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Wong" , Ted Tso , Dave Chinner , Matthew Wilcox , , , linux-f2fs-devel@lists.sourceforge.net, linux-cifs@vger.kernel.org, ceph-devel@vger.kernel.org, Jan Kara , Damien Le Moal , Johannes Thumshirn , Christoph Hellwig Subject: [PATCH 10/14] zonefs: Convert to using invalidate_lock Date: Thu, 15 Jul 2021 15:40:20 +0200 Message-Id: <20210715134032.24868-10-jack@suse.cz> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20210715133202.5975-1-jack@suse.cz> References: <20210715133202.5975-1-jack@suse.cz> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=3579; h=from:subject; bh=A/7AtC2eRQANRoxuBRHLYLyusp8+Mdp8nN+Gi+I3MCo=; b=owEBbQGS/pANAwAIAZydqgc/ZEDZAcsmYgBg8DrEO3dYj/Mgvj7UVbam0r3XqE0cuodG8u0lHKX2 sTw+xtuJATMEAAEIAB0WIQSrWdEr1p4yirVVKBycnaoHP2RA2QUCYPA6xAAKCRCcnaoHP2RA2W7iB/ 9Rr4rYt29r9OteDYOD5KGYGNIdVXzFVly5KFNWpbENDAnyWaED/ht35k066V0i46mFNsBYq6kbmVTo nHlfgk5At/dN4qG1TeYOBdksybSXuJ+w9qTodhzXW8wX1sR4ejWDPzDzDcR2Ge0XoACVIMeIIxUkzk cva03vvIfap9HzOX8Pm/8jz+VjSPOW5uT3u891IwYWKAPHmX7pyqBPLNPtmza5EAqU3Ft5ympgXWUG wJViNbI2+6m1c4BINQl1iyqiolYgYNRmulmPXupRKg/0RTdX/aBBISoKrOGzHsFL44yFnlR5BDKtjc RM2JUCr4r+E21jcL2SxNJZoUwZTqWz X-Developer-Key: i=jack@suse.cz; a=openpgp; fpr=93C6099A142276A28BBE35D815BC833443038D8C Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=xThUyV02; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b=Z0yU6Ey4; spf=pass (imf24.hostedemail.com: domain of jack@suse.cz designates 195.135.220.28 as permitted sender) smtp.mailfrom=jack@suse.cz; dmarc=none X-Rspamd-Server: rspam02 X-Stat-Signature: ebgrxw34xxnozr5rbj3htc8a5aey8p6t X-Rspamd-Queue-Id: 32FA3B00080C X-HE-Tag: 1626356436-754859 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: Use invalidate_lock instead of zonefs' private i_mmap_sem. The intended purpose is exactly the same. CC: Damien Le Moal CC: Johannes Thumshirn CC: Acked-by: Damien Le Moal Reviewed-by: Christoph Hellwig Signed-off-by: Jan Kara --- fs/zonefs/super.c | 23 +++++------------------ fs/zonefs/zonefs.h | 7 +++---- 2 files changed, 8 insertions(+), 22 deletions(-) diff --git a/fs/zonefs/super.c b/fs/zonefs/super.c index dbf03635869c..f323bf3b0e82 100644 --- a/fs/zonefs/super.c +++ b/fs/zonefs/super.c @@ -462,7 +462,7 @@ static int zonefs_file_truncate(struct inode *inode, loff_t isize) inode_dio_wait(inode); /* Serialize against page faults */ - down_write(&zi->i_mmap_sem); + filemap_invalidate_lock(inode->i_mapping); /* Serialize against zonefs_iomap_begin() */ mutex_lock(&zi->i_truncate_mutex); @@ -500,7 +500,7 @@ static int zonefs_file_truncate(struct inode *inode, loff_t isize) unlock: mutex_unlock(&zi->i_truncate_mutex); - up_write(&zi->i_mmap_sem); + filemap_invalidate_unlock(inode->i_mapping); return ret; } @@ -575,18 +575,6 @@ static int zonefs_file_fsync(struct file *file, loff_t start, loff_t end, return ret; } -static vm_fault_t zonefs_filemap_fault(struct vm_fault *vmf) -{ - struct zonefs_inode_info *zi = ZONEFS_I(file_inode(vmf->vma->vm_file)); - vm_fault_t ret; - - down_read(&zi->i_mmap_sem); - ret = filemap_fault(vmf); - up_read(&zi->i_mmap_sem); - - return ret; -} - static vm_fault_t zonefs_filemap_page_mkwrite(struct vm_fault *vmf) { struct inode *inode = file_inode(vmf->vma->vm_file); @@ -607,16 +595,16 @@ static vm_fault_t zonefs_filemap_page_mkwrite(struct vm_fault *vmf) file_update_time(vmf->vma->vm_file); /* Serialize against truncates */ - down_read(&zi->i_mmap_sem); + filemap_invalidate_lock_shared(inode->i_mapping); ret = iomap_page_mkwrite(vmf, &zonefs_iomap_ops); - up_read(&zi->i_mmap_sem); + filemap_invalidate_unlock_shared(inode->i_mapping); sb_end_pagefault(inode->i_sb); return ret; } static const struct vm_operations_struct zonefs_file_vm_ops = { - .fault = zonefs_filemap_fault, + .fault = filemap_fault, .map_pages = filemap_map_pages, .page_mkwrite = zonefs_filemap_page_mkwrite, }; @@ -1158,7 +1146,6 @@ static struct inode *zonefs_alloc_inode(struct super_block *sb) inode_init_once(&zi->i_vnode); mutex_init(&zi->i_truncate_mutex); - init_rwsem(&zi->i_mmap_sem); zi->i_wr_refcnt = 0; return &zi->i_vnode; diff --git a/fs/zonefs/zonefs.h b/fs/zonefs/zonefs.h index 51141907097c..7b147907c328 100644 --- a/fs/zonefs/zonefs.h +++ b/fs/zonefs/zonefs.h @@ -70,12 +70,11 @@ struct zonefs_inode_info { * and changes to the inode private data, and in particular changes to * a sequential file size on completion of direct IO writes. * Serialization of mmap read IOs with truncate and syscall IO - * operations is done with i_mmap_sem in addition to i_truncate_mutex. - * Only zonefs_seq_file_truncate() takes both lock (i_mmap_sem first, - * i_truncate_mutex second). + * operations is done with invalidate_lock in addition to + * i_truncate_mutex. Only zonefs_seq_file_truncate() takes both lock + * (invalidate_lock first, i_truncate_mutex second). */ struct mutex i_truncate_mutex; - struct rw_semaphore i_mmap_sem; /* guarded by i_truncate_mutex */ unsigned int i_wr_refcnt;