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OpenCloudOS-Kernel/fs/xfs/scrub/xfs_scrub.h

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xfs: convert to SPDX license tags Remove the verbose license text from XFS files and replace them with SPDX tags. This does not change the license of any of the code, merely refers to the common, up-to-date license files in LICENSES/ This change was mostly scripted. fs/xfs/Makefile and fs/xfs/libxfs/xfs_fs.h were modified by hand, the rest were detected and modified by the following command: for f in `git grep -l "GNU General" fs/xfs/` ; do echo $f cat $f | awk -f hdr.awk > $f.new mv -f $f.new $f done And the hdr.awk script that did the modification (including detecting the difference between GPL-2.0 and GPL-2.0+ licenses) is as follows: $ cat hdr.awk BEGIN { hdr = 1.0 tag = "GPL-2.0" str = "" } /^ \* This program is free software/ { hdr = 2.0; next } /any later version./ { tag = "GPL-2.0+" next } /^ \*\// { if (hdr > 0.0) { print "// SPDX-License-Identifier: " tag print str print $0 str="" hdr = 0.0 next } print $0 next } /^ \* / { if (hdr > 1.0) next if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 next } /^ \*/ { if (hdr > 0.0) next print $0 next } // { if (hdr > 0.0) { if (str != "") str = str "\n" str = str $0 next } print $0 } END { } $ Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2018-06-06 10:42:14 +08:00
// SPDX-License-Identifier: GPL-2.0+
xfs: create an ioctl to scrub AG metadata Create an ioctl that can be used to scrub internal filesystem metadata. The new ioctl takes the metadata type, an (optional) AG number, an (optional) inode number and generation, and a flags argument. This will be used by the upcoming XFS online scrub tool. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-18 12:37:34 +08:00
/*
* Copyright (C) 2017 Oracle. All Rights Reserved.
* Author: Darrick J. Wong <darrick.wong@oracle.com>
*/
#ifndef __XFS_SCRUB_H__
#define __XFS_SCRUB_H__
#ifndef CONFIG_XFS_ONLINE_SCRUB
xfs: fix scrub and remount-ro protection when running scrub While running a new fstest that races a readonly remount with scrub running in repair mode, I observed the kernel tripping over debugging assertions in the log quiesce code that were checking that the CIL was empty. When the sysadmin runs scrub in repair mode, the scrub code allocates real transactions (with reservations) to change things, but doesn't increment the superblock writers count to block a readonly remount attempt while it is running. We don't require the userspace caller to have a writable file descriptor to run repairs, so we have to call mnt_want_write_file to obtain freeze protection and increment the writers count. It's ok to remove the call to sb_start_write for the dry-run case because commit 8321ddb2fa29 removed the behavior where scrub and fsfreeze fight over the buffer LRU. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2021-03-23 00:51:51 +08:00
# define xfs_scrub_metadata(file, sm) (-ENOTTY)
xfs: create an ioctl to scrub AG metadata Create an ioctl that can be used to scrub internal filesystem metadata. The new ioctl takes the metadata type, an (optional) AG number, an (optional) inode number and generation, and a flags argument. This will be used by the upcoming XFS online scrub tool. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-18 12:37:34 +08:00
#else
xfs: fix scrub and remount-ro protection when running scrub While running a new fstest that races a readonly remount with scrub running in repair mode, I observed the kernel tripping over debugging assertions in the log quiesce code that were checking that the CIL was empty. When the sysadmin runs scrub in repair mode, the scrub code allocates real transactions (with reservations) to change things, but doesn't increment the superblock writers count to block a readonly remount attempt while it is running. We don't require the userspace caller to have a writable file descriptor to run repairs, so we have to call mnt_want_write_file to obtain freeze protection and increment the writers count. It's ok to remove the call to sb_start_write for the dry-run case because commit 8321ddb2fa29 removed the behavior where scrub and fsfreeze fight over the buffer LRU. Signed-off-by: Darrick J. Wong <djwong@kernel.org> Reviewed-by: Chandan Babu R <chandanrlinux@gmail.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
2021-03-23 00:51:51 +08:00
int xfs_scrub_metadata(struct file *file, struct xfs_scrub_metadata *sm);
xfs: create an ioctl to scrub AG metadata Create an ioctl that can be used to scrub internal filesystem metadata. The new ioctl takes the metadata type, an (optional) AG number, an (optional) inode number and generation, and a flags argument. This will be used by the upcoming XFS online scrub tool. Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com>
2017-10-18 12:37:34 +08:00
#endif /* CONFIG_XFS_ONLINE_SCRUB */
#endif /* __XFS_SCRUB_H__ */