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0f9342513c
linux/fs/xfs
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Darrick J. Wong 0f9342513c xfs: check free AG space when making per-AG reservations 
The new online shrink code exposed a gap in the per-AG reservation
code, which is that we only return ENOSPC to callers if the entire fs
doesn't have enough free blocks.  Except for debugging mode, the
reservation init code doesn't ever check that there's enough free space
in that AG to cover the reservation.

Not having enough space is not considered an immediate fatal error that
requires filesystem offlining because (a) it's shouldn't be possible to
wind up in that state through normal file operations and (b) even if
one did, freeing data blocks would recover the situation.

However, online shrink now needs to know if shrinking would not leave
enough space so that it can abort the shrink operation.  Hence we need
to promote this assertion into an actual error return.

Observed by running xfs/168 with a 1k block size, though in theory this
could happen with any configuration.

Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com>
Reviewed-by: Gao Xiang <hsiangkao@linux.alibaba.com>
2021-05-24 18:01:04 -07:00
..
libxfs xfs: check free AG space when making per-AG reservations 2021-05-24 18:01:04 -07:00
scrub xfs: fix deadlock retry tracepoint arguments 2021-05-20 08:31:22 -07:00
Kconfig xfs: fix Kconfig asking about XFS_SUPPORT_V4 when XFS_FS=n 2020-10-16 15:34:28 -07:00
kmem.c xfs: remove kmem_realloc() 2020-09-06 18:05:51 -07:00
kmem.h xfs: Remove kmem_zalloc_large() 2020-09-15 20:52:41 -07:00
Makefile
mrlock.h
xfs_acl.c xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_acl.h fs: make helpers idmap mount aware 2021-01-24 14:27:20 +01:00
xfs_aops.c iomap: remove unused private field from ioend 2021-05-04 08:54:29 -07:00
xfs_aops.h
xfs_attr_inactive.c xfs: cleanup xfs_idestroy_fork 2020-05-19 09:40:59 -07:00
xfs_attr_list.c xfs: rename and simplify xfs_bmap_one_block 2021-04-15 09:35:50 -07:00
xfs_bio_io.c block: Add bio_max_segs 2021-02-26 15:49:51 -07:00
xfs_bmap_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_bmap_item.h
xfs_bmap_util.c xfs: retry allocations when locality-based search fails 2021-05-20 08:28:34 -07:00
xfs_bmap_util.h
xfs_buf_item_recover.c xfs: fix finobt btree block recovery ordering 2020-09-30 07:28:52 -07:00
xfs_buf_item.c xfs: optimise xfs_buf_item_size/format for contiguous regions 2021-03-25 16:47:51 -07:00
xfs_buf_item.h xfs: move the buffer retry logic to xfs_buf.c 2020-09-15 20:52:38 -07:00
xfs_buf.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_buf.h xfs: don't drain buffer lru on freeze and read-only remount 2021-01-22 16:54:50 -08:00
xfs_dir2_readdir.c xfs: remove XFS_IFINLINE 2021-04-15 09:35:51 -07:00
xfs_discard.c
xfs_discard.h
xfs_dquot_item_recover.c xfs: rename the ondisk dquot d_flags to d_type 2020-07-28 20:24:14 -07:00
xfs_dquot_item.c xfs: stop using q_core.d_id in the quota code 2020-07-28 20:24:14 -07:00
xfs_dquot_item.h
xfs_dquot.c xfs: move the XFS_IFEXTENTS check into xfs_iread_extents 2021-04-15 09:35:50 -07:00
xfs_dquot.h xfs: refactor default quota grace period setting code 2020-09-15 20:52:40 -07:00
xfs_error.c xfs: add error injection for per-AG resv failure 2021-03-25 16:47:53 -07:00
xfs_error.h
xfs_export.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_export.h
xfs_extent_busy.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_extent_busy.h treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_extfree_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_extfree_item.h
xfs_file.c xfs: move the di_flags2 field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_filestream.c xfs: drop the obsolete comment on filestream locking 2020-09-25 11:34:08 -07:00
xfs_filestream.h xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_fsmap.c xfs: drop freeze protection when running GETFSMAP 2021-03-24 10:36:05 -07:00
xfs_fsmap.h xfs: fix deadlock and streamline xfs_getfsmap performance 2020-10-07 08:40:29 -07:00
xfs_fsops.c xfs: remove obsolete AGF counter debugging 2021-04-29 07:44:18 -07:00
xfs_fsops.h xfs: get rid of xfs_growfs_{data,log}_t 2021-02-03 09:18:50 -08:00
xfs_globals.c xfs: consolidate the eofblocks and cowblocks workers 2021-02-03 09:18:49 -08:00
xfs_health.c
xfs_icache.c xfs: move the xfs_can_free_eofblocks call under the IOLOCK 2021-04-07 14:38:16 -07:00
xfs_icache.h xfs: rename block gc start and stop functions 2021-02-03 09:18:50 -08:00
xfs_icreate_item.c xfs: Remove kmem_zone_zalloc() usage 2020-07-28 20:24:14 -07:00
xfs_icreate_item.h
xfs_inode_item_recover.c xfs: rename struct xfs_legacy_ictimestamp 2021-04-22 18:29:25 -07:00
xfs_inode_item.c xfs: rename struct xfs_legacy_ictimestamp 2021-04-22 18:29:25 -07:00
xfs_inode_item.h xfs: move the buffer retry logic to xfs_buf.c 2020-09-15 20:52:38 -07:00
xfs_inode.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_inode.h xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_ioctl32.c xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_ioctl32.h xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_ioctl.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_ioctl.h xfs: convert to fileattr 2021-04-12 15:04:29 +02:00
xfs_iomap.c xfs: remove XFS_IFEXTENTS 2021-04-15 09:35:51 -07:00
xfs_iomap.h
xfs_iops.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_iops.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_itable.c xfs: move the di_crtime field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_itable.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_iwalk.c xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_iwalk.h
xfs_linux.h xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_log_cil.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_log_priv.h xfs: Modify xlog_ticket_alloc() to use kernel's MM API 2020-07-28 20:24:14 -07:00
xfs_log_recover.c xfs: remove the di_dmevmask and di_dmstate fields from struct xfs_icdinode 2021-04-07 14:37:03 -07:00
xfs_log.c xfs: don't allow log writes if the data device is readonly 2021-05-04 08:43:27 -07:00
xfs_log.h xfs: cover the log during log quiesce 2021-01-22 16:54:51 -08:00
xfs_message.c
xfs_message.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
xfs_mount.c xfs: set aside allocation btree blocks from block reservation 2021-04-29 07:45:44 -07:00
xfs_mount.h xfs: introduce in-core global counter of allocbt blocks 2021-04-29 07:45:44 -07:00
xfs_mru_cache.c xfs: set WQ_SYSFS on all workqueues in debug mode 2021-02-03 09:18:49 -08:00
xfs_mru_cache.h
xfs_ondisk.h xfs: rename struct xfs_legacy_ictimestamp 2021-04-22 18:29:25 -07:00
xfs_pnfs.c xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_pnfs.h
xfs_pwork.c xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_pwork.h xfs: increase the default parallelism levels of pwork clients 2021-02-03 09:18:49 -08:00
xfs_qm_bhv.c xfs: move the di_projid field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_qm_syscalls.c xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_qm.c xfs: move the XFS_IFEXTENTS check into xfs_iread_extents 2021-04-15 09:35:50 -07:00
xfs_qm.h xfs: refactor quota expiration timer modification 2020-09-15 20:52:40 -07:00
xfs_quota.h xfs: remove xfs_qm_vop_chown_reserve 2021-02-03 09:18:49 -08:00
xfs_quotaops.c xfs: move the di_nblocks field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_refcount_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_refcount_item.h
xfs_reflink.c xfs: fix xfs_reflink_unshare usage of filemap_write_and_wait_range 2021-04-29 07:45:44 -07:00
xfs_reflink.h xfs: move helpers that lock and unlock two inodes against userspace IO 2020-07-06 10:46:57 -07:00
xfs_rmap_item.c treewide: Change list_sort to use const pointers 2021-04-08 16:04:22 -07:00
xfs_rmap_item.h
xfs_rtalloc.c xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_rtalloc.h xfs: remove xfs_buf_t typedef 2020-12-16 16:07:34 -08:00
xfs_stats.c xfs: periodically relog deferred intent items 2020-10-07 08:40:28 -07:00
xfs_stats.h xfs: periodically relog deferred intent items 2020-10-07 08:40:28 -07:00
xfs_super.c xfs: move the di_flags field to struct xfs_inode 2021-04-07 14:37:05 -07:00
xfs_super.h xfs: remove xfs_quiesce_attr declaration 2021-04-16 08:28:36 -07:00
xfs_symlink.c New code for 5.13: 2021-04-29 10:43:51 -07:00
xfs_symlink.h xfs: support idmapped mounts 2021-01-24 14:43:46 +01:00
xfs_sysctl.c xfs: restore speculative_cow_prealloc_lifetime sysctl 2021-02-24 10:16:08 -08:00
xfs_sysctl.h xfs: consolidate the eofblocks and cowblocks workers 2021-02-03 09:18:49 -08:00
xfs_sysfs.c
xfs_sysfs.h xfs: Fix UBSAN null-ptr-deref in xfs_sysfs_init 2020-08-07 11:50:17 -07:00
xfs_trace.c xfs: add a tracepoint for blockgc scans 2021-02-03 09:18:49 -08:00
xfs_trace.h xfs: move the di_size field to struct xfs_inode 2021-04-07 14:37:03 -07:00
xfs_trans_ail.c xfs: delete duplicated words + other fixes 2020-08-05 08:49:58 -07:00
xfs_trans_buf.c xfs: remove xfs_buf_t typedef 2020-12-16 16:07:34 -08:00
xfs_trans_dquot.c xfs: shut down the filesystem if we screw up quota reservation 2021-02-03 09:18:49 -08:00
xfs_trans_priv.h
xfs_trans.c xfs: update superblock counters correctly for !lazysbcount 2021-04-29 07:44:18 -07:00
xfs_trans.h xfs: remove obsolete AGF counter debugging 2021-04-29 07:44:18 -07:00
xfs_xattr.c xfs: prevent metadata files from being inactivated 2021-03-25 16:47:50 -07:00
xfs.h