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3c14874acc
linux/fs/btrfs
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Josef Bacik 3c14874acc Btrfs: exclude super blocks when we read in block groups 
This has been resulting in a BUT_ON(ret) after btrfs_reserve_extent in
btrfs_cow_file_range.  The reason is we don't actually calculate the bytes_super
for a block group until we go to cache it, which means that the space_info can
hand out reservations for space that it doesn't actually have, and we can run
out of data space.  This is also a problem if you are using space caching since
we don't ever calculate bytes_super for the block groups.  So instead everytime
we read a block group call exclude_super_stripes, which calculates the
bytes_super for the block group so it can be left out of the space_info.  Then
whenever caching completes we just call free_excluded_extents so that the super
excluded extents are freed up.  Also if we are unmounting and we hit any block
groups that haven't been cached we still need to call free_excluded_extents to
make sure things are cleaned up properly.  Thanks,

Reported-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
2011-02-06 07:17:44 -05:00
..
acl.c Merge branch 'bug-fixes' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-28 16:24:59 -05:00
async-thread.c Btrfs: don't walk around with task->state != TASK_RUNNING 2010-05-25 10:34:58 -04:00
async-thread.h Btrfs: fix deadlock on async thread startup 2009-10-05 09:44:45 -04:00
btrfs_inode.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
compat.h Btrfs: drop remaining LINUX_KERNEL_VERSION checks and compat code 2009-01-06 09:38:55 -05:00
compression.c btrfs: fix uncheck memory allocation in btrfs_submit_compressed_read 2011-01-28 16:40:36 -05:00
compression.h btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00
ctree.c btrfs: check NULL or not 2011-01-16 11:30:20 -05:00
ctree.h Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
delayed-ref.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
delayed-ref.h Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
dir-item.c Btrfs: Fix variables set but not read (bugs found by gcc 4.6) 2010-10-29 15:14:31 -04:00
disk-io.c btrfs: fix return value check of btrfs_join_transaction() 2011-01-28 16:40:37 -05:00
disk-io.h Btrfs: forced readonly mounts on errors 2011-01-17 15:13:08 -05:00
export.c btrfs: fix several uncheck memory allocations 2011-01-28 16:40:36 -05:00
export.h NFS support for btrfs - v3 2008-09-25 11:04:06 -04:00
extent_io.c btrfs: checking NULL or not in some functions 2011-02-01 07:16:37 -05:00
extent_io.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
extent_map.c btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
extent_map.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
extent-tree.c Btrfs: exclude super blocks when we read in block groups 2011-02-06 07:17:44 -05:00
file-item.c Btrfs: do error checking in btrfs_del_csums 2011-01-28 16:42:34 -05:00
file.c Btrfs: handle no memory properly in prepare_pages 2011-01-28 16:42:34 -05:00
free-space-cache.c Btrfs: make sure search_bitmap finds something in remove_from_bitmap 2011-02-06 07:13:12 -05:00
free-space-cache.h Btrfs: load free space cache if it exists 2010-10-29 09:26:35 -04:00
hash.h Btrfs: remove crc32c.h and use libcrc32c directly. 2009-06-10 11:29:53 -04:00
inode-item.c Btrfs: Integrate metadata reservation with start_transaction 2010-05-25 10:34:50 -04:00
inode-map.c Btrfs: do not reuse objectid of deleted snapshot/subvol 2009-09-21 15:56:00 -04:00
inode.c btrfs: fix return value check of btrfs_start_transaction() 2011-02-01 07:17:27 -05:00
ioctl.c btrfs: fix return value check of btrfs_start_transaction() 2011-02-01 07:17:27 -05:00
ioctl.h Merge branch 'lzo-support' of git://repo.or.cz/linux-btrfs-devel into btrfs-38 2011-01-16 11:25:54 -05:00
Kconfig btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
locking.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
locking.h Btrfs: fix spinlock assertions on UP systems 2009-03-09 11:45:38 -04:00
lzo.c btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00
Makefile btrfs: Add lzo compression support 2010-12-22 23:15:47 +08:00
ordered-data.c Btrfs: avoid uninit variable warnings in ordered-data.c 2011-01-31 20:33:37 -05:00
ordered-data.h btrfs: Allow to add new compression algorithm 2010-12-22 23:15:45 +08:00
orphan.c Btrfs: fixup return code for btrfs_del_orphan_item 2010-12-09 13:57:15 -05:00
print-tree.c btrfs: fix missing break in switch phrase 2011-01-28 16:40:37 -05:00
print-tree.h Btrfs: Create extent_buffer interface for large blocksizes 2008-09-25 11:03:56 -04:00
ref-cache.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ref-cache.h Btrfs: use RB_ROOT to intialize rb_trees instead of setting rb_node to NULL 2010-03-08 16:26:50 -05:00
relocation.c btrfs: fix return value check of btrfs_start_transaction() 2011-02-01 07:17:27 -05:00
root-tree.c Btrfs: cleanup warnings from gcc 4.6 (nonbugs) 2010-10-29 15:14:37 -04:00
struct-funcs.c Btrfs: Fix checkpatch.pl warnings 2009-01-05 21:25:51 -05:00
super.c btrfs: fix return value check of btrfs_start_transaction() 2011-02-01 07:17:27 -05:00
sysfs.c Driver core: Constify struct sysfs_ops in struct kobj_type 2010-03-07 17:04:49 -08:00
transaction.c btrfs: fix return value check of btrfs_join_transaction() 2011-01-28 16:40:37 -05:00
transaction.h Btrfs: Add readonly snapshots support 2010-12-23 08:49:17 +08:00
tree-defrag.c Btrfs: cleanup warnings from gcc 4.6 (nonbugs) 2010-10-29 15:14:37 -04:00
tree-log.c btrfs: fix return value check of btrfs_start_transaction() 2011-02-01 07:17:27 -05:00
tree-log.h Btrfs: Metadata ENOSPC handling for tree log 2010-05-25 10:34:53 -04:00
version.h Update Btrfs files for in-kernel usage 2008-09-25 15:41:59 -04:00
version.sh Btrfs: Fixes for 2.6.28-rc API changes 2008-11-19 21:17:22 -05:00
volumes.c btrfs: fix return value check of btrfs_start_transaction() 2011-02-01 07:17:27 -05:00
volumes.h btrfs: fix wrong free space information of btrfs 2011-01-16 11:30:19 -05:00
xattr.c Btrfs: Add readonly snapshots support 2010-12-23 08:49:17 +08:00
xattr.h btrfs: constify xattr_handler 2010-05-21 18:31:18 -04:00
zlib.c btrfs: Extract duplicate decompress code 2010-12-22 23:15:50 +08:00