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Thu, 3 Jun 2021 18:32:06 -0700 Received: by devvm3388.prn0.facebook.com (Postfix, from userid 111017) id 852527FA36D8; Thu, 3 Jun 2021 18:32:00 -0700 (PDT) From: Roman Gushchin To: Jan Kara , Tejun Heo CC: , , , Alexander Viro , Dennis Zhou , Dave Chinner , , Roman Gushchin Subject: [PATCH v7 4/6] writeback, cgroup: split out the functional part of inode_switch_wbs_work_fn() Date: Thu, 3 Jun 2021 18:31:57 -0700 Message-ID: <20210604013159.3126180-5-guro@fb.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210604013159.3126180-1-guro@fb.com> References: <20210604013159.3126180-1-guro@fb.com> MIME-Version: 1.0 X-FB-Internal: Safe X-Proofpoint-GUID: JQGSFxlKJt6UapC0NGfmNbFUF5vewAZ2 X-Proofpoint-ORIG-GUID: JQGSFxlKJt6UapC0NGfmNbFUF5vewAZ2 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-06-04_01:2021-06-04,2021-06-03 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 mlxlogscore=999 lowpriorityscore=0 adultscore=0 spamscore=0 malwarescore=0 phishscore=0 priorityscore=1501 bulkscore=0 suspectscore=0 mlxscore=0 clxscore=1015 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2106040009 X-FB-Internal: deliver X-Rspamd-Queue-Id: 4D9762BCD Authentication-Results: imf12.hostedemail.com; dkim=pass header.d=fb.com header.s=facebook header.b=TRSPLYI7; dmarc=pass (policy=reject) header.from=fb.com; spf=pass (imf12.hostedemail.com: domain of "prvs=5789f3dbb3=guro@fb.com" designates 67.231.145.42 as permitted sender) smtp.mailfrom="prvs=5789f3dbb3=guro@fb.com" X-Rspamd-Server: rspam03 X-Stat-Signature: yk1sncr4oj1bpq53f3upru43ezswm4w9 X-HE-Tag: 1622773281-431181 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Split out the functional part of the inode_switch_wbs_work_fn() function as inode_do switch_wbs() to reuse it later for switching inodes attached to dying cgwbs. This commit doesn't bring any functional changes. Signed-off-by: Roman Gushchin Reviewed-by: Jan Kara --- fs/fs-writeback.c | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index f0dfcd08073e..d46cdeeb6797 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -351,15 +351,12 @@ static void bdi_up_write_wb_switch_rwsem(struct backing_dev_info *bdi) up_write(&bdi->wb_switch_rwsem); } -static void inode_switch_wbs_work_fn(struct work_struct *work) +static void inode_do_switch_wbs(struct inode *inode, + struct bdi_writeback *new_wb) { - struct inode_switch_wbs_context *isw = - container_of(to_rcu_work(work), struct inode_switch_wbs_context, work); - struct inode *inode = isw->inode; struct backing_dev_info *bdi = inode_to_bdi(inode); struct address_space *mapping = inode->i_mapping; struct bdi_writeback *old_wb = inode->i_wb; - struct bdi_writeback *new_wb = isw->new_wb; XA_STATE(xas, &mapping->i_pages, 0); struct page *page; bool switched = false; @@ -470,11 +467,17 @@ static void inode_switch_wbs_work_fn(struct work_struct *work) wb_wakeup(new_wb); wb_put(old_wb); } - wb_put(new_wb); +} - iput(inode); - kfree(isw); +static void inode_switch_wbs_work_fn(struct work_struct *work) +{ + struct inode_switch_wbs_context *isw = + container_of(to_rcu_work(work), struct inode_switch_wbs_context, work); + inode_do_switch_wbs(isw->inode, isw->new_wb); + wb_put(isw->new_wb); + iput(isw->inode); + kfree(isw); atomic_dec(&isw_nr_in_flight); }