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authorDavid Disseldorp <ddiss@suse.de>2019-04-18 14:15:46 +0200
committerIlya Dryomov <idryomov@gmail.com>2019-07-08 14:01:40 +0200
commit193e7b37628e97c6e66ec26a2c062dace68b4acd (patch)
tree24bcc4b4dc2d768479ab76a1e7e1609c6319059b /fs/ceph
parente1b814391440b65df0836cef8c7b641fb83f4bf6 (diff)
downloadlinux-193e7b37628e97c6e66ec26a2c062dace68b4acd.tar.bz2
ceph: carry snapshot creation time with inodes
MDS InodeStat v3 wire structures include a trailing snapshot creation time member. Unmarshall this and retain it for a future vxattr. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: "Yan, Zheng" <zyan@redhat.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/inode.c1
-rw-r--r--fs/ceph/mds_client.c10
-rw-r--r--fs/ceph/mds_client.h1
-rw-r--r--fs/ceph/super.h1
4 files changed, 13 insertions, 0 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 761451f36e2d..eb35d47d4e2e 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -813,6 +813,7 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
dout("%p mode 0%o uid.gid %d.%d\n", inode, inode->i_mode,
from_kuid(&init_user_ns, inode->i_uid),
from_kgid(&init_user_ns, inode->i_gid));
+ ceph_decode_timespec64(&ci->i_snap_btime, &iinfo->snap_btime);
}
if ((new_version || (new_issued & CEPH_CAP_LINK_SHARED)) &&
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index c8a9b89b922d..0b78507eccb0 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -166,6 +166,15 @@ static int parse_reply_info_in(void **p, void *end,
info->dir_pin = -ENODATA;
}
+ /* snapshot birth time, remains zero for v<=2 */
+ if (struct_v >= 3) {
+ ceph_decode_need(p, end, sizeof(info->snap_btime), bad);
+ ceph_decode_copy(p, &info->snap_btime,
+ sizeof(info->snap_btime));
+ } else {
+ memset(&info->snap_btime, 0, sizeof(info->snap_btime));
+ }
+
*p = end;
} else {
if (features & CEPH_FEATURE_MDS_INLINE_DATA) {
@@ -198,6 +207,7 @@ static int parse_reply_info_in(void **p, void *end,
}
info->dir_pin = -ENODATA;
+ /* info->snap_btime remains zero */
}
return 0;
bad:
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index a83f28bc2387..9c28b86abcf4 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -69,6 +69,7 @@ struct ceph_mds_reply_info_in {
u64 max_bytes;
u64 max_files;
s32 dir_pin;
+ struct ceph_timespec snap_btime;
};
struct ceph_mds_reply_dir_entry {
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 5f27e1f7f2d6..1de6b1f4f094 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -384,6 +384,7 @@ struct ceph_inode_info {
int i_snap_realm_counter; /* snap realm (if caps) */
struct list_head i_snap_realm_item;
struct list_head i_snap_flush_item;
+ struct timespec64 i_snap_btime;
struct work_struct i_work;
unsigned long i_work_mask;