ceph: don't encode inode pathes into reconnect message

mds hasn't used inode pathes since introducing inode backtrace.

Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
This commit is contained in:
Yan, Zheng 2018-12-13 16:34:11 +08:00 committed by Ilya Dryomov
parent d2f8bb27c8
commit 5ccedf1ccd
1 changed files with 50 additions and 46 deletions

View File

@ -2960,11 +2960,8 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
struct ceph_inode_info *ci = cap->ci;
struct ceph_reconnect_state *recon_state = arg;
struct ceph_pagelist *pagelist = recon_state->pagelist;
char *path;
int pathlen, err;
u64 pathbase;
int err;
u64 snap_follows;
struct dentry *dentry;
dout(" adding %p ino %llx.%llx cap %p %lld %s\n",
inode, ceph_vinop(inode), cap, cap->cap_id,
@ -2973,19 +2970,6 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
if (err)
return err;
dentry = d_find_alias(inode);
if (dentry) {
path = ceph_mdsc_build_path(dentry, &pathlen, &pathbase, 0);
if (IS_ERR(path)) {
err = PTR_ERR(path);
goto out_dput;
}
} else {
path = NULL;
pathlen = 0;
pathbase = 0;
}
spin_lock(&ci->i_ceph_lock);
cap->seq = 0; /* reset cap seq */
cap->issue_seq = 0; /* and issue_seq */
@ -2997,7 +2981,7 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
rec.v2.wanted = cpu_to_le32(__ceph_caps_wanted(ci));
rec.v2.issued = cpu_to_le32(cap->issued);
rec.v2.snaprealm = cpu_to_le64(ci->i_snap_realm->ino);
rec.v2.pathbase = cpu_to_le64(pathbase);
rec.v2.pathbase = 0;
rec.v2.flock_len = (__force __le32)
((ci->i_ceph_flags & CEPH_I_ERROR_FILELOCK) ? 0 : 1);
} else {
@ -3008,7 +2992,7 @@ static int encode_caps_cb(struct inode *inode, struct ceph_cap *cap,
ceph_encode_timespec64(&rec.v1.mtime, &inode->i_mtime);
ceph_encode_timespec64(&rec.v1.atime, &inode->i_atime);
rec.v1.snaprealm = cpu_to_le64(ci->i_snap_realm->ino);
rec.v1.pathbase = cpu_to_le64(pathbase);
rec.v1.pathbase = 0;
}
if (list_empty(&ci->i_cap_snaps)) {
@ -3040,7 +3024,7 @@ encode_again:
GFP_NOFS);
if (!flocks) {
err = -ENOMEM;
goto out_free;
goto out_err;
}
err = ceph_encode_locks_to_buffer(inode, flocks,
num_fcntl_locks,
@ -3050,7 +3034,7 @@ encode_again:
flocks = NULL;
if (err == -ENOSPC)
goto encode_again;
goto out_free;
goto out_err;
}
} else {
kfree(flocks);
@ -3070,44 +3054,64 @@ encode_again:
sizeof(struct ceph_filelock);
rec.v2.flock_len = cpu_to_le32(struct_len);
struct_len += sizeof(rec.v2);
struct_len += sizeof(u32) + pathlen;
struct_len += sizeof(u32) + sizeof(rec.v2);
if (struct_v >= 2)
struct_len += sizeof(u64); /* snap_follows */
total_len += struct_len;
err = ceph_pagelist_reserve(pagelist, total_len);
if (!err) {
if (recon_state->msg_version >= 3) {
ceph_pagelist_encode_8(pagelist, struct_v);
ceph_pagelist_encode_8(pagelist, 1);
ceph_pagelist_encode_32(pagelist, struct_len);
}
ceph_pagelist_encode_string(pagelist, path, pathlen);
ceph_pagelist_append(pagelist, &rec, sizeof(rec.v2));
ceph_locks_to_pagelist(flocks, pagelist,
num_fcntl_locks,
num_flock_locks);
if (struct_v >= 2)
ceph_pagelist_encode_64(pagelist, snap_follows);
if (err) {
kfree(flocks);
goto out_err;
}
if (recon_state->msg_version >= 3) {
ceph_pagelist_encode_8(pagelist, struct_v);
ceph_pagelist_encode_8(pagelist, 1);
ceph_pagelist_encode_32(pagelist, struct_len);
}
ceph_pagelist_encode_string(pagelist, NULL, 0);
ceph_pagelist_append(pagelist, &rec, sizeof(rec.v2));
ceph_locks_to_pagelist(flocks, pagelist,
num_fcntl_locks, num_flock_locks);
if (struct_v >= 2)
ceph_pagelist_encode_64(pagelist, snap_follows);
kfree(flocks);
} else {
size_t size = sizeof(u32) + pathlen + sizeof(rec.v1);
err = ceph_pagelist_reserve(pagelist, size);
if (!err) {
ceph_pagelist_encode_string(pagelist, path, pathlen);
ceph_pagelist_append(pagelist, &rec, sizeof(rec.v1));
u64 pathbase = 0;
int pathlen = 0;
char *path = NULL;
struct dentry *dentry;
dentry = d_find_alias(inode);
if (dentry) {
path = ceph_mdsc_build_path(dentry,
&pathlen, &pathbase, 0);
dput(dentry);
if (IS_ERR(path)) {
err = PTR_ERR(path);
goto out_err;
}
rec.v1.pathbase = cpu_to_le64(pathbase);
}
err = ceph_pagelist_reserve(pagelist,
pathlen + sizeof(u32) + sizeof(rec.v1));
if (err) {
kfree(path);
goto out_err;
}
ceph_pagelist_encode_string(pagelist, path, pathlen);
ceph_pagelist_append(pagelist, &rec, sizeof(rec.v1));
kfree(path);
}
recon_state->nr_caps++;
out_free:
kfree(path);
out_dput:
dput(dentry);
out_err:
return err;
}