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linux/fs/xfs
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Omar Sandoval 85fa2c7743 xfs: don't try redundant allocations in xfs_rtallocate_extent_near() 
xfs_rtallocate_extent_near() tries to find a free extent as close to a
target bitmap block given by bbno as possible, which may be before or
after bbno. Searching backwards has a complication: the realtime summary
accounts for free space _starting_ in a bitmap block, but not straddling
or ending in a bitmap block. So, when the negative search finds a free
extent in the realtime summary, in order to end up closer to the target,
it looks for the end of the free extent. For example, if bbno - 2 has a
free extent, then it will check bbno - 1, then bbno - 2. But then if
bbno - 3 has a free extent, it will check bbno - 1 again, then bbno - 2
again, and then bbno - 3. This results in a quadratic loop, which is
completely pointless since the repeated checks won't find anything new.

Fix it by remembering where we last checked up to and continue from
there. This also obviates the need for a check of the realtime summary.

Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2023-10-19 08:34:33 -07:00
..
libxfs
xfs: invert the realtime summary cache
2023-10-19 08:34:33 -07:00
scrub
xfs: simplify rt bitmap/summary block accessor functions
2023-10-19 08:33:42 -07:00
Kconfig
xfs: fix select in config XFS_ONLINE_SCRUB_STATS
2023-09-11 14:52:23 +05:30
kmem.c
mm: introduce memalloc_retry_wait()
2022-01-15 16:30:29 +02:00
kmem.h
xfs: remove kmem_zone typedef
2021-10-22 16:00:31 -07:00
Makefile
xfs: move the realtime summary file scrubber to a separate source file
2023-08-10 07:48:09 -07:00
mrlock.h
…
xfs_acl.c
xfs: convert to ctime accessor functions
2023-07-24 10:30:06 +02:00
xfs_acl.h
fs: port ->set_acl() to pass mnt_idmap
2023-01-19 09:24:27 +01:00
xfs_aops.c
New code for 6.6:
2023-08-30 12:34:12 -07:00
xfs_aops.h
…
xfs_attr_inactive.c
xfs: make inode unlinked bucket recovery work with quotacheck
2023-09-12 10:31:07 -07:00
xfs_attr_item.c
xfs: reserve less log space when recovering log intent items
2023-09-12 10:31:07 -07:00
xfs_attr_item.h
xfs: share xattr name and value buffers when logging xattr updates
2022-05-23 08:43:46 +10:00
xfs_attr_list.c
xfs: use XFS_IFORK_Q to determine the presence of an xattr fork
2022-07-09 15:17:21 -07:00
xfs_bio_io.c
fs/xfs: Use the enum req_op and blk_opf_t types
2022-07-14 12:14:33 -06:00
xfs_bmap_item.c
xfs: reserve less log space when recovering log intent items
2023-09-12 10:31:07 -07:00
xfs_bmap_item.h
xfs: rename _zone variables to _cache
2021-10-22 16:04:20 -07:00
xfs_bmap_util.c
xfs: create rt extent rounding helpers for realtime extent blocks
2023-10-17 16:26:25 -07:00
xfs_bmap_util.h
xfs: xfs_bmap_punch_delalloc_range() should take a byte range
2022-11-29 09:09:17 +11:00
xfs_buf_item_recover.c
xfs: verify buffer contents when we skip log replay
2023-04-12 15:49:23 +10:00
xfs_buf_item.c
xfs: buffer pins need to hold a buffer reference
2023-06-05 04:05:27 +10:00
xfs_buf_item.h
xfs: convert buffer log item flags to unsigned.
2022-04-21 10:46:40 +10:00
xfs_buf.c
New code for 6.6:
2023-08-30 12:34:12 -07:00
xfs_buf.h
xfs: allow scanning ranges of the buffer cache for live buffers
2023-08-10 07:48:03 -07:00
xfs_dahash_test.c
xfs: test the ascii case-insensitive hash
2023-04-11 19:05:05 -07:00
xfs_dahash_test.h
xfs: test dir/attr hash when loading module
2023-03-19 09:55:49 -07:00
xfs_dir2_readdir.c
xfs: rearrange the logic and remove the broken comment for xfs_dir2_isxx
2022-10-04 16:39:58 +11:00
xfs_discard.c
xfs: abort fstrim if kernel is suspending
2023-10-04 09:25:04 +11:00
xfs_discard.h
xfs: move log discard work to xfs_discard.c
2023-10-04 09:24:02 +11:00
xfs_dquot_item_recover.c
xfs: replace xfs_sb_version checks with feature flag checks
2021-08-19 10:07:12 -07:00
xfs_dquot_item.c
xfs: remove support for disabling quota accounting on a mounted file system
2021-08-06 11:05:36 -07:00
xfs_dquot_item.h
xfs: remove support for disabling quota accounting on a mounted file system
2021-08-06 11:05:36 -07:00
xfs_dquot.c
xfs: fix dqiterate thinko
2023-08-18 13:42:36 +05:30
xfs_dquot.h
xfs: remove warning counters from struct xfs_dquot_res
2022-05-11 17:12:09 +10:00
xfs_drain.c
xfs: minimize overhead of drain wakeups by using jump labels
2023-04-11 18:59:59 -07:00
xfs_drain.h
xfs: minimize overhead of drain wakeups by using jump labels
2023-04-11 18:59:59 -07:00
xfs_error.c
xfs: make kobj_type structures constant
2023-02-10 08:59:48 -08:00
xfs_error.h
xfs: allow setting full range of panic tags
2023-02-09 18:36:17 -08:00
xfs_export.c
xfs: fix reloading entire unlinked bucket lists
2023-09-24 18:12:13 -07:00
xfs_export.h
…
xfs_extent_busy.c
xfs: process free extents to busy list in FIFO order
2023-10-11 12:35:21 -07:00
xfs_extent_busy.h
xfs: reduce AGF hold times during fstrim operations
2023-10-04 09:24:52 +11:00
xfs_extfree_item.c
xfs: reserve less log space when recovering log intent items
2023-09-12 10:31:07 -07:00
xfs_extfree_item.h
xfs: refactor all the EFI/EFD log item sizeof logic
2022-10-31 08:58:20 -07:00
xfs_file.c
mm: remove enum page_entry_size
2023-08-24 16:20:30 -07:00
xfs_filestream.c
xfs: fix double xfs_perag_rele() in xfs_filestream_pick_ag()
2023-06-05 14:48:15 +10:00
xfs_filestream.h
xfs: pass perag to filestreams tracing
2023-02-13 09:14:56 +11:00
xfs_fsmap.c
xfs: convert do_div calls to xfs_rtb_to_rtx helper calls
2023-10-17 16:25:55 -07:00
xfs_fsmap.h
xfs: fix deadlock and streamline xfs_getfsmap performance
2020-10-07 08:40:29 -07:00
xfs_fsops.c
Minor cleanups for 6.5:
2023-07-09 09:50:42 -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: allow setting full range of panic tags
2023-02-09 18:36:17 -08:00
xfs_health.c
xfs: replace XFS_FORCED_SHUTDOWN with xfs_is_shutdown
2021-08-19 10:07:13 -07:00
xfs_icache.c
xfs: use i_prev_unlinked to distinguish inodes that are not on the unlinked list
2023-09-12 10:31:07 -07:00
xfs_icache.h
xfs: use per-mount cpumask to track nonempty percpu inodegc lists
2023-09-11 08:39:03 -07:00
xfs_icreate_item.c
xfs: fix potential log item leak
2022-05-04 11:45:11 +10:00
xfs_icreate_item.h
xfs: rename _zone variables to _cache
2021-10-22 16:04:20 -07:00
xfs_inode_item_recover.c
xfs: clean up "%Ld/%Lu" which doesn't meet C standard
2022-09-19 06:47:14 +10:00
xfs_inode_item.c
xfs: create a helper to compute leftovers of realtime extents
2023-10-17 16:24:22 -07:00
xfs_inode_item.h
xfs: fix AGF vs inode cluster buffer deadlock
2023-06-05 04:08:27 +10:00
xfs_inode.c
xfs: fix reloading entire unlinked bucket lists
2023-09-24 18:12:13 -07:00
xfs_inode.h
xfs: make inode unlinked bucket recovery work with quotacheck
2023-09-12 10:31:07 -07:00
xfs_ioctl32.c
fs: port i_{g,u}id_into_vfs{g,u}id() to mnt_idmap
2023-01-19 09:24:29 +01:00
xfs_ioctl32.h
xfs: remove unused xfs_ioctl32.h declarations
2022-01-18 10:18:36 -08:00
xfs_ioctl.c
xfs: create a helper to compute leftovers of realtime extents
2023-10-17 16:24:22 -07:00
xfs_ioctl.h
fs: port ->fileattr_set() to pass mnt_idmap
2023-01-19 09:24:27 +01:00
xfs_iomap.c
xfs: don't allocate into the data fork for an unshare request
2023-05-02 09:14:51 +10:00
xfs_iomap.h
xfs: use iomap_valid method to detect stale cached iomaps
2022-11-29 09:09:17 +11:00
xfs_iops.c
xfs: reinstate the old i_version counter as STATX_CHANGE_COOKIE
2023-10-12 10:17:03 +05:30
xfs_iops.h
fs: port ->setattr() to pass mnt_idmap
2023-01-19 09:24:02 +01:00
xfs_itable.c
xfs: fix reloading entire unlinked bucket lists
2023-09-24 18:12:13 -07:00
xfs_itable.h
fs: port i_{g,u}id_into_vfs{g,u}id() to mnt_idmap
2023-01-19 09:24:29 +01:00
xfs_iunlink_item.c
xfs: create traced helper to get extra perag references
2023-04-11 18:59:55 -07:00
xfs_iunlink_item.h
xfs: add in-memory iunlink log item
2022-07-14 11:47:42 +10:00
xfs_iwalk.c
xfs: create traced helper to get extra perag references
2023-04-11 18:59:55 -07:00
xfs_iwalk.h
xfs: Decouple XFS_IBULK flags from XFS_IWALK flags
2022-04-13 07:02:44 +00:00
xfs_linux.h
xfs: use shifting and masking when converting rt extents, if possible
2023-10-17 16:26:25 -07:00
xfs_log_cil.c
xfs: move log discard work to xfs_discard.c
2023-10-04 09:24:02 +11:00
xfs_log_priv.h
xfs: move log discard work to xfs_discard.c
2023-10-04 09:24:02 +11:00
xfs_log_recover.c
xfs: use roundup_pow_of_two instead of ffs during xlog_find_tail
2023-09-13 10:38:20 +05:30
xfs_log.c
xfs: fix log recovery when unknown rocompat bits are set
2023-09-12 10:31:07 -07:00
xfs_log.h
xfs: move CIL ordering to the logvec chain
2022-07-07 18:56:08 +10:00
xfs_message.c
Merge branch 'guilt/xfs-unsigned-flags-5.18' into xfs-5.19-for-next
2022-04-21 16:45:03 +10:00
xfs_message.h
xfs: implement per-mount warnings for scrub and shrink usage
2022-05-27 10:31:34 +10:00
xfs_mount.c
xfs: track usage statistics of online fsck
2023-08-10 07:48:07 -07:00
xfs_mount.h
xfs: invert the realtime summary cache
2023-10-19 08:34:33 -07:00
xfs_mru_cache.c
xfs: rename _zone variables to _cache
2021-10-22 16:04:20 -07:00
xfs_mru_cache.h
…
xfs_notify_failure.c
xfs: correct calculation for agend and blockcount
2023-10-12 10:11:56 +05:30
xfs_ondisk.h
xfs: use accessor functions for summary info words
2023-10-18 16:53:00 -07:00
xfs_pnfs.c
fs: port ->setattr() to pass mnt_idmap
2023-01-19 09:24:02 +01:00
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: replace xfs_sb_version checks with feature flag checks
2021-08-19 10:07:12 -07:00
xfs_qm_syscalls.c
xfs: introduce xfs_inodegc_push()
2022-06-23 13:34:38 -07:00
xfs_qm.c
xfs: fix reloading entire unlinked bucket lists
2023-09-24 18:12:13 -07:00
xfs_qm.h
xfs: remove quota warning limit from struct xfs_quota_limits
2022-05-11 17:12:09 +10:00
xfs_quota.h
xfs: queue inactivation immediately when quota is nearing enforcement
2021-08-09 10:52:18 -07:00
xfs_quotaops.c
xfs: don't set quota warning values
2022-05-11 17:12:09 +10:00
xfs_refcount_item.c
xfs: reserve less log space when recovering log intent items
2023-09-12 10:31:07 -07:00
xfs_refcount_item.h
xfs: rename _zone variables to _cache
2021-10-22 16:04:20 -07:00
xfs_reflink.c
xfs: use deferred frees for btree block freeing
2023-06-29 09:28:23 -07:00
xfs_reflink.h
xfs: pass perag to xfs_alloc_read_agf()
2022-07-07 19:07:40 +10:00
xfs_rmap_item.c
xfs: reserve less log space when recovering log intent items
2023-09-12 10:31:07 -07:00
xfs_rmap_item.h
xfs: rename _zone variables to _cache
2021-10-22 16:04:20 -07:00
xfs_rtalloc.c
xfs: don't try redundant allocations in xfs_rtallocate_extent_near()
2023-10-19 08:34:33 -07:00
xfs_rtalloc.h
xfs: convert rt extent numbers to xfs_rtxnum_t
2023-10-17 16:24:22 -07:00
xfs_stats.c
xfs: replace unnecessary seq_printf with seq_puts
2022-09-19 06:48:14 +10:00
xfs_stats.h
xfs: periodically relog deferred intent items
2020-10-07 08:40:28 -07:00
xfs_super.c
xfs: create a helper to convert rtextents to rtblocks
2023-10-17 16:24:22 -07:00
xfs_super.h
xfs: create scaffolding for creating debugfs entries
2023-08-10 07:48:07 -07:00
xfs_symlink.c
fs: port fs{g,u}id helpers to mnt_idmap
2023-01-19 09:24:30 +01:00
xfs_symlink.h
fs: port inode_init_owner() to mnt_idmap
2023-01-19 09:24:28 +01:00
xfs_sysctl.c
xfs: simplify two-level sysctl registration for xfs_table
2023-04-13 11:49:35 -07:00
xfs_sysctl.h
xfs: Add larp debug option
2022-05-11 17:01:22 +10:00
xfs_sysfs.c
xfs: make kobj_type structures constant
2023-02-10 08:59:48 -08:00
xfs_sysfs.h
xfs: make kobj_type structures constant
2023-02-10 08:59:48 -08:00
xfs_trace.c
xfs: add debug knob to slow down writeback for fun
2022-11-28 17:24:35 -08:00
xfs_trace.h
xfs: load uncached unlinked inodes into memory on demand
2023-09-12 10:31:07 -07:00
xfs_trans_ail.c
xfs: don't reverse order of items in bulk AIL insertion
2023-06-29 09:28:23 -07:00
xfs_trans_buf.c
xfs: introduce xfs_buf_daddr()
2021-08-19 10:07:14 -07:00
xfs_trans_dquot.c
xfs: remove quota warning limit from struct xfs_quota_limits
2022-05-11 17:12:09 +10:00
xfs_trans_priv.h
xfs: convert log vector chain to use list heads
2022-07-07 18:55:59 +10:00
xfs_trans.c
xfs: use shifting and masking when converting rt extents, if possible
2023-10-17 16:26:25 -07:00
xfs_trans.h
xfs: t_firstblock is tracking AGs not blocks
2023-02-11 04:11:06 +11:00
xfs_xattr.c
xfs: require a relatively recent V5 filesystem for LARP mode
2023-09-12 10:31:08 -07:00
xfs_xattr.h
xfs: move xfs_attr_use_log_assist usage out of libxfs
2022-05-27 10:34:04 +10:00
xfs.h
…