:41:07 -07:00

inode.c

ceph: increment i_version when doing a setattr with caps

2022-10-04 19:18:08 +02:00

io.c

ceph: fix kerneldoc copypasta over ceph_start_io_direct

2021-04-27 23:52:23 +02:00

io.h

ceph: add buffered/direct exclusionary locking for reads and writes

2019-09-16 12:06:25 +02:00

ioctl.c

ceph: consider inode's last read/write when calculating wanted caps

2020-03-30 12:42:42 +02:00

ioctl.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

Kconfig

ceph: conversion to new fscache API

2022-01-11 22:13:01 +00:00

locks.c

ceph: eliminate req->r_wait_for_completion from ceph_mds_request

2022-03-01 18:26:36 +01:00

Makefile

ceph: add dentry lease metric support

2020-06-01 13:22:51 +02:00

mds_client.c

ceph: fail the request if the peer MDS doesn't support getvxattr op

2022-10-04 19:18:08 +02:00

mds_client.h

ceph: fail the request if the peer MDS doesn't support getvxattr op

2022-10-04 19:18:08 +02:00

mdsmap.c

ceph: prevent a client from exceeding the MDS maximum xattr size

2022-08-03 00:54:12 +02:00

metric.c

ceph: include average/stdev r/w/m latency in mds metrics

2022-03-21 13:35:16 +01:00

metric.h

ceph: include average/stdev r/w/m latency in mds metrics

2022-03-21 13:35:16 +01:00

quota.c

ceph: fix statfs for subdir mounts

2022-05-25 20:45:14 +02:00

snap.c

netfs: Fix gcc-12 warning by embedding vfs inode in netfs_i_context

2022-06-09 13:55:00 -07:00

strings.c

ceph: add getvxattr op

2022-03-01 18:26:37 +01:00

super.c

ceph: make f_bsize always equal to f_frsize

2022-08-03 00:54:13 +02:00

super.h

ceph: don't get the inline data for new creating files

2022-08-03 00:54:12 +02:00

util.c

ceph: move net/ceph/ceph_fs.c to fs/ceph/util.c

2020-01-27 16:53:40 +01:00

xattr.c

ceph: prevent a client from exceeding the MDS maximum xattr size

2022-08-03 00:54:12 +02:00