kernel_optimize_test/fs/f2fs
Chao Yu a33c150237 f2fs: fix avoid race between truncate and background GC
Thread A				Background GC
- f2fs_setattr isize to 0
 - truncate_setsize
					- gc_data_segment
					 - f2fs_get_read_data_page page #0
					  - set_page_dirty
					  - set_cold_data
 - f2fs_truncate

- f2fs_setattr isize to 4k
- read 4k <--- hit data in cached page #0

Above race condition can cause read out invalid data in a truncated
page, fix it by i_gc_rwsem[WRITE] lock.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2018-08-13 10:48:17 -07:00
..
acl.c posix_acl: convert posix_acl.a_refcount from atomic_t to refcount_t 2018-01-02 19:27:28 -08:00
acl.h f2fs: remove dead code f2fs_check_acl 2016-09-14 16:52:36 -07:00
checkpoint.c f2fs: fix invalid memory access 2018-08-10 16:19:05 -07:00
data.c f2fs: fix avoid race between truncate and background GC 2018-08-13 10:48:17 -07:00
debug.c f2fs: Allocate and stat mem used by free nid bitmap more accurately 2018-07-28 18:23:26 -07:00
dir.c f2fs: clean up symbol namespace 2018-05-31 11:31:53 -07:00
extent_cache.c f2fs: clean up symbol namespace 2018-05-31 11:31:53 -07:00
f2fs.h f2fs: fix to avoid broken of dnode block list 2018-08-10 16:19:05 -07:00
file.c f2fs: fix avoid race between truncate and background GC 2018-08-13 10:48:17 -07:00
gc.c f2fs: fix to propagate error from __get_meta_page() 2018-08-01 11:52:36 -07:00
gc.h f2fs: introduce sbi->gc_mode to determine the policy 2018-05-31 11:31:51 -07:00
hash.c f2fs: check entire encrypted bigname when finding a dentry 2017-05-04 11:44:35 -04:00
inline.c f2fs: fix to propagate error from __get_meta_page() 2018-08-01 11:52:36 -07:00
inode.c f2fs: fix to do sanity check with block address in main area v2 2018-08-13 10:48:17 -07:00
Kconfig fs/*/Kconfig: drop links to 404-compliant http://acl.bestbits.at 2018-01-01 12:45:37 -07:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
namei.c f2fs: Replace strncpy with memcpy 2018-07-28 18:26:08 -07:00
node.c f2fs: fix to avoid broken of dnode block list 2018-08-10 16:19:05 -07:00
node.h f2fs: let checkpoint flush dnode page of regular 2018-08-01 11:52:36 -07:00
recovery.c f2fs: fix wrong kernel message when recover fsync data on ro fs 2018-08-01 11:52:36 -07:00
segment.c f2fs: let checkpoint flush dnode page of regular 2018-08-01 11:52:36 -07:00
segment.h f2fs: do not set free of current section 2018-08-01 11:52:36 -07:00
shrinker.c f2fs: clean up symbol namespace 2018-05-31 11:31:53 -07:00
super.c f2fs: fix to do sanity check with inline flags 2018-08-13 10:48:17 -07:00
sysfs.c f2fs: add proc entry to show victim_secmap bitmap 2018-08-01 11:52:36 -07:00
trace.c f2fs: fix potential hangtask in f2fs_trace_pid 2018-01-02 19:27:30 -08:00
trace.h f2fs: add sbi and page pointer in f2fs_io_info 2015-05-28 15:41:32 -07:00
xattr.c f2fs: restrict setting up inode.i_advise 2018-08-01 11:52:36 -07:00
xattr.h f2fs: guard macro variables with braces 2017-04-10 19:48:10 -07:00