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linux/fs/xfs
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Darrick J. Wong 90e2056d76 xfs: try other AGs to allocate a BMBT block 
Prior to the introduction of reflink, allocating a block and mapping
it into a file was performed in a single transaction with a single
block reservation, and the allocator was supposed to find enough
blocks to allocate the extent and any BMBT blocks that might be
necessary (unless we're low on space).

However, due to the way copy on write works, allocation and mapping
have been split into two transactions, which means that we must be
able to handle the case where we allocate an extent for CoW but that
AG runs out of free space before the blocks can be mapped into a file,
and the mapping requires a new BMBT block.  When this happens, look in
one of the other AGs for a BMBT block instead of taking the FS down.

The same applies to the functions that convert a data fork to extents
and later btree format.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
2016-10-05 16:26:28 -07:00
..
libxfs xfs: try other AGs to allocate a BMBT block 2016-10-05 16:26:28 -07:00
Kconfig xfs: implement iomap based buffered write path 2016-06-21 09:53:44 +10:00
kmem.c xfs: improve kmem_realloc 2016-04-06 09:47:01 +10:00
kmem.h xfs: improve kmem_realloc 2016-04-06 09:47:01 +10:00
Makefile xfs: introduce the CoW fork 2016-10-04 18:06:40 -07:00
mrlock.h
uuid.c
uuid.h
xfs.h
xfs_acl.c posix_acl: Inode acl caching fixes 2016-03-31 00:30:15 -04:00
xfs_acl.h xfs: Change how listxattr generates synthetic attributes 2015-12-06 21:34:16 -05:00
xfs_aops.c xfs: implement CoW for directio writes 2016-10-05 16:26:04 -07:00
xfs_aops.h xfs: allocate delayed extents in CoW fork 2016-10-04 18:06:41 -07:00
xfs_attr.h xfs: remove put_value from attr ->put_listent context 2016-04-06 07:57:45 +10:00
xfs_attr_inactive.c xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_attr_list.c xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_bmap_item.c xfs: when replaying bmap operations, don't let unlinked inodes get reaped 2016-10-04 11:05:44 -07:00
xfs_bmap_item.h xfs: log bmap intent items 2016-10-04 11:05:44 -07:00
xfs_bmap_util.c xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_bmap_util.h xfs: change xfs_bmap_{finish,cancel,init,free} -> xfs_defer_* 2016-08-03 11:18:10 +10:00
xfs_buf.c xfs: prevent dropping ioend completions during buftarg wait 2016-08-26 16:01:59 +10:00
xfs_buf.h xfs: track and serialize in-flight async buffers against unmount 2016-07-20 11:15:28 +10:00
xfs_buf_item.c xfs: normalize "infinite" retries in error configs 2016-09-14 07:51:30 +10:00
xfs_buf_item.h
xfs_dir2_readdir.c xfs: return an error when an inline directory is too small 2016-10-03 09:11:15 -07:00
xfs_discard.c xfs: rmap btree requires more reserved free space 2016-08-03 11:38:24 +10:00
xfs_discard.h
xfs_dquot.c xfs: rename flist/free_list to dfops 2016-08-03 11:19:29 +10:00
xfs_dquot.h
xfs_dquot_item.c xfs: allocate log vector buffers outside CIL context lock 2016-07-22 09:52:35 +10:00
xfs_dquot_item.h
xfs_error.c Merge branch 'xfs-4.8-misc-fixes-3' into for-next 2016-07-20 11:51:08 +10:00
xfs_error.h xfs: implement deferred bmbt map/unmap operations 2016-10-04 11:05:44 -07:00
xfs_export.c xfs: abstract block export operations from nfsd layouts 2016-07-15 15:31:29 -04:00
xfs_export.h
xfs_extent_busy.c xfs: remote attribute blocks aren't really userdata 2016-09-26 08:21:28 +10:00
xfs_extent_busy.h
xfs_extfree_item.c xfs: remove unnecessary parentheses from log redo item recovery functions 2016-08-03 12:29:32 +10:00
xfs_extfree_item.h xfs: refactor redo intent item processing 2016-08-03 11:23:49 +10:00
xfs_file.c xfs: unshare a range of blocks via fallocate 2016-10-05 16:26:26 -07:00
xfs_filestream.c Merge branch 'xfs-4.9-log-recovery-fixes' into for-next 2016-10-03 09:56:28 +11:00
xfs_filestream.h
xfs_fsops.c xfs: preallocate blocks for worst-case btree expansion 2016-10-05 16:26:27 -07:00
xfs_fsops.h xfs: preallocate blocks for worst-case btree expansion 2016-10-05 16:26:27 -07:00
xfs_globals.c
xfs_icache.c xfs: introduce the CoW fork 2016-10-04 18:06:40 -07:00
xfs_icache.h xfs: cancel eofblocks background trimming on remount read-only 2016-06-21 11:53:28 +10:00
xfs_icreate_item.c
xfs_icreate_item.h
xfs_inode.c xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_inode.h xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_inode_item.c xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_inode_item.h xfs: remove timestamps from incore inode 2016-02-09 16:54:58 +11:00
xfs_ioctl.c xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_ioctl.h xfs: don't pass ioflags around in the ioctl path 2016-07-20 11:29:35 +10:00
xfs_ioctl32.c xfs: don't pass ioflags around in the ioctl path 2016-07-20 11:29:35 +10:00
xfs_ioctl32.h
xfs_iomap.c xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_iomap.h xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_iops.c xfs: (re-)implement FIEMAP_FLAG_XATTR 2016-08-17 08:45:30 +10:00
xfs_iops.h
xfs_itable.c xfs: create a separate cow extent size hint for the allocator 2016-10-05 16:26:26 -07:00
xfs_itable.h
xfs_linux.h xfs: remove __arch_pack 2016-07-20 11:48:46 +10:00
xfs_log.c Merge branch 'xfs-4.8-buf-fixes' into for-next 2016-07-20 11:53:35 +10:00
xfs_log.h xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_log_cil.c xfs: allocate log vector buffers outside CIL context lock 2016-07-22 09:52:35 +10:00
xfs_log_priv.h xfs: rework log recovery to submit buffers on LSN boundaries 2016-09-26 08:22:16 +10:00
xfs_log_recover.c xfs: when replaying bmap operations, don't let unlinked inodes get reaped 2016-10-04 11:05:44 -07:00
xfs_message.c xfs: more info from kmem deadlocks and high-level error msgs 2015-10-12 16:04:45 +11:00
xfs_message.h
xfs_mount.c xfs: preallocate blocks for worst-case btree expansion 2016-10-05 16:26:27 -07:00
xfs_mount.h xfs: define the on-disk refcount btree format 2016-10-03 09:11:18 -07:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_ondisk.h xfs: define the on-disk refcount btree format 2016-10-03 09:11:18 -07:00
xfs_pnfs.c xfs: introduce refcount btree definitions 2016-10-03 09:11:16 -07:00
xfs_pnfs.h xfs: abstract block export operations from nfsd layouts 2016-07-15 15:31:29 -04:00
xfs_qm.c xfs: better xfs_trans_alloc interface 2016-04-06 09:19:55 +10:00
xfs_qm.h xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_qm_bhv.c
xfs_qm_syscalls.c xfs: better xfs_trans_alloc interface 2016-04-06 09:19:55 +10:00
xfs_quota.h
xfs_quotaops.c xfs: wire up Q_XGETNEXTQUOTA / get_nextdqblk 2016-02-08 11:27:38 +11:00
xfs_refcount_item.c xfs: store in-progress CoW allocations in the refcount btree 2016-10-05 16:26:05 -07:00
xfs_refcount_item.h xfs: log refcount intent items 2016-10-03 09:11:21 -07:00
xfs_reflink.c xfs: don't allow reflink when the AG is low on space 2016-10-05 16:26:27 -07:00
xfs_reflink.h xfs: unshare a range of blocks via fallocate 2016-10-05 16:26:26 -07:00
xfs_rmap_item.c xfs: convert RUI log formats to use variable length arrays 2016-09-19 10:24:27 +10:00
xfs_rmap_item.h xfs: convert RUI log formats to use variable length arrays 2016-09-19 10:24:27 +10:00
xfs_rtalloc.c xfs: rename flist/free_list to dfops 2016-08-03 11:19:29 +10:00
xfs_rtalloc.h xfs: make several functions static 2016-06-01 17:38:15 +10:00
xfs_stats.c xfs: introduce refcount btree definitions 2016-10-03 09:11:16 -07:00
xfs_stats.h xfs: introduce refcount btree definitions 2016-10-03 09:11:16 -07:00
xfs_super.c xfs: preallocate blocks for worst-case btree expansion 2016-10-05 16:26:27 -07:00
xfs_super.h xfs: quiesce the filesystem after recovery on readonly mount 2016-09-26 08:21:44 +10:00
xfs_symlink.c xfs: rename flist/free_list to dfops 2016-08-03 11:19:29 +10:00
xfs_symlink.h
xfs_sysctl.c
xfs_sysctl.h
xfs_sysfs.c xfs: normalize "infinite" retries in error configs 2016-09-14 07:51:30 +10:00
xfs_sysfs.h xfs: configurable error behavior via sysfs 2016-05-18 10:58:51 +10:00
xfs_trace.c xfs: rework xfs_bmap_free callers to use xfs_defer_ops 2016-08-03 11:15:38 +10:00
xfs_trace.h xfs: store in-progress CoW allocations in the refcount btree 2016-10-05 16:26:05 -07:00
xfs_trans.c Merge branch 'xfs-4.9-reflink-prep' into for-next 2016-10-03 09:52:31 +11:00
xfs_trans.h xfs: implement deferred bmbt map/unmap operations 2016-10-04 11:05:44 -07:00
xfs_trans_ail.c xfs: Make xfsaild freezeable again 2016-02-08 14:59:07 +11:00
xfs_trans_bmap.c xfs: implement deferred bmbt map/unmap operations 2016-10-04 11:05:44 -07:00
xfs_trans_buf.c xfs: remove XBF_STALE flag wrapper macros 2016-02-10 15:01:11 +11:00
xfs_trans_dquot.c xfs: Split default quota limits by quota type 2016-02-08 11:27:55 +11:00
xfs_trans_extfree.c xfs: set up per-AG free space reservations 2016-09-19 10:30:52 +10:00
xfs_trans_inode.c xfs: move di_changecount to VFS inode 2016-02-09 16:54:58 +11:00
xfs_trans_priv.h
xfs_trans_refcount.c xfs: connect refcount adjust functions to upper layers 2016-10-03 09:11:22 -07:00
xfs_trans_rmap.c xfs: collapse single use static functions 2016-08-03 12:30:31 +10:00
xfs_xattr.c Make __xfs_xattr_put_listen preperly report errors. 2016-09-14 07:40:35 +10:00