kernel/fs/ceph/super.c, branch linux-5.1.y

ceph: flush dirty inodes before proceeding with remount

2019-05-25T16:16:36Z

commit 00abf69dd24f4444d185982379c5cc3bb7b6d1fc upstream. xfstest generic/452 was triggering a "Busy inodes after umount" warning. ceph was allowing the mount to go read-only without first flushing out dirty inodes in the cache. Ensure we sync out the filesystem before allowing a remount to proceed. Cc: stable@vger.kernel.org Link: http://tracker.ceph.com/issues/39571 Signed-off-by: Jeff Layton Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov Signed-off-by: Greg Kroah-Hartman

ceph: add mount option to limit caps count

2019-03-05T17:55:17Z

If number of caps exceed the limit, ceph_trim_dentires() also trim dentries with valid leases. Trimming dentry releases references to associated inode, which may evict inode and release caps. By default, there is no limit for caps count. Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

ceph: send cap releases more aggressively

2019-03-05T17:55:16Z

When pending cap releases fill up one message, start a work to send cap release message. (old way is sending cap releases every 5 seconds) Signed-off-by: "Yan, Zheng" Reviewed-by: Jeff Layton Signed-off-by: Ilya Dryomov

libceph: allow setting abort_on_full for rbd

2019-01-07T21:47:48Z

Introduce a new option abort_on_full, default to false. Then we can get -ENOSPC when the pool is full, or reaches quota. [ Don't show abort_on_full in /proc/mounts. ] Signed-off-by: Dongsheng Yang Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph: make 'nocopyfrom' a default mount option

2018-12-11T17:22:17Z

Since we found a problem with the 'copy-from' operation after objects have been truncated, offloading object copies to OSDs should be discouraged until the issue is fixed. Thus, this patch adds the 'nocopyfrom' mount option to the default mount options which effectily means that remote copies won't be done in copy_file_range unless they are explicitly enabled at mount time. [ Adjust ceph_show_options() accordingly. ] Link: https://tracker.ceph.com/issues/37378 Signed-off-by: Luis Henriques Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph: new mount option to disable usage of copy-from op

2018-10-22T08:28:24Z

Add a new mount option 'nocopyfrom' that will prevent the usage of the RADOS 'copy-from' operation in cephfs. This could be useful, for example, for an administrator to temporarily mitigate any possible bugs in the 'copy-from' implementation. Currently, only copy_file_range uses this RADOS operation. Setting this mount option will result in this syscall reverting to the default VFS implementation, i.e. to perform the copies locally instead of doing remote object copies. Signed-off-by: Luis Henriques Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: avoid a use-after-free in ceph_destroy_options()

2018-09-06T14:18:04Z

syzbot reported a use-after-free in ceph_destroy_options(), called from ceph_mount(). The problem was that create_fs_client() consumed the opt pointer on some errors, but not on all of them. Make sure it always consumes both libceph and ceph options. Reported-by: syzbot+8ab6f1042021b4eed062@syzkaller.appspotmail.com Signed-off-by: Ilya Dryomov Reviewed-by: "Yan, Zheng"

ceph: add new field max_file_size in ceph_fs_client

2018-08-02T19:33:27Z

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 Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

libceph: amend "bad option arg" error message

2018-08-02T19:26:11Z

Don't mention "mount" -- in the rbd case it is "mapping". Signed-off-by: Ilya Dryomov

ceph: show ino32 if the value is different with default

2018-06-04T18:46:02Z

In current ceph_show_options(), there is no item for showing 'ino32', so add showing mount option 'ino32' if the value is different with default. Signed-off-by: Chengguang Xu Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov