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bh=s9Q4KfHn3HSt2gTl2f2cGyCa4/oK4nyK6I0AQR5Sn/o=; b=ZtmJkgPVFko+CfpGoa9qRmTzekYGqY036L5Of93tInpaMMyCxg4FPYWfQ3creUou4EVPdq IYh0VFa01Ce2LoPnWn+4STu4hxYnwJ+lNwgB4h6Fkez/r7CGp3pGBeMPBgSpl2aJCUnXL8 GjQpdVLuTnvsaA0MF614dJapXpENWEc= X-MC-Unique: wKh1zy8FNJikitNdiy4JLg-1 From: Kevin Wolf To: qemu-block@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com, eblake@redhat.com, eesposit@redhat.com, pbonzini@redhat.com, vsementsov@yandex-team.ru, qemu-devel@nongnu.org Subject: [PATCH 02/21] preallocate: Factor out preallocate_truncate_to_real_size() Date: Thu, 17 Aug 2023 14:50:01 +0200 Message-ID: <20230817125020.208339-3-kwolf@redhat.com> In-Reply-To: <20230817125020.208339-1-kwolf@redhat.com> References: <20230817125020.208339-1-kwolf@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.3 Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.021, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1692276706934100003 Content-Type: text/plain; charset="utf-8" It's essentially the same code in preallocate_check_perm() and preallocate_close(), except that the latter ignores errors. Signed-off-by: Kevin Wolf Reviewed-by: Emanuele Giuseppe Esposito Reviewed-by: Eric Blake Reviewed-by: Stefan Hajnoczi --- block/preallocate.c | 48 +++++++++++++++++++++------------------------ 1 file changed, 22 insertions(+), 26 deletions(-) diff --git a/block/preallocate.c b/block/preallocate.c index 4d82125036..3259c51c1b 100644 --- a/block/preallocate.c +++ b/block/preallocate.c @@ -162,26 +162,39 @@ static int preallocate_open(BlockDriverState *bs, QDi= ct *options, int flags, return 0; } =20 -static void preallocate_close(BlockDriverState *bs) +static int preallocate_truncate_to_real_size(BlockDriverState *bs, Error *= *errp) { - int ret; BDRVPreallocateState *s =3D bs->opaque; - - if (s->data_end < 0) { - return; - } + int ret; =20 if (s->file_end < 0) { s->file_end =3D bdrv_getlength(bs->file->bs); if (s->file_end < 0) { - return; + error_setg_errno(errp, -s->file_end, "Failed to get file lengt= h"); + return s->file_end; } } =20 if (s->data_end < s->file_end) { ret =3D bdrv_truncate(bs->file, s->data_end, true, PREALLOC_MODE_O= FF, 0, NULL); - s->file_end =3D ret < 0 ? ret : s->data_end; + if (ret < 0) { + error_setg_errno(errp, -ret, "Failed to drop preallocation"); + s->file_end =3D ret; + return ret; + } + s->file_end =3D s->data_end; + } + + return 0; +} + +static void preallocate_close(BlockDriverState *bs) +{ + BDRVPreallocateState *s =3D bs->opaque; + + if (s->data_end >=3D 0) { + preallocate_truncate_to_real_size(bs, NULL); } } =20 @@ -473,24 +486,7 @@ static int preallocate_check_perm(BlockDriverState *bs, * We should truncate in check_perm, as in set_perm bs->file->perm= will * be already changed, and we should not violate it. */ - if (s->file_end < 0) { - s->file_end =3D bdrv_getlength(bs->file->bs); - if (s->file_end < 0) { - error_setg(errp, "Failed to get file length"); - return s->file_end; - } - } - - if (s->data_end < s->file_end) { - int ret =3D bdrv_truncate(bs->file, s->data_end, true, - PREALLOC_MODE_OFF, 0, NULL); - if (ret < 0) { - error_setg(errp, "Failed to drop preallocation"); - s->file_end =3D ret; - return ret; - } - s->file_end =3D s->data_end; - } + return preallocate_truncate_to_real_size(bs, errp); } =20 return 0; --=20 2.41.0