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ceph: handle change_attr in cap messages

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Signed-off-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Jeff Layton
2019-06-06 08:06:40 -04:00
committed by Ilya Dryomov
parent a35ead314e
commit 176c77c9c9
3 changed files with 13 additions and 9 deletions
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19
fs/ceph/caps.c
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@@ -8,6 +8,7 @@
#include <linux/vmalloc.h>
#include <linux/wait.h>
#include <linux/writeback.h>
#include <linux/iversion.h>
#include "super.h"
#include "mds_client.h"
@@ -1138,6 +1139,7 @@ struct cap_msg_args {
u64 ino, cid, follows;
u64 flush_tid, oldest_flush_tid, size, max_size;
u64 xattr_version;
u64 change_attr;
struct ceph_buffer *xattr_buf;
struct timespec64 atime, mtime, ctime, btime;
int op, caps, wanted, dirty;
@@ -1244,15 +1246,10 @@ static int send_cap_msg(struct cap_msg_args *arg)
/* pool namespace (version 8) (mds always ignores this) */
ceph_encode_32(&p, 0);
/*
* btime and change_attr (version 9)
*
* We just zero these out for now, as the MDS ignores them unless
* the requisite feature flags are set (which we don't do yet).
*/
/* btime and change_attr (version 9) */
ceph_encode_timespec64(p, &arg->btime);
p += sizeof(struct ceph_timespec);
ceph_encode_64(&p, 0);
ceph_encode_64(&p, arg->change_attr);
/* Advisory flags (version 10) */
ceph_encode_32(&p, arg->flags);
@@ -1379,6 +1376,7 @@ static int __send_cap(struct ceph_mds_client *mdsc, struct ceph_cap *cap,
arg.atime = inode->i_atime;
arg.ctime = inode->i_ctime;
arg.btime = ci->i_btime;
arg.change_attr = inode_peek_iversion_raw(inode);
arg.op = op;
arg.caps = cap->implemented;
@@ -1439,6 +1437,7 @@ static inline int __send_flush_snap(struct inode *inode,
arg.mtime = capsnap->mtime;
arg.ctime = capsnap->ctime;
arg.btime = capsnap->btime;
arg.change_attr = capsnap->change_attr;
arg.op = CEPH_CAP_OP_FLUSHSNAP;
arg.caps = capsnap->issued;
@@ -3043,6 +3042,7 @@ struct cap_extra_info {
bool dirstat_valid;
u64 nfiles;
u64 nsubdirs;
u64 change_attr;
/* currently issued */
int issued;
struct timespec64 btime;
@@ -3127,6 +3127,8 @@ static void handle_cap_grant(struct inode *inode,
__check_cap_issue(ci, cap, newcaps);
inode_set_max_iversion_raw(inode, extra_info->change_attr);
if ((newcaps & CEPH_CAP_AUTH_SHARED) &&
(extra_info->issued & CEPH_CAP_AUTH_EXCL) == 0) {
inode->i_mode = le32_to_cpu(grant->mode);
@@ -3856,14 +3858,13 @@ void ceph_handle_caps(struct ceph_mds_session *session,
if (msg_version >= 9) {
struct ceph_timespec *btime;
u64 change_attr;
if (p + sizeof(*btime) > end)
goto bad;
btime = p;
ceph_decode_timespec64(&extra_info.btime, btime);
p += sizeof(*btime);
ceph_decode_64_safe(&p, end, change_attr, bad);
ceph_decode_64_safe(&p, end, extra_info.change_attr, bad);
}
if (msg_version >= 11) {