Zach Brown f276795627 btrfs: fix btrfs_cont_expand() freeing IS_ERR em ...

btrfs_cont_expand() tries to free an IS_ERR em as it gets an error from
btrfs_get_extent() and breaks out of its loop.

An instance of -EEXIST was reported in the wild:

  https://bugzilla.redhat.com/show_bug.cgi?id=874407

I have no idea if that -EEXIST is surprising, or not.  Regardless, this
error handling should be cleaned up to handle other reasonable errors
(ENOMEM, EIO; whatever).

This seemed to be the only buggy freeing of the relatively rare IS_ERR
em so I opted to fix the caller rather than teach free_extent_map() to
use IS_ERR_OR_NULL().

Signed-off-by: Zach Brown <zab@redhat.com>
Reviewed-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>

2013-01-14 13:53:23 -05:00

..

acl.c

Btrfs: skip adding an acl attribute if we don't have to

2012-12-16 20:46:15 -05:00

async-thread.c

Btrfs: call the ordered free operation without any locks held

2012-07-25 16:15:07 -04:00

async-thread.h

btrfs: return void in functions without error conditions

2012-03-22 01:45:34 +01:00

backref.c

Btrfs: merge inode_list in __merge_refs

2012-12-12 17:15:27 -05:00

backref.h

Btrfs: extended inode refs support for send mechanism

2012-10-25 15:45:16 -04:00

btrfs_inode.h

Btrfs: inline csums if we're fsyncing

2012-12-16 20:46:22 -05:00

check-integrity.c

Btrfs: fix race in check-integrity caused by usage of bitfield

2012-12-16 20:46:13 -05:00

check-integrity.h

Btrfs: add optional integrity check code

2011-12-21 19:14:09 +01:00

compat.h

…

compression.c

Btrfs: handle errors from btrfs_map_bio() everywhere

2012-12-12 17:15:40 -05:00

compression.h

btrfs: return void in functions without error conditions

2012-03-22 01:45:34 +01:00

ctree.c

Revert "Btrfs: reorder tree mod log operations in deleting a pointer"

2012-12-18 19:35:32 -05:00

ctree.h

Btrfs: fix hash overflow handling

2012-12-17 14:48:21 -05:00

delayed-inode.c

Btrfs: cleanup for btrfs_btree_balance_dirty

2012-12-12 17:15:28 -05:00

delayed-inode.h

Btrfs: flush delayed inodes if we're short on space

2012-07-23 15:41:40 -04:00

delayed-ref.c

Btrfs: allow delayed refs to be merged

2012-08-28 16:53:38 -04:00

delayed-ref.h

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2012-10-01 09:06:36 -07:00

dev-replace.c

Btrfs: add new sources for device replace code

2012-12-12 17:15:41 -05:00

dev-replace.h

Btrfs: add new sources for device replace code

2012-12-12 17:15:41 -05:00

dir-item.c

Btrfs: fix hash overflow handling

2012-12-17 14:48:21 -05:00

disk-io.c

Btrfs: only clear dirty on the buffer if it is marked as dirty

2012-12-16 20:46:25 -05:00

disk-io.h

Btrfs: cleanup for btrfs_btree_balance_dirty

2012-12-12 17:15:28 -05:00

export.c

->encode_fh() API change

2012-05-29 23:28:33 -04:00

export.h

…

extent_io.c

Btrfs: handle errors from btrfs_map_bio() everywhere

2012-12-12 17:15:40 -05:00

extent_io.h

Btrfs: pass fs_info to btrfs_map_block() instead of mapping_tree

2012-12-12 17:15:34 -05:00

extent_map.c

Btrfs: log changed inodes based on the extent map tree

2012-12-16 20:46:24 -05:00

extent_map.h

Btrfs: do not mark ems as prealloc if we are writing to them

2012-12-16 20:46:23 -05:00

extent-tree.c

Btrfs: reset path lock state to zero

2013-01-14 13:52:53 -05:00

file-item.c

Btrfs: fix wrong file extent length

2012-12-12 17:15:21 -05:00

file.c

Btrfs: fix a bug when llseek for delalloc bytes behind prealloc extents

2013-01-14 13:53:22 -05:00

free-space-cache.c

Btrfs: use ctl->unit for free space calculation instead of block_group->sectorsize

2012-12-16 20:46:17 -05:00

free-space-cache.h

btrfs: remove all unused functions

2011-05-06 12:34:03 +02:00

hash.h

btrfs: extended inode refs

2012-10-09 09:14:45 -04:00

inode-item.c

btrfs: extended inode refs

2012-10-09 09:14:45 -04:00

inode-map.c

Btrfs: improve the noflush reservation

2012-12-11 13:31:31 -05:00

inode-map.h

Btrfs: Support reading/writing on disk free ino cache

2011-04-25 16:46:11 +08:00

inode.c

btrfs: fix btrfs_cont_expand() freeing IS_ERR em

2013-01-14 13:53:23 -05:00

ioctl.c

Btrfs: fix missing write access release in btrfs_ioctl_resize()

2013-01-14 13:52:51 -05:00

ioctl.h

Btrfs: add support for device replace ioctls

2012-12-16 20:46:06 -05:00

Kconfig

Btrfs: add config option to enable btrfs integrity check

2011-12-21 19:14:16 +01:00

locking.c

Btrfs: fix a misplaced address operator in a condition

2012-08-28 16:53:23 -04:00

locking.h

btrfs: return void in functions without error conditions

2012-03-22 01:45:34 +01:00

lzo.c

btrfs: remove the second argument of k[un]map_atomic()

2012-03-20 21:48:21 +08:00

Makefile

Btrfs: add new sources for device replace code

2012-12-12 17:15:41 -05:00

math.h

Btrfs: cleanup duplicated division functions

2012-12-11 13:31:30 -05:00

ordered-data.c

Btrfs: cleanup for btrfs_wait_order_range

2012-12-12 17:15:19 -05:00

ordered-data.h

Btrfs: make ordered extent be flushed by multi-task

2012-12-11 13:31:38 -05:00

orphan.c

btrfs: replace many BUG_ONs with proper error handling

2012-03-22 11:52:54 +01:00

print-tree.c

Btrfs: introduce a btrfs_dev_replace_item type

2012-12-12 17:15:38 -05:00

print-tree.h

…

qgroup.c

Btrfs: fix memory leak in btrfs_quota_enable()

2012-10-25 15:45:43 -04:00

rcu-string.h

Btrfs: use rcu to protect device->name

2012-06-14 21:29:16 -04:00

reada.c

Btrfs: introduce GET_READ_MIRRORS functionality for btrfs_map_block()

2012-12-12 17:15:43 -05:00

relocation.c

Btrfs: cleanup for btrfs_btree_balance_dirty

2012-12-12 17:15:28 -05:00

root-tree.c

Btrfs: rename root_times_lock to root_item_lock

2012-12-16 20:46:21 -05:00

scrub.c

Btrfs: fix BUG() in scrub when first superblock reading gives EIO

2012-12-16 20:46:28 -05:00

send.c

Btrfs: fix memory leak in name_cache_insert()

2013-01-14 13:52:30 -05:00

send.h

Btrfs: write_buf is now callable outside send.c

2012-10-04 09:39:55 -04:00

struct-funcs.c

Btrfs: rewrite BTRFS_SETGET_FUNCS

2012-07-23 16:28:06 -04:00

super.c

Btrfs: use slabs for auto defrag allocation

2012-12-16 20:46:11 -05:00

sysfs.c

btrfs: Remove unused sysfs code

2011-06-17 14:54:18 -04:00

transaction.c

Btrfs: fix hash overflow handling

2012-12-17 14:48:21 -05:00

transaction.h

Btrfs: improve the noflush reservation

2012-12-11 13:31:31 -05:00

tree-defrag.c

btrfs: drop unused parameter from btrfs_release_path

2011-05-02 13:57:22 +02:00

tree-log.c

Btrfs: use tokens where we can in the tree log

2012-12-16 20:46:26 -05:00

tree-log.h

btrfs: return void in functions without error conditions

2012-03-22 01:45:34 +01:00

ulist.c

Btrfs: make aux field of ulist 64 bit

2012-10-01 15:18:53 -04:00

ulist.h

Btrfs: make aux field of ulist 64 bit

2012-10-01 15:18:53 -04:00

version.h

…

volumes.c

btrfs: get the device in write mode when deleting it

2013-01-14 13:52:31 -05:00

volumes.h

Btrfs: put raid properties into global table

2012-12-16 20:46:28 -05:00

xattr.c

Btrfs: only log the inode item if we can get away with it

2012-12-16 20:46:21 -05:00

xattr.h

fs/vfs/security: pass last path component to LSM on inode creation

2011-02-01 11:12:29 -05:00

zlib.c

btrfs: fix message printing

2012-10-09 09:19:57 -04:00