diff options
author | Yan, Zheng <zyan@redhat.com> | 2018-12-13 16:34:11 +0800 |
---|---|---|
committer | Ilya Dryomov <idryomov@gmail.com> | 2018-12-26 16:08:36 +0100 |
commit | 5ccedf1ccd710ba32f36986b49eeb764e53e7ef1 (patch) | |
tree | 3f37ffdcdcb936903c5bbb12e95f397b5d8f3cd7 /fs/ceph | |
parent | d2f8bb27c87945ab696bdaea25b0465dee94fb6d (diff) | |
download | linux-stable-5ccedf1ccd710ba32f36986b49eeb764e53e7ef1.tar.gz linux-stable-5ccedf1ccd710ba32f36986b49eeb764e53e7ef1.tar.bz2 linux-stable-5ccedf1ccd710ba32f36986b49eeb764e53e7ef1.zip |
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>
Diffstat (limited to 'fs/ceph')
-rw-r--r-- | fs/ceph/mds_client.c | 94 |
1 files changed, 49 insertions, 45 deletions
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index 977e38f58806..163fc74bf221 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -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) { + kfree(flocks); + goto out_err; + } - 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 (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; } |