From: "Darrick J. Wong" <djwong@kernel.org>
To: Catherine Hoang <catherine.hoang@oracle.com>
Cc: linux-xfs@vger.kernel.org
Subject: Re: [PATCH v3] xfs: add LARP state transition diagram
Date: Wed, 5 Oct 2022 17:14:40 -0700 [thread overview]
Message-ID: <Yz4d8NC53oVfPhGP@magnolia> (raw)
In-Reply-To: <20221005233801.1731-1-catherine.hoang@oracle.com>
On Wed, Oct 05, 2022 at 04:38:01PM -0700, Catherine Hoang wrote:
> From: Dave Chinner <dchinner@redhat.com>
>
> Add a state transition diagram documenting each logged attribute state
> and their transition conditions. The diagram can be built from the
> included text source file with PlantUML.
>
> [cathhoan: add descriptions, links to docs, and diagram image]
>
> Signed-off-by: Dave Chinner <dchinner@redhat.com>
> Signed-off-by: Catherine Hoang <catherine.hoang@oracle.com>
> Reviewed-by: Allison Henderson <allison.henderson@oracle.com>
> ---
> Documentation/filesystems/xfs-larp-state.pu | 103 ++++++++
> Documentation/filesystems/xfs-larp-state.svg | 253 +++++++++++++++++++
How did you get it to pretty-print the svg?
This looks great! I think the next step is to link this into the
rest of the documentation, but that's a separate patch.
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
--D
> 2 files changed, 356 insertions(+)
> create mode 100644 Documentation/filesystems/xfs-larp-state.pu
> create mode 100644 Documentation/filesystems/xfs-larp-state.svg
>
> diff --git a/Documentation/filesystems/xfs-larp-state.pu b/Documentation/filesystems/xfs-larp-state.pu
> new file mode 100644
> index 000000000000..7a54773665a6
> --- /dev/null
> +++ b/Documentation/filesystems/xfs-larp-state.pu
> @@ -0,0 +1,103 @@
> +/'
> +PlantUML documentation:
> +Getting started - https://plantuml.com/starting
> +State diagram - https://plantuml.com/state-diagram
> +'/
> +
> +@startuml
> +
> +state REMOTE_ADD {
> + XFS_DAS_..._SET_RMT : find space for remote blocks
> + XFS_DAS_..._ALLOC_RMT : allocate blocks and set remote value
> +
> + XFS_DAS_..._SET_RMT --> XFS_DAS_..._ALLOC_RMT
> +}
> +
> +state ADD {
> + XFS_DAS_SF_ADD : add attr to shortform fork
> + XFS_DAS_LEAF_ADD : add attr to inode in leaf form
> + XFS_DAS_NODE_ADD : add attr to node format attribute tree
> +
> + state add_entry <<entryPoint>>
> + state add_form <<choice>>
> + add_entry --> add_form
> + add_form --> XFS_DAS_SF_ADD : short form
> + add_form --> XFS_DAS_LEAF_ADD : leaf form
> + add_form --> XFS_DAS_NODE_ADD : node form
> +
> + XFS_DAS_SF_ADD --> XFS_DAS_LEAF_ADD : Full or too large
> + XFS_DAS_LEAF_ADD --> XFS_DAS_NODE_ADD : full or too large
> +
> + XFS_DAS_LEAF_ADD --> XFS_DAS_..._SET_RMT : remote xattr
> + XFS_DAS_NODE_ADD --> XFS_DAS_..._SET_RMT : remote xattr
> +}
> +
> +state REMOVE {
> + XFS_DAS_SF_REMOVE : remove attr from shortform fork
> + XFS_DAS_LEAF_REMOVE : remove attr from an inode in leaf form
> + XFS_DAS_NODE_REMOVE : setup for removal
> + XFS_DAS_NODE_REMOVE : (attr exists and blocks are valid)
> +
> + state remove_entry <<entryPoint>>
> + state remove_form <<choice>>
> + remove_entry --> remove_form
> + remove_form --> XFS_DAS_SF_REMOVE : short form
> + remove_form --> XFS_DAS_LEAF_REMOVE : leaf form
> + remove_form --> XFS_DAS_NODE_REMOVE : node form
> +}
> +
> +state REPLACE {
> + state replace_choice <<choice>>
> + replace_choice --> add_entry : larp disable
> + replace_choice --> remove_entry : larp enabled
> +}
> +
> +
> +state OLD_REPLACE {
> + XFS_DAS_..._REPLACE : atomic INCOMPLETE flag flip
> + XFS_DAS_..._REMOVE_OLD : restore original xattr state for remove
> + XFS_DAS_..._REMOVE_OLD : invalidate old xattr
> +
> + XFS_DAS_..._REPLACE --> XFS_DAS_..._REMOVE_OLD
> +}
> +
> +state REMOVE_XATTR {
> + XFS_DAS_..._REMOVE_RMT : remove remote attribute blocks
> + XFS_DAS_..._REMOVE_ATTR : remove attribute name from leaf/node block
> +
> + state remove_xattr_choice <<choice>>
> + remove_xattr_choice --> XFS_DAS_..._REMOVE_RMT : Remote xattr
> + remove_xattr_choice --> XFS_DAS_..._REMOVE_ATTR : Local xattr
> +
> + XFS_DAS_..._REMOVE_RMT --> XFS_DAS_..._REMOVE_ATTR
> +}
> +
> +state XFS_DAS_DONE {
> +}
> +
> +state add_done <<choice>>
> +add_done -down-> XFS_DAS_DONE : Operation Complete
> +add_done -up-> XFS_DAS_..._REPLACE : LARP disabled REPLACE
> +XFS_DAS_SF_ADD -down-> add_done : Success
> +XFS_DAS_LEAF_ADD -down-> add_done : Success
> +XFS_DAS_NODE_ADD -down-> add_done : Success
> +XFS_DAS_..._ALLOC_RMT -down-> add_done : Success
> +
> +state remove_done <<choice>>
> +remove_done -down-> XFS_DAS_DONE : Operation Complete
> +remove_done -up-> add_entry : LARP enabled REPLACE
> +XFS_DAS_SF_REMOVE -down-> remove_done : Success
> +XFS_DAS_LEAF_REMOVE -down-> remove_done : Success
> +XFS_DAS_NODE_REMOVE -down-> remove_done : Success
> +XFS_DAS_..._REMOVE_ATTR -down-> remove_done : Success
> +
> +XFS_DAS_..._REMOVE_OLD --> remove_xattr_choice
> +XFS_DAS_NODE_REMOVE --> remove_xattr_choice
> +
> +state set_choice <<choice>>
> +[*] --> set_choice
> +set_choice --> add_entry : add new
> +set_choice --> remove_entry : remove existing
> +set_choice --> replace_choice : replace existing
> +XFS_DAS_DONE --> [*]
> +@enduml
> diff --git a/Documentation/filesystems/xfs-larp-state.svg b/Documentation/filesystems/xfs-larp-state.svg
> new file mode 100644
> index 000000000000..860fe2b59093
> --- /dev/null
> +++ b/Documentation/filesystems/xfs-larp-state.svg
> @@ -0,0 +1,253 @@
> +<?xml version="1.0" encoding="UTF-8" standalone="no"?>
> +<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" contentScriptType="application/ecmascript" contentStyleType="text/css" height="1462px" preserveAspectRatio="none" style="width:1857px;height:1462px" version="1.1" viewBox="0 0 1857 1462" width="1857px" zoomAndPan="magnify">
> + <defs>
> + <filter height="300%" id="fc2ynpqha1fpc" width="300%" x="-1" y="-1">
> + <feGaussianBlur result="blurOut" stdDeviation="2.0"/>
> + <feColorMatrix in="blurOut" result="blurOut2" type="matrix" values="0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .4 0"/>
> + <feOffset dx="4.0" dy="4.0" in="blurOut2" result="blurOut3"/>
> + <feBlend in="SourceGraphic" in2="blurOut3" mode="normal"/>
> + </filter>
> + </defs>
> + <g>
> + <!--cluster REMOTE_ADD-->
> + <rect fill="#FEFECE" filter="url(#fc2ynpqha1fpc)" height="230" rx="12.5" ry="12.5" style="stroke:#A80036;stroke-width:1.5" width="284" x="188" y="926"/>
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> + <line style="stroke:#A80036;stroke-width:1.5" x1="188" x2="472" y1="952.2969" y2="952.2969"/>
> + <text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="98" x="281" y="942.9951">REMOTE_ADD</text>
> + <!--cluster ADD-->
> + <rect fill="#FEFECE" filter="url(#fc2ynpqha1fpc)" height="559" rx="12.5" ry="12.5" style="stroke:#A80036;stroke-width:1.5" width="384" x="43" y="320"/>
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> + <text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="31" x="219.5" y="337.9951">ADD</text>
> + <!--cluster REMOVE-->
> + <rect fill="#FEFECE" filter="url(#fc2ynpqha1fpc)" height="295" rx="12.5" ry="12.5" style="stroke:#A80036;stroke-width:1.5" width="804" x="1041" y="320"/>
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> + <!--cluster REPLACE-->
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> + <line style="stroke:#A80036;stroke-width:1.5" x1="683" x2="762" y1="202.2969" y2="202.2969"/>
> + <text fill="#000000" font-family="sans-serif" font-size="14" lengthAdjust="spacingAndGlyphs" textLength="63" x="691" y="192.9951">REPLACE</text>
> + <!--cluster OLD_REPLACE-->
> + <rect fill="#FEFECE" filter="url(#fc2ynpqha1fpc)" height="242" rx="12.5" ry="12.5" style="stroke:#A80036;stroke-width:1.5" width="290" x="739" y="373"/>
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> + <path d="M715.46,106.53 C675.48,134.25 464.17,280.75 417.94,312.8 " fill="none" id="set_choice-add_entry" style="stroke:#A80036;stroke-width:1.0"/>
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> + <text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="53" x="627" y="227.5669">add new</text>
> + <!--link set_choice to remove_entry-->
> + <path d="M730.92,104.39 C750.14,109.72 796.57,123.68 832,143 C926.76,194.66 1023.54,284.76 1051.19,311.39 " fill="none" id="set_choice-remove_entry" style="stroke:#A80036;stroke-width:1.0"/>
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> + <text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="102" x="994" y="227.5669">remove existing</text>
> + <!--link set_choice to replace_choice-->
> + <path d="M722,113.07 C722,134.33 722,180.92 722,205.72 " fill="none" id="set_choice-replace_choice" style="stroke:#A80036;stroke-width:1.0"/>
> + <polygon fill="#A80036" points="722,210.95,726,201.95,722,205.95,718,201.95,722,210.95" style="stroke:#A80036;stroke-width:1.0"/>
> + <text fill="#000000" font-family="sans-serif" font-size="13" lengthAdjust="spacingAndGlyphs" textLength="100" x="723" y="156.0669">replace existing</text>
> + <!--link XFS_DAS_DONE to *end-->
> + <path d="M717,1370.21 C717,1387.84 717,1411.13 717,1425.84 " fill="none" id="XFS_DAS_DONE-*end" style="stroke:#A80036;stroke-width:1.0"/>
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> +</svg>
> --
> 2.25.1
>
next prev parent reply other threads:[~2022-10-06 0:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-05 23:38 [PATCH v3] xfs: add LARP state transition diagram Catherine Hoang
2022-10-06 0:14 ` Darrick J. Wong [this message]
2022-10-06 1:25 ` Catherine Hoang
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