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android_kernel_motorola_sm6375/fs/xfs
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Filename Latest commit message Latest commit date
[email protected] 24446fc66f xfs: xfs_bmap_add_extent_delay_real should init br_startblock 
When filling in the middle of a previous delayed allocation in
xfs_bmap_add_extent_delay_real, set br_startblock of the new delay
extent to the right to nullstartblock instead of 0 before inserting
the extent into the ifork (xfs_iext_insert), rather than setting
br_startblock afterward.

Adding the extent into the ifork with br_startblock=0 can lead to
the extent being copied into the btree by xfs_bmap_extent_to_btree
if we happen to convert from extents format to btree format before
updating br_startblock with the correct value.  The unexpected
addition of this delay extent to the btree can cause subsequent
XFS_WANT_CORRUPTED_GOTO filesystem shutdown in several
xfs_bmap_add_extent_delay_real cases where we are converting a delay
extent to real and unexpectedly find an extent already inserted.
For example:

911         case BMAP_LEFT_FILLING:
912                 /*
913                  * Filling in the first part of a previous delayed allocation.
914                  * The left neighbor is not contiguous.
915                  */
916                 trace_xfs_bmap_pre_update(ip, idx, state, _THIS_IP_);
917                 xfs_bmbt_set_startoff(ep, new_endoff);
918                 temp = PREV.br_blockcount - new->br_blockcount;
919                 xfs_bmbt_set_blockcount(ep, temp);
920                 xfs_iext_insert(ip, idx, 1, new, state);
921                 ip->i_df.if_lastex = idx;
922                 ip->i_d.di_nextents++;
923                 if (cur == NULL)
924                         rval = XFS_ILOG_CORE | XFS_ILOG_DEXT;
925                 else {
926                         rval = XFS_ILOG_CORE;
927                         if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff,
928                                         new->br_startblock, new->br_blockcount,
929                                         &i)))
930                                 goto done;
931                         XFS_WANT_CORRUPTED_GOTO(i == 0, done);

With the bogus extent in the btree we shutdown the filesystem at
931.  The conversion from extents to btree format happens when the
number of extents in the inode increases above ip->i_df.if_ext_max.
xfs_bmap_extent_to_btree copies extents from the ifork into the
btree, ignoring all delalloc extents which are denoted by
br_startblock having some value of nullstartblock.

SGI-PV: 1013221

Signed-off-by: Ben Myers <[email protected]>
Reviewed-by: Dave Chinner <[email protected]>
Signed-off-by: Alex Elder <[email protected]>
2011-01-28 09:13:29 -06:00
..
linux-2.6 xfs: limit extsize to size of AGs and/or MAXEXTLEN 2011-01-28 09:05:36 -06:00
quota xfs: fix dquot shaker deadlock 2011-01-28 09:05:36 -06:00
support xfs: Do not name variables "panic" 2011-01-17 12:39:07 -08:00
Kconfig quota: Make QUOTACTL config be selected by its users 2010-10-05 12:16:37 +02:00
Makefile xfs: add FITRIM support 2011-01-11 20:28:29 -06:00
xfs.h
xfs_acl.h fs: provide rcu-walk aware permission i_ops 2011-01-07 17:50:29 +11:00
xfs_ag.h xfs: convert pag_ici_lock to a spin lock 2010-12-16 17:08:41 +11:00
xfs_alloc.c xfs: add FITRIM support 2011-01-11 20:28:29 -06:00
xfs_alloc.h xfs: limit extent length for allocation to AG size 2011-01-28 09:05:35 -06:00
xfs_alloc_btree.c xfs: remove the ->kill_root btree operation 2010-10-18 15:07:38 -05:00
xfs_alloc_btree.h
xfs_arch.h
xfs_attr.c xfs: remove xfs_buf wrappers 2010-10-18 15:08:07 -05:00
xfs_attr.h
xfs_attr_leaf.c xfs: use KM_NOFS for allocations during attribute list operations 2010-12-23 11:57:37 +11:00
xfs_attr_leaf.h
xfs_attr_sf.h
xfs_bit.c
xfs_bit.h
xfs_bmap.c xfs: xfs_bmap_add_extent_delay_real should init br_startblock 2011-01-28 09:13:29 -06:00
xfs_bmap.h xfs: fix failed write truncation handling. 2010-12-01 07:40:19 -06:00
xfs_bmap_btree.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_bmap_btree.h
xfs_btree.c xfs: connect up buffer reclaim priority hooks 2010-12-02 16:31:13 +11:00
xfs_btree.h xfs: remove the ->kill_root btree operation 2010-10-18 15:07:38 -05:00
xfs_btree_trace.c
xfs_btree_trace.h
xfs_buf_item.c xfs: fix efi item leak on forced shutdown 2011-01-28 09:01:33 -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 wrappers 2010-10-18 15:08:07 -05:00
xfs_da_btree.h
xfs_dfrag.c xfs: delayed alloc blocks beyond EOF are valid after writeback 2010-12-01 07:40:20 -06:00
xfs_dfrag.h
xfs_dinode.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_dir2.c xfs: split xfs_itrace_entry 2010-07-26 13:16:44 -05:00
xfs_dir2.h
xfs_dir2_block.c xfs: fix gcc 4.6 set but not read and unused statement warnings 2010-07-26 13:16:51 -05:00
xfs_dir2_block.h
xfs_dir2_data.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_dir2_data.h
xfs_dir2_leaf.c xfs: remove xfs_buf wrappers 2010-10-18 15:08:07 -05:00
xfs_dir2_leaf.h
xfs_dir2_node.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_dir2_node.h
xfs_dir2_sf.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_dir2_sf.h
xfs_error.c xfs: prevent NMI timeouts in cmn_err 2011-01-12 08:46:41 -06:00
xfs_error.h xfs: prevent NMI timeouts in cmn_err 2011-01-12 08:46:41 -06:00
xfs_extfree_item.c xfs: fix efi item leak on forced shutdown 2011-01-28 09:01:33 -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_filestream.c xfs: tell lockdep about parent iolock usage in filestreams 2010-11-10 12:00:48 -06:00
xfs_filestream.h xfs: clean up filestreams helpers 2010-07-26 13:16:51 -05:00
xfs_fs.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_fsops.c xfs: ensure log covering transactions are synchronous 2011-01-11 20:28:17 -06:00
xfs_fsops.h xfs: ensure log covering transactions are synchronous 2011-01-11 20:28:17 -06:00
xfs_ialloc.c xfs: remove xfs_buf wrappers 2010-10-18 15:08:07 -05:00
xfs_ialloc.h
xfs_ialloc_btree.c xfs: remove the ->kill_root btree operation 2010-10-18 15:07:38 -05:00
xfs_ialloc_btree.h
xfs_iget.c Merge branch 'master' into for-linus-merged 2011-01-10 21:35:55 -06:00
xfs_inode.c xfs: connect up buffer reclaim priority hooks 2010-12-02 16:31:13 +11:00
xfs_inode.h xfs: don't truncate prealloc from frequently accessed inodes 2010-12-23 12:02:31 +11:00
xfs_inode_item.c xfs: remove all the inodes on a buffer from the AIL in bulk 2010-12-20 12:03:17 +11:00
xfs_inode_item.h xfs: simplify inode to transaction joining 2010-07-26 13:16:36 -05:00
xfs_inum.h
xfs_iomap.c xfs: speculative delayed allocation uses rounddown_power_of_2 badly 2011-01-28 09:05:35 -06:00
xfs_iomap.h xfs: kill xfs_iomap 2010-12-16 16:05:51 -06:00
xfs_itable.c xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_itable.h xfs: remove block number from inode lookup code 2010-06-24 11:35:17 +10:00
xfs_log.c xfs: prevent NMI timeouts in cmn_err 2011-01-12 08:46:41 -06:00
xfs_log.h xfs: handle CIl transaction commit failures correctly 2011-01-28 09:05:36 -06:00
xfs_log_cil.c xfs: handle CIl transaction commit failures correctly 2011-01-28 09:05:36 -06:00
xfs_log_priv.h xfs: convert grant head manipulations to lockless algorithm 2010-12-21 12:29:14 +11:00
xfs_log_recover.c xfs: prevent NMI timeouts in cmn_err 2011-01-12 08:46:41 -06:00
xfs_log_recover.h xfs: Clean up XFS_BLI_* flag namespace 2010-05-24 10:33:39 -05:00
xfs_mount.c xfs: convert pag_ici_lock to a spin lock 2010-12-16 17:08:41 +11:00
xfs_mount.h xfs: dynamic speculative EOF preallocation 2011-01-04 11:35:03 +11:00
xfs_mru_cache.c workqueue: convert cancel_rearming_delayed_work[queue]() users to cancel_delayed_work_sync() 2010-12-15 10:56:11 +01:00
xfs_mru_cache.h
xfs_quota.h xfs: fix a few compiler warnings with CONFIG_XFS_QUOTA=n 2010-11-10 12:00:48 -06:00
xfs_rename.c xfs: log timestamp changes to the source inode in rename 2010-12-09 17:07:02 -06:00
xfs_rtalloc.c xfs: use unhashed buffers for size checks 2010-10-18 15:07:50 -05:00
xfs_rtalloc.h xfs: be more explicit if RT mount fails due to config 2010-05-28 14:58:24 -05:00
xfs_rw.c xfs: remove unneeded #include statements 2010-07-26 13:16:33 -05:00
xfs_rw.h
xfs_sb.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_trans.c xfs: handle CIl transaction commit failures correctly 2011-01-28 09:05:36 -06:00
xfs_trans.h xfs: connect up buffer reclaim priority hooks 2010-12-02 16:31:13 +11:00
xfs_trans_ail.c xfs: use AIL bulk delete function to implement single delete 2010-12-20 12:36:15 +11:00
xfs_trans_buf.c xfs: remove xfs_buf wrappers 2010-10-18 15:08:07 -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: don't use vfs writeback for pure metadata modifications 2010-10-18 15:07:45 -05:00
xfs_trans_priv.h xfs: use AIL bulk delete function to implement single delete 2010-12-20 12:36:15 +11:00
xfs_trans_space.h
xfs_types.h xfs: Extend project quotas to support 32bit project ids 2010-10-18 15:08:08 -05:00
xfs_utils.c xfs: remove xfs_cred.h 2010-10-18 15:08:06 -05:00
xfs_utils.h xfs: remove xfs_cred.h 2010-10-18 15:08:06 -05:00
xfs_vnodeops.c xfs: don't truncate prealloc from frequently accessed inodes 2010-12-23 12:02:31 +11:00
xfs_vnodeops.h xfs: remove xfs_cred.h 2010-10-18 15:08:06 -05:00