BMC/Intel-BMC/linux.git/fs/ceph/inode.c, branch dev-4.17

ceph: always update atime/mtime/ctime for new inode

2018-04-16T07:38:40+00:00

For new inode, atime/mtime/ctime are uninitialized. Don't compare against them. Cc: stable@kernel.org Signed-off-by: "Yan, Zheng" Reviewed-by: Ilya Dryomov Signed-off-by: Ilya Dryomov

ceph: quota: add counter for snaprealms with quota

2018-04-02T09:17:53+00:00

By keeping a counter with the number of snaprealms that have quota set allows to optimize the functions that need to walk throught the realms hierarchy looking for quotas. Thus, if this counter is zero it's safe to assume that there are no realms with quota. Signed-off-by: Luis Henriques Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: quota: cache inode pointer in ceph_snap_realm

2018-04-02T09:17:53+00:00

Keep a pointer to the inode in struct ceph_snap_realm. This allows to optimize functions that walk the realms hierarchy (e.g. in quotas). Signed-off-by: Luis Henriques Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: quota: support for ceph.quota.max_bytes

2018-04-02T09:17:52+00:00

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

ceph: quota: add initial infrastructure to support cephfs quotas

2018-04-02T09:17:51+00:00

This patch adds the infrastructure required to support cephfs quotas as it is currently implemented in the ceph fuse client. Cephfs quotas can be set on any directory, and can restrict the number of bytes or the number of files stored beneath that point in the directory hierarchy. Quotas are set using the extended attributes 'ceph.quota.max_files' and 'ceph.quota.max_bytes', and can be removed by setting these attributes to '0'. Link: http://tracker.ceph.com/issues/22372 Signed-off-by: Luis Henriques Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: invalidate pages that beyond EOF in ceph_writepages_start()

2018-04-02T08:12:47+00:00

Dirty pages can be associated with different capsnap. Different capsnap may have different EOF value. So invalidating dirty pages according to the largest EOF value is wrong. Dirty pages beyond EOF, but associated with other capsnap, do not get invalidated. Signed-off-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: avoid dereferencing invalid pointer during cached readdir

2018-01-29T17:36:07+00:00

Readdir cache keeps array of dentry pointers in page cache. If any dentry in readdir cache gets pruned, ceph_d_prune() disables readdir cache for later readdir syscall. The problem is that ceph_d_prune() ignores unhashed dentry. Ideally MDS should have already revoked CEPH_CAP_FILE_SHARED (which also disables readdir cache) when dentry gets unhashed. But if it is somehow MDS does not properly revoke CEPH_CAP_FILE_SHARED and the unhashed dentry gets pruned later, ceph_d_prune() will not disable readdir cache, later readdir may reference invalid dentry pointer. The fix is make ceph_d_prune() do extra check for unhashed dentry. Disable readdir cache if the unhashed dentry is still referenced by readdir cache. Another fix in this patch is handle d_splice_alias(). If a dentry gets spliced into new parent dentry, treat it as if it was pruned (call ceph_d_prune() for it). Signed-off-by: "Yan, Zheng" Acked-by: Jeff Layton Signed-off-by: Ilya Dryomov

ceph: use atomic_t for ceph_inode_info::i_shared_gen

2018-01-29T17:36:07+00:00

It allows accessing i_shared_gen without holding i_ceph_lock. It is preparation for later patch. Signed-off-by: "Yan, Zheng" Acked-by: Jeff Layton Signed-off-by: Ilya Dryomov

ceph: properly drop caps for setattr request

2018-01-29T17:36:05+00:00

For CEPH_SETATTR_ATIME, MDS needs to xlock filelock, Fsxrw caps are not allowed for xlocked filelock. For CEPH_SETATTR_SIZE request that truncates file to smaller size, MDS needs to xlock filelock, Fsxrw caps are not allowed for xlocked filelock. Signed-off-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov

ceph: remove the bump of i_version

2017-11-13T11:11:51+00:00

Eventually, we'll want to wire cephfs up to use the change attribute that the cluster tracks instead, but for now this is unneeded. Signed-off-by: Jeff Layton Reviewed-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov