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| author | Chengguang Xu <cgxu519@gmx.com> | 2018-07-19 22:15:24 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2018-08-02 21:33:27 +0200 |
| commit | 719784ba706cdbb47ef87483950f0a4594d36e87 (patch) | |
| tree | 98ebbab08cb3fda315435011ad517effcc08956e | |
| parent | f1d10e04637924f2b00a0fecdd2ca4565f5cfc3f (diff) | |
| download | linux-719784ba706cdbb47ef87483950f0a4594d36e87.tar.gz linux-719784ba706cdbb47ef87483950f0a4594d36e87.tar.bz2 linux-719784ba706cdbb47ef87483950f0a4594d36e87.zip | |
ceph: add new field max_file_size in ceph_fs_client
In order to not bother to VFS and other specific filesystems,
we decided to do offset validation inside ceph kernel client,
so just simply set sb->s_maxbytes to MAX_LFS_FILESIZE so that
it can successfully pass VFS check. We add new field max_file_size
in ceph_fs_client to store real file size limit and doing proper
check based on it.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
| -rw-r--r-- | fs/ceph/mds_client.c | 3 | ||||
| -rw-r--r-- | fs/ceph/super.c | 3 | ||||
| -rw-r--r-- | fs/ceph/super.h | 1 |
3 files changed, 5 insertions, 2 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 4fc7582233db..dfbe138472e6 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -4018,7 +4018,8 @@ void ceph_mdsc_handle_mdsmap(struct ceph_mds_client *mdsc, struct ceph_msg *msg) } else { mdsc->mdsmap = newmap; /* first mds map */ } - mdsc->fsc->sb->s_maxbytes = mdsc->mdsmap->m_max_file_size; + mdsc->fsc->max_file_size = min((loff_t)mdsc->mdsmap->m_max_file_size, + MAX_LFS_FILESIZE); __wake_requests(mdsc, &mdsc->waiting_for_map); ceph_monc_got_map(&mdsc->fsc->client->monc, CEPH_SUB_MDSMAP, diff --git a/fs/ceph/super.c b/fs/ceph/super.c index 3d8a26b2944f..43ca3b763875 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -940,11 +940,12 @@ static int ceph_set_super(struct super_block *s, void *data) dout("set_super %p data %p\n", s, data); s->s_flags = fsc->mount_options->sb_flags; - s->s_maxbytes = 1ULL << 40; /* temp value until we get mdsmap */ + s->s_maxbytes = MAX_LFS_FILESIZE; s->s_xattr = ceph_xattr_handlers; s->s_fs_info = fsc; fsc->sb = s; + fsc->max_file_size = 1ULL << 40; /* temp value until we get mdsmap */ s->s_op = &ceph_super_ops; s->s_d_op = &ceph_dentry_ops; diff --git a/fs/ceph/super.h b/fs/ceph/super.h index d3eb70e2b527..f09dbf2a2e26 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -98,6 +98,7 @@ struct ceph_fs_client { unsigned long mount_state; int min_caps; /* min caps i added */ + loff_t max_file_size; struct ceph_mds_client *mdsc; |