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Dave Chinner cbb7baab28 xfs: separate buffer indexing from block map 
To support discontiguous buffers in the buffer cache, we need to
separate the cache index variables from the I/O map. While this is
currently a 1:1 mapping, discontiguous buffer support will break
this relationship.

However, for caching purposes, we can still treat them the same as a
contiguous buffer - the block number of the first block and the
length of the buffer - as that is still a unique representation.
Also, the only way we will ever access the discontiguous regions of
buffers is via bulding the complete buffer in the first place, so
using the initial block number and entire buffer length is a sane
way to index the buffers.

Add a block mapping vector construct to the xfs_buf and use it in
the places where we are doing IO instead of the current
b_bn/b_length variables.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
 		2012-07-01 14:50:04 -05:00
..
Kconfig
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Makefile xfs: move xfs_do_force_shutdown() and kill xfs_rw.c 2012-05-14 16:20:59 -05:00
kmem.c xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
kmem.h xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
mrlock.h
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time.h
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uuid.c
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uuid.h
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xfs.h
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xfs_acl.c xfs: fix acl count validation in xfs_acl_from_disk() 2011-12-16 15:17:42 -06:00
xfs_acl.h
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xfs_ag.h xfs: move busy extent handling to it's own file 2012-05-14 16:20:55 -05:00
xfs_alloc.c xfs: fix allocbt cursor leak in xfs_alloc_ag_vextent_near 2012-06-21 12:32:43 -05:00
xfs_alloc.h xfs: move busy extent handling to it's own file 2012-05-14 16:20:55 -05:00
xfs_alloc_btree.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_alloc_btree.h xfs: struct xfs_buf_log_format isn't variable sized. 2012-07-01 14:50:04 -05:00
xfs_aops.c xfs: m_maxioffset is redundant 2012-06-14 12:28:22 -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: move xfs_get_extsz_hint() and kill xfs_rw.h 2012-05-14 16:20:58 -05:00
xfs_attr.h
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xfs_attr_leaf.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_attr_leaf.h
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xfs_attr_sf.h
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xfs_bit.c
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xfs_bit.h
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xfs_bmap.c xfs: make largest supported offset less shouty 2012-06-14 12:28:24 -05:00
xfs_bmap.h xfs: move xfs_fsb_to_db to xfs_bmap.h 2012-05-14 16:20:57 -05:00
xfs_bmap_btree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_bmap_btree.h
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xfs_btree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_btree.h
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xfs_buf.c xfs: separate buffer indexing from block map 2012-07-01 14:50:04 -05:00
xfs_buf.h xfs: separate buffer indexing from block map 2012-07-01 14:50:04 -05:00
xfs_buf_item.c xfs: struct xfs_buf_log_format isn't variable sized. 2012-07-01 14:50:04 -05:00
xfs_buf_item.h xfs: struct xfs_buf_log_format isn't variable sized. 2012-07-01 14:50:04 -05:00
xfs_da_btree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_da_btree.h
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xfs_dfrag.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_dfrag.h
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xfs_dinode.h xfs: fix typo in comment of xfs_dinode_t. 2012-06-14 12:28:26 -05:00
xfs_dir2.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_dir2.h
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xfs_dir2_block.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_dir2_data.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_dir2_format.h
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xfs_dir2_leaf.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_dir2_node.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_dir2_priv.h
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xfs_dir2_sf.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_discard.c xfs: clean up busy extent naming 2012-05-14 16:20:56 -05:00
xfs_discard.h
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xfs_dquot.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_dquot.h xfs: on-stack delayed write buffer lists 2012-05-14 16:20:31 -05:00
xfs_dquot_item.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_dquot_item.h
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xfs_error.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_error.h
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xfs_export.c ->encode_fh() API change 2012-05-29 23:28:33 -04:00
xfs_export.h
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xfs_extent_busy.c xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extent_busy.h xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extfree_item.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_extfree_item.h
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xfs_file.c xfs: kill copy and paste segment checks in xfs_file_aio_read 2012-06-14 12:28:25 -05:00
xfs_filestream.c
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xfs_filestream.h
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xfs_fs.h
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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: make XBF_MAPPED the default behaviour 2012-05-14 16:21:03 -05:00
xfs_fsops.h
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xfs_globals.c
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xfs_ialloc.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_ialloc.h xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_ialloc_btree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_ialloc_btree.h
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xfs_iget.c xfs: fix memory reclaim deadlock on agi buffer 2012-05-21 10:45:44 -05:00
xfs_inode.c xfs: make largest supported offset less shouty 2012-06-14 12:28:24 -05:00
xfs_inode.h xfs: move xfs_get_extsz_hint() and kill xfs_rw.h 2012-05-14 16:20:58 -05:00
xfs_inode_item.c xfs: check for stale inode before acquiring iflock on push 2012-06-21 10:53:43 -05:00
xfs_inode_item.h xfs: pass shutdown method into xfs_trans_ail_delete_bulk 2012-05-14 16:20:33 -05:00
xfs_inum.h xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_ioctl.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_ioctl.h
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xfs_ioctl32.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_ioctl32.h
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xfs_iomap.c xfs: make largest supported offset less shouty 2012-06-14 12:28:24 -05:00
xfs_iomap.h
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xfs_iops.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_iops.h
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xfs_itable.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_itable.h
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xfs_linux.h
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xfs_log.c xfs: remove xlog_t typedef 2012-06-21 14:22:27 -05:00
xfs_log.h xfs: allow assigning the tail lsn with the AIL lock held 2012-05-14 16:20:26 -05:00
xfs_log_cil.c xfs: rename log structure to xlog 2012-06-21 13:49:39 -05:00
xfs_log_priv.h xfs: remove xlog_t typedef 2012-06-21 14:22:27 -05:00
xfs_log_recover.c xfs: remove xlog_t typedef 2012-06-21 14:22:27 -05:00
xfs_log_recover.h
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xfs_message.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_message.h treewide: use __printf not __attribute__((format(printf,...))) 2011-10-31 17:30:54 -07:00
xfs_mount.c xfs: m_maxioffset is redundant 2012-06-14 12:28:22 -05:00
xfs_mount.h xfs: rename log structure to xlog 2012-06-21 13:49:39 -05:00
xfs_mru_cache.c
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xfs_mru_cache.h
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xfs_qm.c xfs: make largest supported offset less shouty 2012-06-14 12:28:24 -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: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_qm_syscalls.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -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: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_rename.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_rtalloc.c xfs: move xfs_get_extsz_hint() and kill xfs_rw.h 2012-05-14 16:20:58 -05:00
xfs_rtalloc.h
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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: struct xfs_buf_log_format isn't variable sized. 2012-07-01 14:50:04 -05:00
xfs_super.h xfs: remove the global xfs_Gqm structure 2012-03-14 12:06:32 -05:00
xfs_sync.c xfs: shutdown xfs_sync_worker before the log 2012-06-21 13:41:04 -05:00
xfs_sync.h xfs: log timestamp updates 2012-03-13 17:01:15 -05:00
xfs_sysctl.c
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xfs_sysctl.h
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xfs_trace.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_trace.h xfs: rename log structure to xlog 2012-06-21 13:49:39 -05:00
xfs_trans.c xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
xfs_trans.h xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
xfs_trans_ail.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_trans_buf.c xfs: make XBF_MAPPED the default behaviour 2012-05-14 16:21:03 -05:00
xfs_trans_dquot.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_trans_extfree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_trans_inode.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_trans_priv.h xfs: pass shutdown method into xfs_trans_ail_delete_bulk 2012-05-14 16:20:33 -05:00
xfs_trans_space.h
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xfs_types.h xfs: struct xfs_buf_log_format isn't variable sized. 2012-07-01 14:50:04 -05:00
xfs_utils.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -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: make largest supported offset less shouty 2012-06-14 12:28:24 -05:00
xfs_vnodeops.h xfs: remove remaining scraps of struct xfs_iomap 2012-03-15 13:40:16 -05:00
xfs_xattr.c
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