2018-06-06 02:42:14 +00:00
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# SPDX-License-Identifier: GPL-2.0
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2007-11-27 05:53:47 +00:00
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#
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# Copyright (c) 2000-2005 Silicon Graphics, Inc.
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# All Rights Reserved.
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#
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2019-05-13 06:22:16 +00:00
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ccflags-y += -I $(srctree)/$(src) # needed for trace events
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ccflags-y += -I $(srctree)/$(src)/libxfs
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2011-08-14 17:13:00 +00:00
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2007-11-27 05:53:47 +00:00
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obj-$(CONFIG_XFS_FS) += xfs.o
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2007-11-28 07:28:09 +00:00
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2011-08-12 21:21:35 +00:00
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# this one should be compiled first, as the tracing macros can easily blow up
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xfs-y += xfs_trace.o
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2007-11-27 05:53:47 +00:00
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2014-06-25 04:57:22 +00:00
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# build the libxfs code first
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xfs-y += $(addprefix libxfs/, \
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2018-05-14 06:10:08 +00:00
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xfs_ag.o \
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2014-06-25 04:57:53 +00:00
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xfs_alloc.o \
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xfs_alloc_btree.o \
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xfs_attr.o \
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xfs_attr_leaf.o \
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xfs_attr_remote.o \
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2015-07-29 01:52:08 +00:00
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xfs_bit.o \
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2014-06-25 04:57:53 +00:00
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xfs_bmap.o \
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xfs_bmap_btree.o \
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xfs_btree.o \
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2020-03-11 17:40:26 +00:00
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xfs_btree_staging.o \
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2014-06-25 04:57:53 +00:00
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xfs_da_btree.o \
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2016-08-03 01:12:25 +00:00
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xfs_defer.o \
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2014-06-25 04:57:53 +00:00
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xfs_dir2.o \
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xfs_dir2_block.o \
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xfs_dir2_data.o \
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xfs_dir2_leaf.o \
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xfs_dir2_node.o \
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xfs_dir2_sf.o \
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xfs_dquot_buf.o \
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xfs_ialloc.o \
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xfs_ialloc_btree.o \
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2017-11-03 17:34:46 +00:00
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xfs_iext_tree.o \
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2014-06-25 04:57:53 +00:00
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xfs_inode_fork.o \
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xfs_inode_buf.o \
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xfs_log_rlimit.o \
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xfs: set up per-AG free space reservations
One unfortunate quirk of the reference count and reverse mapping
btrees -- they can expand in size when blocks are written to *other*
allocation groups if, say, one large extent becomes a lot of tiny
extents. Since we don't want to start throwing errors in the middle
of CoWing, we need to reserve some blocks to handle future expansion.
The transaction block reservation counters aren't sufficient here
because we have to have a reserve of blocks in every AG, not just
somewhere in the filesystem.
Therefore, create two per-AG block reservation pools. One feeds the
AGFL so that rmapbt expansion always succeeds, and the other feeds all
other metadata so that refcountbt expansion never fails.
Use the count of how many reserved blocks we need to have on hand to
create a virtual reservation in the AG. Through selective clamping of
the maximum length of allocation requests and of the length of the
longest free extent, we can make it look like there's less free space
in the AG unless the reservation owner is asking for blocks.
In other words, play some accounting tricks in-core to make sure that
we always have blocks available. On the plus side, there's nothing to
clean up if we crash, which is contrast to the strategy that the rough
draft used (actually removing extents from the freespace btrees).
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2016-09-19 00:30:52 +00:00
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xfs_ag_resv.o \
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2016-08-03 01:33:43 +00:00
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xfs_rmap.o \
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2016-08-03 01:36:07 +00:00
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xfs_rmap_btree.o \
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2016-10-03 16:11:19 +00:00
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xfs_refcount.o \
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2016-10-03 16:11:18 +00:00
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xfs_refcount_btree.o \
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2014-06-25 04:57:22 +00:00
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xfs_sb.o \
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2014-06-25 04:57:53 +00:00
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xfs_symlink_remote.o \
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2019-07-12 22:07:05 +00:00
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xfs_trans_inode.o \
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2014-06-25 04:57:53 +00:00
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xfs_trans_resv.o \
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2018-06-07 14:53:33 +00:00
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xfs_types.o \
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2014-06-25 04:57:53 +00:00
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)
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# xfs_rtbitmap is shared with libxfs
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xfs-$(CONFIG_XFS_RT) += $(addprefix libxfs/, \
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xfs_rtbitmap.o \
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2014-06-25 04:57:22 +00:00
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)
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2011-08-12 21:21:35 +00:00
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# highlevel code
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xfs-y += xfs_aops.o \
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2013-08-12 10:49:39 +00:00
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xfs_attr_inactive.o \
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2013-08-12 10:49:38 +00:00
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xfs_attr_list.o \
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2013-08-12 10:49:42 +00:00
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xfs_bmap_util.o \
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2019-06-29 02:27:26 +00:00
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xfs_bio_io.o \
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2011-08-12 21:21:35 +00:00
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xfs_buf.o \
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xfs: test dir/attr hash when loading module
Back in the 6.2-rc1 days, Eric Whitney reported a fstests regression in
ext4 against generic/454. The cause of this test failure was the
unfortunate combination of setting an xattr name containing UTF8 encoded
emoji, an xattr hash function that accepted a char pointer with no
explicit signedness, signed type extension of those chars to an int, and
the 6.2 build tools maintainers deciding to mandate -funsigned-char
across the board. As a result, the ondisk extended attribute structure
written out by 6.1 and 6.2 were not the same.
This discrepancy, in fact, had been noticeable if a filesystem with such
an xattr were moved between any two architectures that don't employ the
same signedness of a raw "char" declaration. The only reason anyone
noticed is that x86 gcc defaults to signed, and no such -funsigned-char
update was made to e2fsprogs, so e2fsck immediately started reporting
data corruption.
After a day and a half of discussing how to handle this use case (xattrs
with bit 7 set anywhere in the name) without breaking existing users,
Linus merged his own patch and didn't tell the maintainer. None of the
ext4 developers realized this until AUTOSEL announced that the commit
had been backported to stable.
In the end, this problem could have been detected much earlier if there
had been any useful tests of hash function(s) in use inside ext4 to make
sure that they always produce the same outputs given the same inputs.
The XFS dirent/xattr name hash takes a uint8_t*, so I don't think it's
vulnerable to this problem. However, let's avoid all this drama by
adding our own self test to check that the da hash produces the same
outputs for a static pile of inputs on various platforms. This enables
us to fix any breakage that may result in a controlled fashion. The
buffer and test data are identical to the patches submitted to xfsprogs.
Link: https://lore.kernel.org/linux-ext4/Y8bpkm3jA3bDm3eL@debian-BULLSEYE-live-builder-AMD64/
Link: https://lore.kernel.org/linux-xfs/ZBUKCRR7xvIqPrpX@destitution/T/#md38272cc684e2c0d61494435ccbb91f022e8dee4
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-03-16 16:31:20 +00:00
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xfs_dahash_test.o \
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2013-08-12 10:49:36 +00:00
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xfs_dir2_readdir.o \
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2011-08-12 21:21:35 +00:00
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xfs_discard.o \
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xfs_error.o \
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xfs_export.o \
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2012-04-29 10:39:43 +00:00
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xfs_extent_busy.o \
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2011-08-12 21:21:35 +00:00
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xfs_file.o \
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xfs_filestream.o \
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2017-03-28 21:56:37 +00:00
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xfs_fsmap.o \
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2011-08-12 21:21:35 +00:00
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xfs_fsops.o \
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xfs_globals.o \
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2019-04-12 14:40:25 +00:00
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xfs_health.o \
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2012-10-08 10:56:09 +00:00
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xfs_icache.o \
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2011-08-12 21:21:35 +00:00
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xfs_ioctl.o \
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xfs_iomap.o \
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xfs_iops.o \
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2014-06-25 04:57:53 +00:00
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xfs_inode.o \
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2011-08-12 21:21:35 +00:00
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xfs_itable.o \
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2019-07-02 16:39:38 +00:00
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xfs_iwalk.o \
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2011-08-12 21:21:35 +00:00
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xfs_message.o \
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2013-08-12 10:49:41 +00:00
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xfs_mount.o \
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2011-08-12 21:21:35 +00:00
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xfs_mru_cache.o \
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2019-07-03 14:33:26 +00:00
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xfs_pwork.o \
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2016-10-03 16:11:32 +00:00
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xfs_reflink.o \
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2015-10-18 21:42:46 +00:00
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xfs_stats.o \
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2013-04-03 05:11:18 +00:00
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xfs_super.o \
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2013-08-12 10:49:40 +00:00
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xfs_symlink.o \
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2014-07-14 22:07:01 +00:00
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xfs_sysfs.o \
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2013-08-12 10:49:32 +00:00
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xfs_trans.o \
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2013-04-03 05:11:18 +00:00
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xfs_xattr.o \
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2017-05-04 13:26:23 +00:00
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kmem.o
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2007-11-27 05:53:47 +00:00
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2011-08-12 21:21:35 +00:00
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# low-level transaction/log code
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xfs-y += xfs_log.o \
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xfs_log_cil.o \
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2016-10-03 16:11:25 +00:00
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xfs_bmap_item.o \
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2011-08-12 21:21:35 +00:00
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xfs_buf_item.o \
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2020-05-01 23:00:45 +00:00
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xfs_buf_item_recover.o \
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xfs_dquot_item_recover.o \
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2011-08-12 21:21:35 +00:00
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xfs_extfree_item.o \
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2022-05-04 02:41:02 +00:00
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xfs_attr_item.o \
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2014-06-25 04:57:53 +00:00
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xfs_icreate_item.o \
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2011-08-12 21:21:35 +00:00
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xfs_inode_item.o \
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2020-05-01 23:00:45 +00:00
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xfs_inode_item_recover.o \
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2022-07-14 01:47:42 +00:00
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xfs_iunlink_item.o \
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2016-10-03 16:11:20 +00:00
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xfs_refcount_item.o \
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2016-08-03 02:04:45 +00:00
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xfs_rmap_item.o \
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2014-06-25 04:57:53 +00:00
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xfs_log_recover.o \
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2007-11-27 05:53:47 +00:00
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xfs_trans_ail.o \
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2019-07-12 22:07:05 +00:00
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xfs_trans_buf.o
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2007-11-27 05:53:47 +00:00
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2011-08-12 21:21:35 +00:00
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# optional features
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xfs-$(CONFIG_XFS_QUOTA) += xfs_dquot.o \
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xfs_dquot_item.o \
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xfs_trans_dquot.o \
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xfs_qm_syscalls.o \
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xfs_qm_bhv.o \
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xfs_qm.o \
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xfs_quotaops.o
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2013-10-14 22:17:56 +00:00
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# xfs_rtbitmap is shared with libxfs
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2014-06-25 04:57:53 +00:00
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xfs-$(CONFIG_XFS_RT) += xfs_rtalloc.o
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2013-10-14 22:17:56 +00:00
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2011-08-12 21:21:35 +00:00
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xfs-$(CONFIG_XFS_POSIX_ACL) += xfs_acl.o
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xfs-$(CONFIG_SYSCTL) += xfs_sysctl.o
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xfs-$(CONFIG_COMPAT) += xfs_ioctl32.o
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2016-07-08 13:53:20 +00:00
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xfs-$(CONFIG_EXPORTFS_BLOCK_OPS) += xfs_pnfs.o
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2017-10-18 04:37:34 +00:00
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2022-06-03 05:37:30 +00:00
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# notify failure
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ifeq ($(CONFIG_MEMORY_FAILURE),y)
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xfs-$(CONFIG_FS_DAX) += xfs_notify_failure.o
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endif
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xfs: allow queued AG intents to drain before scrubbing
When a writer thread executes a chain of log intent items, the AG header
buffer locks will cycle during a transaction roll to get from one intent
item to the next in a chain. Although scrub takes all AG header buffer
locks, this isn't sufficient to guard against scrub checking an AG while
that writer thread is in the middle of finishing a chain because there's
no higher level locking primitive guarding allocation groups.
When there's a collision, cross-referencing between data structures
(e.g. rmapbt and refcountbt) yields false corruption events; if repair
is running, this results in incorrect repairs, which is catastrophic.
Fix this by adding to the perag structure the count of active intents
and make scrub wait until it has both AG header buffer locks and the
intent counter reaches zero.
One quirk of the drain code is that deferred bmap updates also bump and
drop the intent counter. A fundamental decision made during the design
phase of the reverse mapping feature is that updates to the rmapbt
records are always made by the same code that updates the primary
metadata. In other words, callers of bmapi functions expect that the
bmapi functions will queue deferred rmap updates.
Some parts of the reflink code queue deferred refcount (CUI) and bmap
(BUI) updates in the same head transaction, but the deferred work
manager completely finishes the CUI before the BUI work is started. As
a result, the CUI drops the intent count long before the deferred rmap
(RUI) update even has a chance to bump the intent count. The only way
to keep the intent count elevated between the CUI and RUI is for the BUI
to bump the counter until the RUI has been created.
A second quirk of the intent drain code is that deferred work items must
increment the intent counter as soon as the work item is added to the
transaction. When a BUI completes and queues an RUI, the RUI must
increment the counter before the BUI decrements it. The only way to
accomplish this is to require that the counter be bumped as soon as the
deferred work item is created in memory.
In the next patches we'll improve on this facility, but this patch
provides the basic functionality.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
2023-04-12 01:59:58 +00:00
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xfs-$(CONFIG_XFS_DRAIN_INTENTS) += xfs_drain.o
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2017-10-18 04:37:34 +00:00
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# online scrub/repair
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ifeq ($(CONFIG_XFS_ONLINE_SCRUB),y)
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# Tracepoints like to blow up, so build that before everything else
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xfs-y += $(addprefix scrub/, \
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trace.o \
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2017-10-18 04:37:38 +00:00
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agheader.o \
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2017-10-18 04:37:40 +00:00
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alloc.o \
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2017-10-18 04:37:45 +00:00
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attr.o \
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2023-04-12 02:00:38 +00:00
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bitmap.o \
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2017-10-18 04:37:43 +00:00
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bmap.o \
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2017-10-18 04:37:37 +00:00
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btree.o \
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2017-10-18 04:37:36 +00:00
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common.o \
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2017-10-18 04:37:43 +00:00
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dabtree.o \
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2017-10-18 04:37:44 +00:00
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dir.o \
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2019-04-26 01:26:24 +00:00
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fscounters.o \
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2019-04-16 15:22:00 +00:00
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health.o \
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2017-10-18 04:37:40 +00:00
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ialloc.o \
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2017-10-18 04:37:42 +00:00
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inode.o \
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2017-10-18 04:37:46 +00:00
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parent.o \
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2023-04-12 02:00:17 +00:00
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readdir.o \
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2017-10-18 04:37:41 +00:00
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refcount.o \
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2017-10-18 04:37:41 +00:00
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rmap.o \
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2017-10-18 04:37:34 +00:00
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scrub.o \
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2017-10-18 04:37:45 +00:00
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symlink.o \
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2023-08-10 14:48:04 +00:00
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xfarray.o \
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xfile.o \
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2017-10-18 04:37:34 +00:00
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)
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2017-10-18 04:37:46 +00:00
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2023-08-10 14:48:07 +00:00
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xfs-$(CONFIG_XFS_ONLINE_SCRUB_STATS) += scrub/stats.o
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2023-08-10 14:48:09 +00:00
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xfs-$(CONFIG_XFS_RT) += $(addprefix scrub/, \
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rtbitmap.o \
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rtsummary.o \
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)
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2017-10-18 04:37:47 +00:00
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xfs-$(CONFIG_XFS_QUOTA) += scrub/quota.o
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2018-05-14 13:34:36 +00:00
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# online repair
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ifeq ($(CONFIG_XFS_ONLINE_REPAIR),y)
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xfs-y += $(addprefix scrub/, \
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2018-05-30 05:18:12 +00:00
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agheader_repair.o \
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2023-08-10 14:48:01 +00:00
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reap.o \
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2018-05-14 13:34:36 +00:00
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repair.o \
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)
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endif
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2017-10-18 04:37:34 +00:00
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endif
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