Jan Kara db0badc58e udf: Fix lock inversion between iprune_mutex and alloc_mutex (v2) ... A memory allocation inside alloc_mutex must not recurse back into the filesystem itself because that leads to lock inversion between iprune_mutex and alloc_mutex (and thus to deadlocks - see traces below). alloc_mutex is actually needed only to update allocation statistics in the superblock so we can drop it before we start allocating memory for the inode. tar D ffff81015b9c8c90 0 6614 6612 ffff8100d5a21a20 0000000000000086 0000000000000000 00000000ffff0000 ffff81015b9c8c90 ffff81015b8f0cd0 ffff81015b9c8ee0 0000000000000000 0000000000000003 0000000000000000 0000000000000000 0000000000000000 Call Trace: [<ffffffff803c1d8a>] __mutex_lock_slowpath+0x64/0x9b [<ffffffff803c1bef>] mutex_lock+0xa/0xb [<ffffffff8027f8c2>] shrink_icache_memory+0x38/0x200 [<ffffffff80257742>] shrink_slab+0xe3/0x15b [<ffffffff802579db>] try_to_free_pages+0x221/0x30d [<ffffffff8025657e>] isolate_pages_global+0x0/0x31 [<ffffffff8025324b>] __alloc_pages_internal+0x252/0x3ab [<ffffffff8026b08b>] cache_alloc_refill+0x22e/0x47b [<ffffffff8026ae37>] kmem_cache_alloc+0x3b/0x61 [<ffffffff8026b15b>] cache_alloc_refill+0x2fe/0x47b [<ffffffff8026b34e>] __kmalloc+0x76/0x9c [<ffffffffa00751f2>] :udf:udf_new_inode+0x202/0x2e2 [<ffffffffa007ae5e>] :udf:udf_create+0x2f/0x16d [<ffffffffa0078f27>] :udf:udf_lookup+0xa6/0xad ... kswapd0 D ffff81015b9d9270 0 125 2 ffff81015b903c28 0000000000000046 ffffffff8028cbb0 00000000fffffffb ffff81015b9d9270 ffff81015b8f0cd0 ffff81015b9d94c0 000000000271b490 ffffe2000271b458 ffffe2000271b420 ffffe20002728dc8 ffffe20002728d90 Call Trace: [<ffffffff8028cbb0>] __set_page_dirty+0xeb/0xf5 [<ffffffff8025403a>] get_dirty_limits+0x1d/0x22f [<ffffffff803c1d8a>] __mutex_lock_slowpath+0x64/0x9b [<ffffffff803c1bef>] mutex_lock+0xa/0xb [<ffffffffa0073f58>] :udf:udf_bitmap_free_blocks+0x47/0x1eb [<ffffffffa007df31>] :udf:udf_discard_prealloc+0xc6/0x172 [<ffffffffa007875a>] :udf:udf_clear_inode+0x1e/0x48 [<ffffffff8027f121>] clear_inode+0x6d/0xc4 [<ffffffff8027f7f2>] dispose_list+0x56/0xee [<ffffffff8027fa5a>] shrink_icache_memory+0x1d0/0x200 [<ffffffff80257742>] shrink_slab+0xe3/0x15b [<ffffffff80257e93>] kswapd+0x346/0x447 ... Reported-by: Tibor Tajti <tibor.tajti@gmail.com> Reviewed-by: Ingo Oeser <ioe-lkml@rameria.de> Signed-off-by: Jan Kara <jack@suse.cz>		2008-08-19 11:04:36 +02:00
..
balloc.c	udf: replace all adds to little endians variables with le*_add_cpu	2008-04-17 14:22:28 +02:00
dir.c	udf: Remove declarations of arrays of size UDF_NAME_LEN (256 bytes)	2008-04-17 14:23:04 +02:00
directory.c	udf: cleanup directory offset handling	2008-02-08 09:22:36 -08:00
ecma_167.h	udf: remove unneeded kernel_timestamp type	2008-04-17 14:22:42 +02:00
file.c	udf: move headers out include/linux/	2008-04-17 14:22:23 +02:00
fsync.c	UDF: coding style conversion - lindent fixups	2007-07-21 17:49:14 -07:00
ialloc.c	udf: Fix lock inversion between iprune_mutex and alloc_mutex (v2)	2008-08-19 11:04:36 +02:00
inode.c	udf: use crc_itu_t from lib instead of udf_crc	2008-04-17 14:29:56 +02:00
lowlevel.c	udf: move headers out include/linux/	2008-04-17 14:22:23 +02:00
Makefile	udf: use crc_itu_t from lib instead of udf_crc	2008-04-17 14:29:56 +02:00
misc.c	udf: use crc_itu_t from lib instead of udf_crc	2008-04-17 14:29:56 +02:00
namei.c	Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-udf-2.6	2008-05-08 10:48:03 -07:00
osta_udf.h	UDF: coding style conversion - lindent fixups	2007-07-21 17:49:14 -07:00
partition.c	udf: fs/udf/partition.c:udf_get_pblock() mustn't be inline	2008-04-28 18:44:26 +02:00
super.c	SL*B: drop kmem cache argument from constructor	2008-07-26 12:00:07 -07:00
symlink.c	udf: move headers out include/linux/	2008-04-17 14:22:23 +02:00
truncate.c	udf: truncate: create function for updating of Allocation Ext Descriptor	2008-04-17 14:22:28 +02:00
udf_i.h	udf: replace udf_*_offset macros with functions	2008-04-17 14:22:29 +02:00
udf_sb.h	udf: Add read-only support for 2.50 UDF media	2008-04-17 14:29:36 +02:00
udfdecl.h	udf: restore UDFFS_DEBUG to being undefined by default	2008-06-16 14:24:36 +02:00
udfend.h	udf: remove unneeded kernel_timestamp type	2008-04-17 14:22:42 +02:00
udftime.c	udf: convert udf_stamp_to_time and udf_time_to_stamp to use timestamps	2008-04-17 14:22:29 +02:00
unicode.c	udf: use crc_itu_t from lib instead of udf_crc	2008-04-17 14:29:56 +02:00