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13eaec4b2a
linux_dsm_epyc7002/fs/xfs/libxfs
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Darrick J. Wong 13eaec4b2a xfs: don't commit sunit/swidth updates to disk if that would cause repair failures 
Alex Lyakas reported[1] that mounting an xfs filesystem with new sunit
and swidth values could cause xfs_repair to fail loudly.  The problem
here is that repair calculates the where mkfs should have allocated the
root inode, based on the superblock geometry.  The allocation decisions
depend on sunit, which means that we really can't go updating sunit if
it would lead to a subsequent repair failure on an otherwise correct
filesystem.

Port from xfs_repair some code that computes the location of the root
inode and teach mount to skip the ondisk update if it would cause
problems for repair.  Along the way we'll update the documentation,
provide a function for computing the minimum AGFL size instead of
open-coding it, and cut down some indenting in the mount code.

Note that we allow the mount to proceed (and new allocations will
reflect this new geometry) because we've never screened this kind of
thing before.  We'll have to wait for a new future incompat feature to
enforce correct behavior, alas.

Note that the geometry reporting always uses the superblock values, not
the incore ones, so that is what xfs_info and xfs_growfs will report.

[1] https://lore.kernel.org/linux-xfs/20191125130744.GA44777@bfoster/T/#m00f9594b511e076e2fcdd489d78bc30216d72a7d

Reported-by: Alex Lyakas <alex@zadara.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
2019-12-19 07:53:48 -08:00
..
xfs_ag_resv.c xfs: fix missing header includes 2019-11-07 13:00:53 -08:00
xfs_ag_resv.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_ag.c xfs: remove unused flags arg from xfs_get_aghdr_buf() 2019-10-06 15:39:05 -07:00
xfs_ag.h xfs: add a new ioctl to describe allocation group geometry 2019-04-14 18:15:57 -07:00
xfs_alloc_btree.c xfs: track active state of allocation btree cursors 2019-10-21 09:04:58 -07:00
xfs_alloc_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_alloc.c xfs: refactor agfl length computation function 2019-12-19 07:53:48 -08:00
xfs_alloc.h xfs: cleanup use of the XFS_ALLOC_ flags 2019-11-03 10:22:31 -08:00
xfs_attr_leaf.c xfs: remove the mappedbno argument to xfs_da_get_buf 2019-11-22 08:17:10 -08:00
xfs_attr_leaf.h xfs: remove the mappedbno argument to xfs_attr3_leaf_read 2019-11-22 08:17:09 -08:00
xfs_attr_remote.c xfs: fix missing header includes 2019-11-07 13:00:53 -08:00
xfs_attr_remote.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr_sf.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_attr.c xfs: split xfs_da3_node_read 2019-11-22 08:17:10 -08:00
xfs_attr.h xfs: allocate xattr buffer on demand 2019-08-30 22:43:57 -07:00
xfs_bit.c xfs: fix missing header includes 2019-11-07 13:00:53 -08:00
xfs_bit.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bmap_btree.c xfs: fix sign handling problem in xfs_bmbt_diff_two_keys 2019-08-28 08:31:01 -07:00
xfs_bmap_btree.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_bmap.c libxfs: resync with the userspace libxfs 2019-12-19 07:53:47 -08:00
xfs_bmap.h xfs: use a struct iomap in xfs_writepage_ctx 2019-10-21 08:51:59 -07:00
xfs_btree.c xfs: Remove kmem_zone_free() wrapper 2019-11-18 08:40:44 -08:00
xfs_btree.h xfs: actually check xfs_btree_check_block return in xfs_btree_islastblock 2019-11-11 12:42:52 -08:00
xfs_cksum.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_da_btree.c xfs: remove the mappedbno argument to xfs_da_get_buf 2019-11-22 08:17:10 -08:00
xfs_da_btree.h xfs: remove the mappedbno argument to xfs_da_get_buf 2019-11-22 08:17:10 -08:00
xfs_da_format.h xfs: move incore structures out of xfs_da_format.h 2019-11-10 16:54:19 -08:00
xfs_defer.c fs: xfs: Remove KM_NOSLEEP and KM_SLEEP. 2019-08-26 12:06:22 -07:00
xfs_defer.h xfs: streamline defer op type handling 2018-12-12 08:47:16 -08:00
xfs_dir2_block.c xfs: remove the mappedbno argument to xfs_da_read_buf 2019-11-22 08:17:10 -08:00
xfs_dir2_data.c xfs: remove the mappedbno argument to xfs_da_get_buf 2019-11-22 08:17:10 -08:00
xfs_dir2_leaf.c xfs: remove the mappedbno argument to xfs_da_get_buf 2019-11-22 08:17:10 -08:00
xfs_dir2_node.c xfs: remove the mappedbno argument to xfs_da_get_buf 2019-11-22 08:17:10 -08:00
xfs_dir2_priv.h libxfs: resync with the userspace libxfs 2019-12-19 07:53:47 -08:00
xfs_dir2_sf.c libxfs: resync with the userspace libxfs 2019-12-19 07:53:47 -08:00
xfs_dir2.c libxfs: resync with the userspace libxfs 2019-12-19 07:53:47 -08:00
xfs_dir2.h xfs: Fix deadlock between AGI and AGF when target_ip exists in xfs_rename() 2019-11-13 11:13:45 -08:00
xfs_dquot_buf.c xfs: remove the xfs_disk_dquot_t and xfs_dquot_t 2019-11-13 11:13:45 -08:00
xfs_errortag.h xfs: cache unlinked pointers in an rhashtable 2019-02-11 16:07:01 -08:00
xfs_format.h xfs: remove unused typedef definitions 2019-11-13 18:22:40 -08:00
xfs_fs.h New code for 5.5: 2019-12-02 14:46:22 -08:00
xfs_health.h xfs: introduce new v5 bulkstat structure 2019-07-03 20:36:26 -07:00
xfs_ialloc_btree.c xfs: create simplified inode walk function 2019-07-02 09:40:05 -07:00
xfs_ialloc_btree.h xfs: create simplified inode walk function 2019-07-02 09:40:05 -07:00
xfs_ialloc.c xfs: don't commit sunit/swidth updates to disk if that would cause repair failures 2019-12-19 07:53:48 -08:00
xfs_ialloc.h xfs: don't commit sunit/swidth updates to disk if that would cause repair failures 2019-12-19 07:53:48 -08:00
xfs_iext_tree.c xfs: fix inode fork extent count overflow 2019-10-21 09:04:58 -07:00
xfs_inode_buf.c xfs: don't reset the "inode core" in xfs_iread 2019-11-13 11:13:45 -08:00
xfs_inode_buf.h xfs: merge the projid fields in struct xfs_icdinode 2019-11-13 11:13:45 -08:00
xfs_inode_fork.c xfs: Remove kmem_zone_free() wrapper 2019-11-18 08:40:44 -08:00
xfs_inode_fork.h xfs: refactor "does this fork map blocks" predicate 2019-11-10 10:22:51 -08:00
xfs_log_format.h xfs: Correct comment tyops -> typos 2019-11-10 10:21:57 -08:00
xfs_log_recover.h xfs: remove unused typedef definitions 2019-11-13 18:22:40 -08:00
xfs_log_rlimit.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_quota_defs.h xfs: change some error-less functions to void types 2019-05-01 20:26:30 -07:00
xfs_refcount_btree.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_refcount_btree.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_refcount.c xfs: convert open coded corruption check to use XFS_IS_CORRUPT 2019-11-13 11:08:01 -08:00
xfs_refcount.h xfs: remove unnecessary int returns from deferred refcount functions 2019-08-28 08:31:02 -07:00
xfs_rmap_btree.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_rmap_btree.h xfs: pass transaction lock while setting up agresv on cyclic metadata 2018-07-29 22:37:08 -07:00
xfs_rmap.c xfs: convert open coded corruption check to use XFS_IS_CORRUPT 2019-11-13 11:08:01 -08:00
xfs_rmap.h xfs: reinitialize rm_flags when unpacking an offset into an rmap irec 2019-08-28 08:31:02 -07:00
xfs_rtbitmap.c xfs: convert open coded corruption check to use XFS_IS_CORRUPT 2019-11-13 11:08:01 -08:00
xfs_sb.c xfs: fix missing header includes 2019-11-07 13:00:53 -08:00
xfs_sb.h xfs: change some error-less functions to void types 2019-05-01 20:26:30 -07:00
xfs_shared.h xfs: remove all *_ITER_CONTINUE values 2019-08-30 22:43:56 -07:00
xfs_symlink_remote.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_trans_inode.c xfs: use a struct timespec64 for the in-core crtime 2019-11-13 11:13:45 -08:00
xfs_trans_resv.c xfs: fix log reservation overflows when allocating large rt extents 2019-12-17 11:19:28 -08:00
xfs_trans_resv.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_trans_space.h xfs: separate inode geometry 2019-06-12 08:37:40 -07:00
xfs_types.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_types.h xfs: remove unused structure members & simple typedefs 2019-11-13 18:22:41 -08:00