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Message-ID: <4E9D1C73.3000205@jp.fujitsu.com> Date: Tue, 18 Oct 2011 15:28:03 +0900 From: Toshiyuki Okajima <toshi.okajima@...fujitsu.com> To: Miklos Szeredi <miklos@...redi.hu> CC: Toshiyuki Okajima <toshi.okajima@...fujitsu.com>, viro@...IV.linux.org.uk, linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, jack@...e.cz, hch@...radead.org, akpm@...ux-foundation.org, mszeredi@...e.cz Subject: Re: [PATCH 0/13] read-only remount race fix v7 Miklos-san, (2011/10/13 16:10), Toshiyuki Okajima wrote: > Hi. > > (2011/10/12 23:48), Miklos Szeredi wrote: >> Here's an update of the read-only remount race fixes. >> >> It should now fix the races after unlink. I haven't been able to >> trigger the bad behavior with the test scripts provided by Toshiyuki >> Okajima. >> >> Toshiyuki-san, could you please test these patches too? > OK. I will test them with ext4. Please wait. I have tested your latest patch set by my reproducer with ext4. On my environment, this reproducer usually detects "EXT4-fs (xxx): Couldn't remount RDWR because of unprocessed orphan inode list" message within 20 minutes when I use your previous patch set. However, when I use your latest patche set, this producer has not yet detected the message for 2 days. So, I think your latest patch set fixes the problem that delayed deletion can start when we remount a superblock read-only. Tested-by: Toshiyuki Okajima <toshi.okajima@...fujitsu.com> Regards, Toshiyuki Okajima > > Best Regards, > Toshiyuki Okajima > >> >> Thanks, >> Miklos >> --- >> >> Miklos Szeredi (13): >> vfs: ignore error on forced remount >> vfs: keep list of mounts for each superblock >> vfs: protect remounting superblock read-only >> vfs: fs_may_remount_ro: turn unnecessary check into a WARN_ON >> hypfs: remove unnecessary nlink setting >> jfs: remove unnecessary nlink setting >> ocfs2: remove unnecessary nlink setting >> logfs: remove unnecessary nlink setting >> filesystems: add missing nlink wrappers >> filesystems: add set_nlink() >> vfs: protect i_nlink >> vfs: count unlinked inodes >> vfs: prevent remount read-only if pending removes >> >> --- >> arch/s390/hypfs/inode.c | 6 +-- >> drivers/mtd/mtdchar.c | 2 +- >> drivers/staging/pohmelfs/inode.c | 2 +- >> fs/9p/vfs_inode.c | 4 +- >> fs/9p/vfs_inode_dotl.c | 4 +- >> fs/adfs/inode.c | 2 +- >> fs/affs/amigaffs.c | 4 +- >> fs/affs/inode.c | 8 ++-- >> fs/affs/namei.c | 6 +- >> fs/afs/fsclient.c | 2 +- >> fs/afs/inode.c | 4 +- >> fs/autofs4/inode.c | 2 +- >> fs/befs/linuxvfs.c | 2 +- >> fs/bfs/dir.c | 2 +- >> fs/bfs/inode.c | 2 +- >> fs/binfmt_misc.c | 2 +- >> fs/btrfs/delayed-inode.c | 2 +- >> fs/btrfs/disk-io.c | 2 +- >> fs/btrfs/inode.c | 4 +- >> fs/btrfs/tree-log.c | 2 +- >> fs/ceph/caps.c | 2 +- >> fs/ceph/inode.c | 2 +- >> fs/cifs/inode.c | 6 +- >> fs/cifs/link.c | 2 +- >> fs/coda/coda_linux.c | 2 +- >> fs/coda/dir.c | 2 +- >> fs/devpts/inode.c | 4 +- >> fs/ecryptfs/inode.c | 12 +++--- >> fs/efs/inode.c | 2 +- >> fs/exofs/inode.c | 2 +- >> fs/ext2/ialloc.c | 2 +- >> fs/ext2/inode.c | 2 +- >> fs/ext3/ialloc.c | 2 +- >> fs/ext3/inode.c | 2 +- >> fs/ext3/namei.c | 6 +- >> fs/ext4/ialloc.c | 2 +- >> fs/ext4/inode.c | 2 +- >> fs/ext4/migrate.c | 2 +- >> fs/ext4/namei.c | 8 ++-- >> fs/fat/inode.c | 4 +- >> fs/fat/namei_msdos.c | 2 +- >> fs/fat/namei_vfat.c | 2 +- >> fs/file_table.c | 23 ---------- >> fs/freevxfs/vxfs_inode.c | 2 +- >> fs/fuse/control.c | 2 +- >> fs/fuse/inode.c | 2 +- >> fs/gfs2/glops.c | 2 +- >> fs/hfs/dir.c | 4 +- >> fs/hfs/inode.c | 4 +- >> fs/hfsplus/dir.c | 4 +- >> fs/hfsplus/inode.c | 10 ++-- >> fs/hostfs/hostfs_kern.c | 2 +- >> fs/hpfs/dir.c | 2 +- >> fs/hpfs/inode.c | 10 ++-- >> fs/hpfs/namei.c | 8 ++-- >> fs/hppfs/hppfs.c | 2 +- >> fs/hugetlbfs/inode.c | 2 +- >> fs/inode.c | 83 +++++++++++++++++++++++++++++++++++++- >> fs/internal.h | 1 + >> fs/isofs/inode.c | 4 +- >> fs/isofs/rock.c | 4 +- >> fs/jffs2/dir.c | 6 +- >> fs/jffs2/fs.c | 6 +- >> fs/jfs/jfs_imap.c | 6 +- >> fs/jfs/jfs_inode.c | 2 +- >> fs/jfs/namei.c | 12 +++--- >> fs/jfs/super.c | 1 - >> fs/libfs.c | 2 +- >> fs/logfs/dir.c | 8 ++-- >> fs/logfs/inode.c | 3 +- >> fs/logfs/readwrite.c | 2 +- >> fs/minix/inode.c | 4 +- >> fs/namespace.c | 57 +++++++++++++++++++++++++- >> fs/ncpfs/inode.c | 2 +- >> fs/nfs/inode.c | 6 +- >> fs/nilfs2/inode.c | 4 +- >> fs/nilfs2/namei.c | 2 +- >> fs/ntfs/inode.c | 8 ++-- >> fs/ocfs2/dir.c | 4 +- >> fs/ocfs2/dlmglue.c | 2 +- >> fs/ocfs2/inode.c | 4 +- >> fs/ocfs2/namei.c | 18 ++++----- >> fs/openpromfs/inode.c | 4 +- >> fs/proc/base.c | 12 +++--- >> fs/proc/generic.c | 2 +- >> fs/proc/inode.c | 2 +- >> fs/proc/proc_sysctl.c | 2 +- >> fs/qnx4/inode.c | 2 +- >> fs/reiserfs/inode.c | 10 ++-- >> fs/reiserfs/namei.c | 16 ++++---- >> fs/romfs/super.c | 2 +- >> fs/squashfs/inode.c | 18 ++++---- >> fs/stack.c | 2 +- >> fs/super.c | 27 ++++++++++-- >> fs/sysfs/inode.c | 2 +- >> fs/sysv/inode.c | 2 +- >> fs/ubifs/super.c | 2 +- >> fs/ubifs/xattr.c | 4 +- >> fs/udf/inode.c | 8 ++- >> fs/udf/namei.c | 15 +++---- >> fs/ufs/ialloc.c | 2 +- >> fs/ufs/inode.c | 4 +- >> fs/xfs/xfs_iops.c | 2 +- >> include/linux/fs.h | 66 ++++++++++-------------------- >> include/linux/mount.h | 1 + >> mm/shmem.c | 2 +- >> 106 files changed, 389 insertions(+), 286 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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