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Jaegeuk Kim e9afe7c864 f2fs: do not wait for writeback in write_begin ... [ Upstream commit 86d54795c9 ] Otherwise we can get livelock like below. [79880.428136] dbench D 0 18405 18404 0x00000000 [79880.428139] Call Trace: [79880.428142] __schedule+0x219/0x6b0 [79880.428144] schedule+0x36/0x80 [79880.428147] schedule_timeout+0x243/0x2e0 [79880.428152] ? update_sd_lb_stats+0x16b/0x5f0 [79880.428155] ? ktime_get+0x3c/0xb0 [79880.428157] io_schedule_timeout+0xa6/0x110 [79880.428161] __lock_page+0xf7/0x130 [79880.428164] ? unlock_page+0x30/0x30 [79880.428167] pagecache_get_page+0x16b/0x250 [79880.428171] grab_cache_page_write_begin+0x20/0x40 [79880.428182] f2fs_write_begin+0xa2/0xdb0 [f2fs] [79880.428192] ? f2fs_mark_inode_dirty_sync+0x16/0x30 [f2fs] [79880.428197] ? kmem_cache_free+0x79/0x200 [79880.428203] ? __mark_inode_dirty+0x17f/0x360 [79880.428206] generic_perform_write+0xbb/0x190 [79880.428213] ? file_update_time+0xa4/0xf0 [79880.428217] __generic_file_write_iter+0x19b/0x1e0 [79880.428226] f2fs_file_write_iter+0x9c/0x180 [f2fs] [79880.428231] __vfs_write+0xc5/0x140 [79880.428235] vfs_write+0xb2/0x1b0 [79880.428238] SyS_write+0x46/0xa0 [79880.428242] entry_SYSCALL_64_fastpath+0x1e/0xad Fixes: cae96a5c8ab6 ("f2fs: check io submission more precisely") Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2017-10-21 17:21:35 +02:00
..
acl.c	f2fs: Don't clear SGID when inheriting ACLs	2017-07-27 15:08:03 -07:00
acl.h	f2fs: remove dead code f2fs_check_acl	2016-09-14 16:52:36 -07:00
checkpoint.c	f2fs: fix to determine start_cp_addr by sbi->cur_cp_pack	2017-01-06 10:40:14 +01:00
data.c	f2fs: do not wait for writeback in write_begin	2017-10-21 17:21:35 +02:00
debug.c	f2fs: remove percpu_count due to performance regression	2017-01-12 11:39:35 +01:00
dir.c	fscrypt: avoid collisions when presenting long encrypted filenames	2017-05-25 15:44:38 +02:00
extent_cache.c	f2fs: fix a problem of using memory after free	2017-03-12 06:41:51 +01:00
f2fs.h	crypto: Work around deallocated stack frame reference gcc bug on sparc.	2017-06-24 07:11:17 +02:00
file.c	f2fs: fix overflow due to condition check order	2017-01-06 10:40:14 +01:00
gc.c	f2fs: add ovp valid_blocks check for bg gc victim to fg_gc	2017-03-12 06:41:51 +01:00
gc.h	f2fs: detect idle time depending on user behavior	2016-01-11 15:56:37 -08:00
hash.c	f2fs: check entire encrypted bigname when finding a dentry	2017-05-25 15:44:38 +02:00
inline.c	f2fs: check entire encrypted bigname when finding a dentry	2017-05-25 15:44:38 +02:00
inode.c	f2fs: support configuring fault injection per superblock	2016-09-30 17:34:31 -07:00
Kconfig	f2fs: add mount option to select fault injection ratio	2016-05-07 10:32:22 -07:00
Makefile	fs crypto: move per-file encryption from f2fs tree to fs/crypto	2016-03-17 21:19:33 -07:00
namei.c	f2fs: don't allow encrypted operations without keys	2017-10-12 11:51:26 +02:00
node.c	Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-10-10 13:04:49 -07:00
node.h	f2fs: introduce cp_lock to protect updating of ckpt_flags	2016-09-30 17:34:20 -07:00
recovery.c	f2fs: check hot_data for roll-forward recovery	2017-09-20 08:19:56 +02:00
segment.c	f2fs: do SSR for data when there is enough free space	2017-10-21 17:21:35 +02:00
segment.h	f2fs: add ovp valid_blocks check for bg gc victim to fg_gc	2017-03-12 06:41:51 +01:00
shrinker.c	f2fs: produce more nids and reduce readahead nats	2016-07-06 10:44:08 -07:00
super.c	f2fs: sanity check checkpoint segno and blkoff	2017-08-11 08:49:31 -07:00
trace.c	f2fs: use bio op accessors	2016-06-07 13:41:38 -06:00
trace.h	f2fs: add sbi and page pointer in f2fs_io_info	2015-05-28 15:41:32 -07:00
xattr.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2016-10-10 20:16:43 -07:00
xattr.h	f2fs: add missing argument to f2fs_setxattr stub	2016-03-17 21:19:47 -07:00