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GET /api/patches/2228768/?format=api
HTTP 200 OK
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{
    "id": 2228768,
    "url": "http://patchwork.ozlabs.org/api/patches/2228768/?format=api",
    "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/patch/05ace38b54ea49f462bcd6274c4a2528192e6949.1777281778.git.asj@kernel.org/",
    "project": {
        "id": 8,
        "url": "http://patchwork.ozlabs.org/api/projects/8/?format=api",
        "name": "Linux ext4 filesystem development",
        "link_name": "linux-ext4",
        "list_id": "linux-ext4.vger.kernel.org",
        "list_email": "linux-ext4@vger.kernel.org",
        "web_url": null,
        "scm_url": null,
        "webscm_url": null,
        "list_archive_url": "",
        "list_archive_url_format": "",
        "commit_url_format": ""
    },
    "msgid": "<05ace38b54ea49f462bcd6274c4a2528192e6949.1777281778.git.asj@kernel.org>",
    "list_archive_url": null,
    "date": "2026-04-27T10:19:33",
    "name": "[v3,1/9] fstests: add _loop_image_create_clone() helper",
    "commit_ref": null,
    "pull_url": null,
    "state": "new",
    "archived": false,
    "hash": "31da1fca1024f1c793779d5a3a003e80e59baddb",
    "submitter": {
        "id": 92722,
        "url": "http://patchwork.ozlabs.org/api/people/92722/?format=api",
        "name": "Anand Jain",
        "email": "asj@kernel.org"
    },
    "delegate": null,
    "mbox": "http://patchwork.ozlabs.org/project/linux-ext4/patch/05ace38b54ea49f462bcd6274c4a2528192e6949.1777281778.git.asj@kernel.org/mbox/",
    "series": [
        {
            "id": 501620,
            "url": "http://patchwork.ozlabs.org/api/series/501620/?format=api",
            "web_url": "http://patchwork.ozlabs.org/project/linux-ext4/list/?series=501620",
            "date": "2026-04-27T10:19:32",
            "name": "fstests: add test coverage for cloned filesystem ids",
            "version": 3,
            "mbox": "http://patchwork.ozlabs.org/series/501620/mbox/"
        }
    ],
    "comments": "http://patchwork.ozlabs.org/api/patches/2228768/comments/",
    "check": "pending",
    "checks": "http://patchwork.ozlabs.org/api/patches/2228768/checks/",
    "tags": {},
    "related": [],
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        ],
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        "From": "Anand Jain <asj@kernel.org>",
        "To": "fstests@vger.kernel.org",
        "Cc": "linux-btrfs@vger.kernel.org,\n\tlinux-ext4@vger.kernel.org,\n\tlinux-xfs@vger.kernel.org,\n\tlinux-f2fs@vger.kernel.org,\n\tamir73il@gmail.com,\n\tzlang@redhat.com,\n\thch@infradead.org",
        "Subject": "[PATCH v3 1/9] fstests: add _loop_image_create_clone() helper",
        "Date": "Mon, 27 Apr 2026 18:19:33 +0800",
        "Message-ID": "\n <05ace38b54ea49f462bcd6274c4a2528192e6949.1777281778.git.asj@kernel.org>",
        "X-Mailer": "git-send-email 2.43.0",
        "In-Reply-To": "<cover.1777281778.git.asj@kernel.org>",
        "References": "<cover.1777281778.git.asj@kernel.org>",
        "Precedence": "bulk",
        "X-Mailing-List": "linux-ext4@vger.kernel.org",
        "List-Id": "<linux-ext4.vger.kernel.org>",
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        "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on gandalf.ozlabs.org"
    },
    "content": "Introduce _loop_image_create_clone() and _loop_image_destroy() to mkfs an\nimage file and clone it to another image file, and attach a loop device to\nthem. And its destroy part.\n\nSigned-off-by: Anand Jain <asj@kernel.org>\n---\n common/rc | 44 ++++++++++++++++++++++++++++++++++++++++++++\n 1 file changed, 44 insertions(+)",
    "diff": "diff --git a/common/rc b/common/rc\nindex 9632b211b58f..0e7b7eb1d98f 100644\n--- a/common/rc\n+++ b/common/rc\n@@ -1503,6 +1503,50 @@ _scratch_resvblks()\n \tesac\n }\n \n+_loop_image_create_clone()\n+{\n+\tlocal -n _ret=$1\n+\tlocal pre_clone_tune_func=$2\n+\tlocal img_file=$TEST_DIR/${seq}.img\n+\tlocal img_file_clone=$TEST_DIR/${seq}_clone.img\n+\tlocal size=$(_small_fs_size_mb 128) # Smallest possible\n+\tlocal loop_devs\n+\n+\tsize=$((size * 1024 * 1024))\n+\t$XFS_IO_PROG -f -c \"truncate $size\" $img_file\n+\n+\tloop_devs=$(_create_loop_device $img_file)\n+\t_ret=($loop_devs)\n+\n+\tcase $FSTYP in\n+\txfs)\n+\t\t_mkfs_dev \"-s size=4096\" $img_file\n+\t\t;;\n+\tbtrfs)\n+\t\t_mkfs_dev $img_file\n+\t\t;;\n+\t*)\n+\t\t_mkfs_dev $img_file\n+\t\t;;\n+\tesac\n+\n+\t($pre_clone_tune_func)\n+\n+\tcp $img_file $img_file_clone\n+\n+\tloop_devs=\"$loop_devs $(_create_loop_device $img_file_clone)\"\n+\n+\t_ret=($loop_devs)\n+}\n+\n+_loop_image_destroy()\n+{\n+\tfor d in \"$@\"; do\n+\t\tlocal f=$(losetup --noheadings --output BACK-FILE $d)\n+\t\t_destroy_loop_device \"$d\"\n+\t\t[ -n \"$f\" ] && rm -f \"$f\"\n+\tdone\n+}\n \n # Repair scratch filesystem.  Returns 0 if the FS is good to go (either no\n # errors found or errors were fixed) and nonzero otherwise; also spits out\n",
    "prefixes": [
        "v3",
        "1/9"
    ]
}