Jan Kara 608620c3e7 udf: Fix deadlock when converting file from in-ICB one to normal one ...

commit d2eb8c3593 upstream.

During BKL removal in 2.6.38, conversion of files from in-ICB format to normal
format got broken. We call ->writepage with i_data_sem held but udf_get_block()
also acquires i_data_sem thus creating A-A deadlock.

We fix the problem by dropping i_data_sem before calling ->writepage() which is
safe since i_mutex still protects us against any changes in the file. Also fix
pagelock - i_data_sem lock inversion in udf_expand_file_adinicb() by dropping
i_data_sem before calling find_or_create_page().

Reported-by: Matthias Matiak <netzpython@mail-on.us>
Tested-by: Matthias Matiak <netzpython@mail-on.us>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

2012-01-12 11:35:09 -08:00

..

balloc.c

udf: use little-endian bitops

2011-03-23 19:46:19 -07:00

dir.c

udf: Remove unnecessary bkl usages

2011-01-06 17:03:57 +01:00

directory.c

udf: Remove dead code

2009-09-14 19:13:00 +02:00

ecma_167.h

Remove struct typedefs from fs/udf/ecma_167.h et al.

2009-04-02 12:29:47 +02:00

file.c

udf: Fix deadlock when converting file from in-ICB one to normal one

2012-01-12 11:35:09 -08:00

ialloc.c

udf: Move handling of uniqueID into a helper function and protect it by a s_alloc_mutex

2011-01-06 17:03:55 +01:00

inode.c

udf: Fix deadlock when converting file from in-ICB one to normal one

2012-01-12 11:35:09 -08:00

Kconfig

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6

2011-01-11 14:45:52 -08:00

lowlevel.c

udf: Remove dead code

2009-09-14 19:13:00 +02:00

Makefile

switch udf to simple_fsync()

2009-06-11 21:36:13 -04:00

misc.c

Fix the udf code not to pass structs on stack where possible.

2009-04-02 12:29:47 +02:00

namei.c

udf: remove unnecessary dentry_unhash from rmdir, dir rename

2011-05-28 01:02:52 -04:00

osta_udf.h

Remove struct typedefs from fs/udf/ecma_167.h et al.

2009-04-02 12:29:47 +02:00

partition.c

udf: Use of s_alloc_mutex to serialize udf_relocate_blocks() execution

2011-01-06 17:03:56 +01:00

super.c

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6

2011-01-11 14:45:52 -08:00

symlink.c

udf: Replace bkl with the UDF_I(inode)->i_data_sem for protect udf_inode_info struct

2011-01-06 17:03:56 +01:00

truncate.c

udf: Convert UDF to new truncate calling sequence

2011-02-23 11:00:37 +01:00

udf_i.h

udf: Replace bkl with the UDF_I(inode)->i_data_sem for protect udf_inode_info struct

2011-01-06 17:03:56 +01:00

udf_sb.h

udf: Protect default inode credentials by rwlock

2011-01-06 17:03:55 +01:00

udfdecl.h

udf: Convert UDF to new truncate calling sequence

2011-02-23 11:00:37 +01:00

udfend.h

Remove struct typedefs from fs/udf/ecma_167.h et al.

2009-04-02 12:29:47 +02:00

udftime.c

Remove struct typedefs from fs/udf/ecma_167.h et al.

2009-04-02 12:29:47 +02:00

unicode.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