Jan Kara cb22c668c4 udf: Fix deadlock between writeback and udf_setsize() ...

commit f2e9535589 upstream.

udf_setsize() called truncate_setsize() with i_data_sem held. Thus
truncate_pagecache() called from truncate_setsize() could lock a page
under i_data_sem which can deadlock as page lock ranks below
i_data_sem - e. g. writeback can hold page lock and try to acquire
i_data_sem to map a block.

Fix the problem by moving truncate_setsize() calls from under
i_data_sem. It is safe for us to change i_size without holding
i_data_sem as all the places that depend on i_size being stable already
hold inode_lock.

Fixes: 7e49b6f248
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2017-07-27 15:10:20 -07:00

..

balloc.c

udf: Factor out code for creating indirect extent

2015-12-23 18:04:52 +01:00

dir.c

block,fs: untangle fs.h and blk_types.h

2016-11-01 09:43:26 -06:00

directory.c

block,fs: untangle fs.h and blk_types.h

2016-11-01 09:43:26 -06:00

ecma_167.h

udf: use __packed instead of __attribute__ ((packed))

2017-01-10 11:29:11 +01:00

file.c

udf: Fix races with i_size changes during readpage

2017-07-27 15:10:20 -07:00

ialloc.c

fs: Replace current_fs_time() with current_time()

2016-09-27 21:06:22 -04:00

inode.c

udf: Fix deadlock between writeback and udf_setsize()

2017-07-27 15:10:20 -07:00

Kconfig

udf: Update Kconfig description

2015-01-05 11:04:37 +01:00

lowlevel.c

udf: atomically read inode size

2017-01-10 11:57:34 +01:00

Makefile

switch udf to simple_fsync()

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

misc.c

udf: remove empty condition

2017-01-10 11:37:31 +01:00

namei.c

udf: use octal for permissions

2017-04-24 16:27:52 +02:00

osta_udf.h

udf: use __packed instead of __attribute__ ((packed))

2017-01-10 11:29:11 +01:00

partition.c

udf: Use correct partition reference number for metadata

2016-05-19 13:00:35 +02:00

super.c

udf: allow implicit blocksize specification during mount

2017-01-20 12:21:41 +01:00

symlink.c

statx: Add a system call to make enhanced file info available

2017-03-02 20:51:15 -05:00

truncate.c

udf: remove redundant buffer_head.h includes

2015-03-14 07:54:02 +01:00

udf_i.h

fs: cleanup slight list_entry abuse

2015-06-23 18:01:59 -04:00

udf_sb.h

udf: Use correct partition reference number for metadata

2016-05-19 13:00:35 +02:00

udfdecl.h

udf: Make stat on symlink report symlink length as st_size

2017-01-05 07:52:57 +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

udf: remove redundant sys_tz declaration

2014-09-29 13:45:12 +02:00

unicode.c

udf: Fix conversion of 'dstring' fields to UTF8

2016-04-25 15:18:50 +02:00