From a1c6b8358171c16db0f858a7fbb28aa574b07c09 Mon Sep 17 00:00:00 2001 From: "Yan, Zheng" Date: Fri, 27 Apr 2018 10:29:44 +0800 Subject: [PATCH] ceph: define argument structure for handle_cap_grant The data structure includes the versioned feilds of cap message. Signed-off-by: "Yan, Zheng" Signed-off-by: Ilya Dryomov --- fs/ceph/caps.c | 115 ++++++++++++++++++++++++++----------------------- 1 file changed, 61 insertions(+), 54 deletions(-) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index 1b9f611c9dfe..de7b7a34195e 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -3024,24 +3024,32 @@ static void invalidate_aliases(struct inode *inode) dput(prev); } +struct cap_extra_info { + struct ceph_string *pool_ns; + /* inline data */ + u64 inline_version; + void *inline_data; + u32 inline_len; + /* currently issued */ + int issued; +}; + /* * Handle a cap GRANT message from the MDS. (Note that a GRANT may * actually be a revocation if it specifies a smaller cap set.) * * caller holds s_mutex and i_ceph_lock, we drop both. */ -static void handle_cap_grant(struct ceph_mds_client *mdsc, - struct inode *inode, struct ceph_mds_caps *grant, - struct ceph_string **pns, u64 inline_version, - void *inline_data, u32 inline_len, - struct ceph_buffer *xattr_buf, +static void handle_cap_grant(struct inode *inode, struct ceph_mds_session *session, - struct ceph_cap *cap, int issued) + struct ceph_cap *cap, + struct ceph_mds_caps *grant, + struct ceph_buffer *xattr_buf, + struct cap_extra_info *extra_info) __releases(ci->i_ceph_lock) - __releases(mdsc->snap_rwsem) + __releases(session->s_mdsc->snap_rwsem) { struct ceph_inode_info *ci = ceph_inode(inode); - int mds = session->s_mds; int seq = le32_to_cpu(grant->seq); int newcaps = le32_to_cpu(grant->caps); int used, wanted, dirty; @@ -3057,7 +3065,7 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc, bool fill_inline = false; dout("handle_cap_grant inode %p cap %p mds%d seq %d %s\n", - inode, cap, mds, seq, ceph_cap_string(newcaps)); + inode, cap, session->s_mds, seq, ceph_cap_string(newcaps)); dout(" size %llu max_size %llu, i_size %llu\n", size, max_size, inode->i_size); @@ -3103,7 +3111,7 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc, __check_cap_issue(ci, cap, newcaps); if ((newcaps & CEPH_CAP_AUTH_SHARED) && - (issued & CEPH_CAP_AUTH_EXCL) == 0) { + (extra_info->issued & CEPH_CAP_AUTH_EXCL) == 0) { inode->i_mode = le32_to_cpu(grant->mode); inode->i_uid = make_kuid(&init_user_ns, le32_to_cpu(grant->uid)); inode->i_gid = make_kgid(&init_user_ns, le32_to_cpu(grant->gid)); @@ -3113,14 +3121,15 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc, } if ((newcaps & CEPH_CAP_AUTH_SHARED) && - (issued & CEPH_CAP_LINK_EXCL) == 0) { + (extra_info->issued & CEPH_CAP_LINK_EXCL) == 0) { set_nlink(inode, le32_to_cpu(grant->nlink)); if (inode->i_nlink == 0 && (newcaps & (CEPH_CAP_LINK_SHARED | CEPH_CAP_LINK_EXCL))) deleted_inode = true; } - if ((issued & CEPH_CAP_XATTR_EXCL) == 0 && grant->xattr_len) { + if ((extra_info->issued & CEPH_CAP_XATTR_EXCL) == 0 && + grant->xattr_len) { int len = le32_to_cpu(grant->xattr_len); u64 version = le64_to_cpu(grant->xattr_version); @@ -3140,7 +3149,7 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc, ceph_decode_timespec(&mtime, &grant->mtime); ceph_decode_timespec(&atime, &grant->atime); ceph_decode_timespec(&ctime, &grant->ctime); - ceph_fill_file_time(inode, issued, + ceph_fill_file_time(inode, extra_info->issued, le32_to_cpu(grant->time_warp_seq), &ctime, &mtime, &atime); } @@ -3153,15 +3162,16 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc, ceph_file_layout_from_legacy(&ci->i_layout, &grant->layout); old_ns = rcu_dereference_protected(ci->i_layout.pool_ns, lockdep_is_held(&ci->i_ceph_lock)); - rcu_assign_pointer(ci->i_layout.pool_ns, *pns); + rcu_assign_pointer(ci->i_layout.pool_ns, extra_info->pool_ns); - if (ci->i_layout.pool_id != old_pool || *pns != old_ns) + if (ci->i_layout.pool_id != old_pool || + extra_info->pool_ns != old_ns) ci->i_ceph_flags &= ~CEPH_I_POOL_PERM; - *pns = old_ns; + extra_info->pool_ns = old_ns; /* size/truncate_seq? */ - queue_trunc = ceph_fill_file_size(inode, issued, + queue_trunc = ceph_fill_file_size(inode, extra_info->issued, le32_to_cpu(grant->truncate_seq), le64_to_cpu(grant->truncate_size), size); @@ -3240,24 +3250,26 @@ static void handle_cap_grant(struct ceph_mds_client *mdsc, } BUG_ON(cap->issued & ~cap->implemented); - if (inline_version > 0 && inline_version >= ci->i_inline_version) { - ci->i_inline_version = inline_version; + if (extra_info->inline_version > 0 && + extra_info->inline_version >= ci->i_inline_version) { + ci->i_inline_version = extra_info->inline_version; if (ci->i_inline_version != CEPH_INLINE_NONE && (newcaps & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO))) fill_inline = true; } if (le32_to_cpu(grant->op) == CEPH_CAP_OP_IMPORT) { - if (newcaps & ~issued) + if (newcaps & ~extra_info->issued) wake = true; - kick_flushing_inode_caps(mdsc, session, inode); - up_read(&mdsc->snap_rwsem); + kick_flushing_inode_caps(session->s_mdsc, session, inode); + up_read(&session->s_mdsc->snap_rwsem); } else { spin_unlock(&ci->i_ceph_lock); } if (fill_inline) - ceph_fill_inline_data(inode, NULL, inline_data, inline_len); + ceph_fill_inline_data(inode, NULL, extra_info->inline_data, + extra_info->inline_len); if (queue_trunc) ceph_queue_vmtruncate(inode); @@ -3722,31 +3734,24 @@ void ceph_handle_caps(struct ceph_mds_session *session, struct ceph_msg *msg) { struct ceph_mds_client *mdsc = session->s_mdsc; - struct super_block *sb = mdsc->fsc->sb; struct inode *inode; struct ceph_inode_info *ci; struct ceph_cap *cap; struct ceph_mds_caps *h; struct ceph_mds_cap_peer *peer = NULL; struct ceph_snap_realm *realm = NULL; - struct ceph_string *pool_ns = NULL; - int mds = session->s_mds; - int op, issued; + int op; u32 seq, mseq; struct ceph_vino vino; - u64 tid; - u64 inline_version = 0; - void *inline_data = NULL; - u32 inline_len = 0; void *snaptrace; size_t snaptrace_len; void *p, *end; + struct cap_extra_info extra_info = {}; - dout("handle_caps from mds%d\n", mds); + dout("handle_caps from mds%d\n", session->s_mds); /* decode */ end = msg->front.iov_base + msg->front.iov_len; - tid = le64_to_cpu(msg->hdr.tid); if (msg->front.iov_len < sizeof(*h)) goto bad; h = msg->front.iov_base; @@ -3781,12 +3786,12 @@ void ceph_handle_caps(struct ceph_mds_session *session, } if (le16_to_cpu(msg->hdr.version) >= 4) { - ceph_decode_64_safe(&p, end, inline_version, bad); - ceph_decode_32_safe(&p, end, inline_len, bad); - if (p + inline_len > end) + ceph_decode_64_safe(&p, end, extra_info.inline_version, bad); + ceph_decode_32_safe(&p, end, extra_info.inline_len, bad); + if (p + extra_info.inline_len > end) goto bad; - inline_data = p; - p += inline_len; + extra_info.inline_data = p; + p += extra_info.inline_len; } if (le16_to_cpu(msg->hdr.version) >= 5) { @@ -3811,13 +3816,14 @@ void ceph_handle_caps(struct ceph_mds_session *session, ceph_decode_32_safe(&p, end, pool_ns_len, bad); if (pool_ns_len > 0) { ceph_decode_need(&p, end, pool_ns_len, bad); - pool_ns = ceph_find_or_create_string(p, pool_ns_len); + extra_info.pool_ns = + ceph_find_or_create_string(p, pool_ns_len); p += pool_ns_len; } } /* lookup ino */ - inode = ceph_find_inode(sb, vino); + inode = ceph_find_inode(mdsc->fsc->sb, vino); ci = ceph_inode(inode); dout(" op %s ino %llx.%llx inode %p\n", ceph_cap_op_name(op), vino.ino, vino.snap, inode); @@ -3850,7 +3856,8 @@ void ceph_handle_caps(struct ceph_mds_session *session, /* these will work even if we don't have a cap yet */ switch (op) { case CEPH_CAP_OP_FLUSHSNAP_ACK: - handle_cap_flushsnap_ack(inode, tid, h, session); + handle_cap_flushsnap_ack(inode, le64_to_cpu(msg->hdr.tid), + h, session); goto done; case CEPH_CAP_OP_EXPORT: @@ -3869,10 +3876,9 @@ void ceph_handle_caps(struct ceph_mds_session *session, down_read(&mdsc->snap_rwsem); } handle_cap_import(mdsc, inode, h, peer, session, - &cap, &issued); - handle_cap_grant(mdsc, inode, h, &pool_ns, - inline_version, inline_data, inline_len, - msg->middle, session, cap, issued); + &cap, &extra_info.issued); + handle_cap_grant(inode, session, cap, + h, msg->middle, &extra_info); if (realm) ceph_put_snap_realm(mdsc, realm); goto done_unlocked; @@ -3880,10 +3886,11 @@ void ceph_handle_caps(struct ceph_mds_session *session, /* the rest require a cap */ spin_lock(&ci->i_ceph_lock); - cap = __get_cap_for_mds(ceph_inode(inode), mds); + cap = __get_cap_for_mds(ceph_inode(inode), session->s_mds); if (!cap) { dout(" no cap on %p ino %llx.%llx from mds%d\n", - inode, ceph_ino(inode), ceph_snap(inode), mds); + inode, ceph_ino(inode), ceph_snap(inode), + session->s_mds); spin_unlock(&ci->i_ceph_lock); goto flush_cap_releases; } @@ -3892,15 +3899,15 @@ void ceph_handle_caps(struct ceph_mds_session *session, switch (op) { case CEPH_CAP_OP_REVOKE: case CEPH_CAP_OP_GRANT: - __ceph_caps_issued(ci, &issued); - issued |= __ceph_caps_dirty(ci); - handle_cap_grant(mdsc, inode, h, &pool_ns, - inline_version, inline_data, inline_len, - msg->middle, session, cap, issued); + __ceph_caps_issued(ci, &extra_info.issued); + extra_info.issued |= __ceph_caps_dirty(ci); + handle_cap_grant(inode, session, cap, + h, msg->middle, &extra_info); goto done_unlocked; case CEPH_CAP_OP_FLUSH_ACK: - handle_cap_flush_ack(inode, tid, h, session, cap); + handle_cap_flush_ack(inode, le64_to_cpu(msg->hdr.tid), + h, session, cap); break; case CEPH_CAP_OP_TRUNC: @@ -3927,7 +3934,7 @@ void ceph_handle_caps(struct ceph_mds_session *session, mutex_unlock(&session->s_mutex); done_unlocked: iput(inode); - ceph_put_string(pool_ns); + ceph_put_string(extra_info.pool_ns); return; bad: -- GitLab