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OpenCloudOS-Kernel/fs/xfs
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Dave Chinner 3948659e30 xfs: Account log unmount transaction correctly 
There have been a few reports of this warning appearing recently:

XFS (dm-4): xlog_space_left: head behind tail
 tail_cycle = 129, tail_bytes = 20163072
 GH   cycle = 129, GH   bytes = 20162880

The common cause appears to be lots of freeze and unfreeze cycles,
and the output from the warnings indicates that we are leaking
around 8 bytes of log space per freeze/unfreeze cycle.

When we freeze the filesystem, we write an unmount record and that
uses xlog_write directly - a special type of transaction,
effectively. What it doesn't do, however, is correctly account for
the log space it uses. The unmount record writes an 8 byte structure
with a special magic number into the log, and the space this
consumes is not accounted for in the log ticket tracking the
operation. Hence we leak 8 bytes every unmount record that is
written.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
 		2012-03-26 17:47:24 -05:00
..
Kconfig quota: Make QUOTACTL config be selected by its users 2010-10-05 12:16:37 +02:00
Makefile xfs: use common code for quota statistics 2012-03-14 11:09:06 -05:00
kmem.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
kmem.h xfs: use a normal shrinker for the dquot freelist 2012-02-10 12:38:09 -06:00
mrlock.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
time.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
uuid.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
uuid.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs.h xfs: don't expect xfs headers to be in subdirectories 2011-08-12 13:57:55 -05:00
xfs_acl.c xfs: fix acl count validation in xfs_acl_from_disk() 2011-12-16 15:17:42 -06:00
xfs_acl.h xfs: Fix build breakage in xfs_iops.c when CONFIG_FS_POSIX_ACL is not set 2011-08-01 02:35:04 -04:00
xfs_ag.h xfs: Remove the macro XFS_BUF_PTR 2011-07-25 15:03:13 -05:00
xfs_alloc.c xfs: introduce an allocation workqueue 2012-03-22 16:12:24 -05:00
xfs_alloc.h xfs: introduce an allocation workqueue 2012-03-22 16:12:24 -05:00
xfs_alloc_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_alloc_btree.h
…
xfs_aops.c xfs: log file size updates at I/O completion time 2012-03-13 16:30:49 -05:00
xfs_aops.h xfs: log file size updates at I/O completion time 2012-03-13 16:30:49 -05:00
xfs_attr.c xfs: remove xfs_itruncate_data 2012-01-13 12:11:45 -06:00
xfs_attr.h xfs: convert attr to use unsigned names 2010-01-20 10:47:48 +11:00
xfs_attr_leaf.c xfs: remove the if_ext_max field in struct xfs_ifork 2012-01-17 15:02:28 -06:00
xfs_attr_leaf.h
…
xfs_attr_sf.h xfs: convert attr to use unsigned names 2010-01-20 10:47:48 +11:00
xfs_bit.c
…
xfs_bit.h
…
xfs_bmap.c xfs: fix deadlock in xfs_rtfree_extent 2012-03-22 15:31:06 -05:00
xfs_bmap.h xfs: cleanup xfs_bmap.h 2011-10-11 21:15:07 -05:00
xfs_bmap_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_bmap_btree.h xfs: make several more functions static 2010-01-15 15:31:38 -06:00
xfs_btree.c xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF 2011-10-11 21:15:09 -05:00
xfs_btree.h xfs: Remove the macro XFS_BUF_PTR 2011-07-25 15:03:13 -05:00
xfs_buf.c xfs: use per-filesystem I/O completion workqueues 2012-03-05 11:07:42 -06:00
xfs_buf.h xfs: remove unused XBT_FORCE_SLEEP bit 2011-12-16 15:12:33 -06:00
xfs_buf_item.c xfs: constify xfs_item_ops 2011-11-08 10:48:23 -06:00
xfs_buf_item.h xfs: use struct list_head for the buf cancel table 2010-12-16 16:05:22 -06:00
xfs_da_btree.c xfs: remove XFS_BUF_SET_VTYPE and XFS_BUF_SET_VTYPE_REF 2011-10-11 21:15:09 -05:00
xfs_da_btree.h xfs: remove the dead XFS_DABUF_DEBUG code 2011-07-13 13:43:50 +02:00
xfs_dfrag.c xfs: split in-core and on-disk inode log item fields 2012-03-13 17:08:17 -05:00
xfs_dfrag.h xfs: clean up inconsistent variable naming in xfs_swap_extent 2010-01-15 15:31:23 -06:00
xfs_dinode.h xfs: Remove the macro XFS_BUF_PTR 2011-07-25 15:03:13 -05:00
xfs_dir2.c xfs: get rid of open-coded S_ISREG(), etc. 2011-07-26 15:05:16 -04:00
xfs_dir2.h xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_block.c xfs: clean up minor sparse warnings 2012-03-14 13:21:17 -05:00
xfs_dir2_data.c xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_format.h xfs: cleanup struct xfs_dir2_free 2011-07-13 13:43:48 +02:00
xfs_dir2_leaf.c xfs: introduce xfs_bmapi_read() 2011-10-11 21:15:03 -05:00
xfs_dir2_node.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2011-07-25 13:56:39 -07:00
xfs_dir2_priv.h xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_dir2_sf.c xfs: reshuffle dir2 headers 2011-07-13 13:43:48 +02:00
xfs_discard.c xfs: fix endian conversion issue in discard code 2012-01-03 11:39:55 -06:00
xfs_discard.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_dquot.c fs: xfs: fix section mismatch in linux-next 2012-03-22 13:48:55 -05:00
xfs_dquot.h xfs: remove the per-filesystem list of dquots 2012-03-14 11:53:34 -05:00
xfs_dquot_item.c xfs: cleanup dquot locking helpers 2011-12-12 17:28:20 -06:00
xfs_dquot_item.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_error.c xfs: Convert remaining cmn_err() callers to new API 2011-03-07 10:08:35 +11:00
xfs_error.h xfs: kill support/debug.[ch] 2011-03-07 10:09:35 +11:00
xfs_export.c xfs: fix nfs export of 64-bit inodes numbers on 32-bit kernels 2011-12-06 10:46:23 -06:00
xfs_export.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_extfree_item.c xfs: constify xfs_item_ops 2011-11-08 10:48:23 -06:00
xfs_extfree_item.h xfs: Pull EFI/EFD handling out from under the AIL lock 2010-12-20 11:59:49 +11:00
xfs_file.c xfs: reimplement fdatasync support 2012-03-13 17:18:14 -05:00
xfs_filestream.c xfs: rename allocation range fields in struct xfs_bmalloca 2011-10-11 21:15:06 -05:00
xfs_filestream.h xfs: clean up filestreams helpers 2010-07-26 13:16:51 -05:00
xfs_fs.h xfs: consolidate & clarify mount sanity checks 2011-07-08 11:32:51 -05:00
xfs_fs_subr.c xfs: remove the i_size field in struct xfs_inode 2012-01-17 15:08:53 -06:00
xfs_fsops.c xfs: Check the return value of xfs_buf_get() 2011-10-11 21:15:01 -05:00
xfs_fsops.h xfs: ensure log covering transactions are synchronous 2011-01-11 20:28:17 -06:00
xfs_globals.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_ialloc.c xfs: propagate umode_t 2012-01-03 22:55:00 -05:00
xfs_ialloc.h xfs: propagate umode_t 2012-01-03 22:55:00 -05:00
xfs_ialloc_btree.c xfs: remove leftovers of the old btree tracing code 2011-07-13 13:43:50 +02:00
xfs_ialloc_btree.h
…
xfs_iget.c xfs: don't cache inodes read through bulkstat 2012-03-26 17:19:08 -05:00
xfs_inode.c xfs: split in-core and on-disk inode log item fields 2012-03-13 17:08:17 -05:00
xfs_inode.h xfs: don't cache inodes read through bulkstat 2012-03-26 17:19:08 -05:00
xfs_inode_item.c xfs: reimplement fdatasync support 2012-03-13 17:18:14 -05:00
xfs_inode_item.h xfs: reimplement fdatasync support 2012-03-13 17:18:14 -05:00
xfs_inum.h xfs: cleanup shortform directory inode number handling 2011-07-08 14:35:03 +02:00
xfs_ioctl.c xfs: Fix open flag handling in open_by_handle code 2012-03-22 15:56:52 -05:00
xfs_ioctl.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_ioctl32.c xfs: clean up minor sparse warnings 2012-03-14 13:21:17 -05:00
xfs_ioctl32.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_iomap.c xfs: log file size updates as part of unwritten extent conversion 2012-03-05 11:53:16 -06:00
xfs_iomap.h xfs: kill xfs_iomap 2010-12-16 16:05:51 -06:00
xfs_iops.c xfs: clean up minor sparse warnings 2012-03-14 13:21:17 -05:00
xfs_iops.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_itable.c xfs: don't cache inodes read through bulkstat 2012-03-26 17:19:08 -05:00
xfs_itable.h xfs: remove block number from inode lookup code 2010-06-24 11:35:17 +10:00
xfs_linux.h xfs: revert to using a kthread for AIL pushing 2011-10-11 11:02:49 -05:00
xfs_log.c xfs: Account log unmount transaction correctly 2012-03-26 17:47:24 -05:00
xfs_log.h xfs: split and cleanup xfs_log_reserve 2012-02-22 22:37:04 -06:00
xfs_log_cil.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2012-01-08 13:21:22 -08:00
xfs_log_priv.h xfs: split and cleanup xfs_log_reserve 2012-02-22 22:37:04 -06:00
xfs_log_recover.c xfs: add the xlog_grant_head structure 2012-02-22 22:19:53 -06:00
xfs_log_recover.h xfs: Clean up XFS_BLI_* flag namespace 2010-05-24 10:33:39 -05:00
xfs_message.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_message.h treewide: use __printf not __attribute__((format(printf,...))) 2011-10-31 17:30:54 -07:00
xfs_mount.c Change xfs_sb_from_disk() interface to take a mount pointer 2012-02-03 11:21:33 -06:00
xfs_mount.h xfs: use per-filesystem I/O completion workqueues 2012-03-05 11:07:42 -06:00
xfs_mru_cache.c xfs: convert to alloc_workqueue() 2011-02-01 11:42:43 +01:00
xfs_mru_cache.h xfs: Kill filestreams cache flush 2010-01-15 15:34:22 -06:00
xfs_qm.c xfs: remove the global xfs_Gqm structure 2012-03-14 12:06:32 -05:00
xfs_qm.h xfs: remove the global xfs_Gqm structure 2012-03-14 12:06:32 -05:00
xfs_qm_bhv.c xfs: remove the global xfs_Gqm structure 2012-03-14 12:06:32 -05:00
xfs_qm_syscalls.c xfs: remove the per-filesystem list of dquots 2012-03-14 11:53:34 -05:00
xfs_quota.h Define new macro XFS_ALL_QUOTA_ACTIVE and simply some usage 2012-02-03 11:32:20 -06:00
xfs_quota_priv.h xfs: use per-filesystem radix trees for dquot lookup 2012-03-14 11:09:06 -05:00
xfs_quotaops.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_rename.c xfs: simplify xfs_trans_ijoin* again 2011-10-11 21:15:08 -05:00
xfs_rtalloc.c xfs: fix deadlock in xfs_rtfree_extent 2012-03-22 15:31:06 -05:00
xfs_rtalloc.h xfs: Remove the macro XFS_BUF_PTR 2011-07-25 15:03:13 -05:00
xfs_rw.c xfs: clean up xfs_ioerror_alert 2011-10-11 21:15:10 -05:00
xfs_rw.h xfs: clean up xfs_ioerror_alert 2011-10-11 21:15:10 -05:00
xfs_sb.h xfs: kill the unused XFS_BB_FSB_OFFSET macro 2012-02-02 17:08:04 -06:00
xfs_stats.c xfs: use common code for quota statistics 2012-03-14 11:09:06 -05:00
xfs_stats.h xfs: use common code for quota statistics 2012-03-14 11:09:06 -05:00
xfs_super.c xfs: don't cache inodes read through bulkstat 2012-03-26 17:19:08 -05:00
xfs_super.h xfs: remove the global xfs_Gqm structure 2012-03-14 12:06:32 -05:00
xfs_sync.c xfs: log timestamp updates 2012-03-13 17:01:15 -05:00
xfs_sync.h xfs: log timestamp updates 2012-03-13 17:01:15 -05:00
xfs_sysctl.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_sysctl.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_trace.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_trace.h xfs: trace xfs_name strings correctly 2012-03-26 13:58:48 -05:00
xfs_trans.c xfs: split and cleanup xfs_log_reserve 2012-02-22 22:37:04 -06:00
xfs_trans.h xfs: remove the lid_size field in struct log_item_desc 2011-12-08 13:53:30 -06:00
xfs_trans_ail.c xfs: cleanup xfs_log_space_wake 2012-02-22 22:17:00 -06:00
xfs_trans_buf.c xfs: remove xfs_trans_unlocked_item 2012-02-22 22:17:00 -06:00
xfs_trans_dquot.c xfs: remove the global xfs_Gqm structure 2012-03-14 12:06:32 -05:00
xfs_trans_extfree.c xfs: Pull EFI/EFD handling out from under the AIL lock 2010-12-20 11:59:49 +11:00
xfs_trans_inode.c xfs: split in-core and on-disk inode log item fields 2012-03-13 17:08:17 -05:00
xfs_trans_priv.h xfs: remove xfs_trans_unlocked_item 2012-02-22 22:17:00 -06:00
xfs_trans_space.h
…
xfs_types.h xfs: exact busy extent tracking 2011-04-28 13:18:04 -05:00
xfs_utils.c xfs: propagate umode_t 2012-01-03 22:55:00 -05:00
xfs_utils.h xfs: propagate umode_t 2012-01-03 22:55:00 -05:00
xfs_vnode.h xfs: remove remaining scraps of struct xfs_iomap 2012-03-15 13:40:16 -05:00
xfs_vnodeops.c xfs: Fix missing xfs_iunlock() on error recovery path in xfs_readlink() 2012-01-25 11:01:31 -06:00
xfs_vnodeops.h xfs: remove remaining scraps of struct xfs_iomap 2012-03-15 13:40:16 -05:00
xfs_xattr.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00