Jaegeuk Kim 92d602bc71 f2fs: should use GFP_NOFS for directory inodes ... We use inline_dentry which requires to allocate dentry page when adding a link. If we allow to reclaim memory from filesystem, we do down_read(&sbi->cp_rwsem) twice by f2fs_lock_op(). I think this should be okay, but how about stopping the lockdep complaint [1]? f2fs_create() - f2fs_lock_op() - f2fs_do_add_link() - __f2fs_find_entry - f2fs_get_read_data_page() -> kswapd - shrink_node - f2fs_evict_inode - f2fs_lock_op() [1] fs_reclaim ){+.+.}-{0:0} : kswapd0: lock_acquire+0x114/0x394 kswapd0: __fs_reclaim_acquire+0x40/0x50 kswapd0: prepare_alloc_pages+0x94/0x1ec kswapd0: __alloc_pages_nodemask+0x78/0x1b0 kswapd0: pagecache_get_page+0x2e0/0x57c kswapd0: f2fs_get_read_data_page+0xc0/0x394 kswapd0: f2fs_find_data_page+0xa4/0x23c kswapd0: find_in_level+0x1a8/0x36c kswapd0: __f2fs_find_entry+0x70/0x100 kswapd0: f2fs_do_add_link+0x84/0x1ec kswapd0: f2fs_mkdir+0xe4/0x1e4 kswapd0: vfs_mkdir+0x110/0x1c0 kswapd0: do_mkdirat+0xa4/0x160 kswapd0: __arm64_sys_mkdirat+0x24/0x34 kswapd0: el0_svc_common.llvm.17258447499513131576+0xc4/0x1e8 kswapd0: do_el0_svc+0x28/0xa0 kswapd0: el0_svc+0x24/0x38 kswapd0: el0_sync_handler+0x88/0xec kswapd0: el0_sync+0x1c0/0x200 kswapd0: -> #1 ( &sbi->cp_rwsem ){++++}-{3:3} : kswapd0: lock_acquire+0x114/0x394 kswapd0: down_read+0x7c/0x98 kswapd0: f2fs_do_truncate_blocks+0x78/0x3dc kswapd0: f2fs_truncate+0xc8/0x128 kswapd0: f2fs_evict_inode+0x2b8/0x8b8 kswapd0: evict+0xd4/0x2f8 kswapd0: iput+0x1c0/0x258 kswapd0: do_unlinkat+0x170/0x2a0 kswapd0: __arm64_sys_unlinkat+0x4c/0x68 kswapd0: el0_svc_common.llvm.17258447499513131576+0xc4/0x1e8 kswapd0: do_el0_svc+0x28/0xa0 kswapd0: el0_svc+0x24/0x38 kswapd0: el0_sync_handler+0x88/0xec kswapd0: el0_sync+0x1c0/0x200 Cc: stable@vger.kernel.org Fixes: bdbc90fa55 ("f2fs: don't put dentry page in pagecache into highmem") Reviewed-by: Chao Yu <chao@kernel.org> Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Reviewed-by: Light Hsieh <light.hsieh@mediatek.com> Tested-by: Light Hsieh <light.hsieh@mediatek.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>		2021-09-16 08:38:10 -07:00
..
acl.c	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
acl.h	vfs: add rcu argument to ->get_acl() callback	2021-08-18 22:08:24 +02:00
checkpoint.c	f2fs: rebuild nat_bits during umount	2021-08-23 10:25:52 -07:00
compress.c	f2fs: deallocate compressed pages when error happens	2021-08-31 14:39:24 -07:00
data.c	f2fs-for-5.15-rc1	2021-09-04 10:48:47 -07:00
debug.c	f2fs: convert S_IRUGO to 0444	2021-08-17 11:59:05 -07:00
dir.c	f2fs: support fault injection for f2fs_kmem_cache_alloc()	2021-08-17 11:59:05 -07:00
extent_cache.c	f2fs: support fault injection for f2fs_kmem_cache_alloc()	2021-08-17 11:59:05 -07:00
f2fs.h	f2fs-for-5.15-rc1	2021-09-04 10:48:47 -07:00
file.c	f2fs-for-5.15-rc1	2021-09-04 10:48:47 -07:00
gc.c	f2fs: fix to account missing .skipped_gc_rwsem	2021-08-30 10:12:47 -07:00
gc.h	f2fs: introduce gc_merge mount option	2021-03-30 18:48:56 -07:00
hash.c	f2fs: Handle casefolding with Encryption	2020-12-02 22:00:21 -08:00
inline.c	f2fs: restructure f2fs page.private layout	2021-05-14 11:22:08 -07:00
inode.c	f2fs: should use GFP_NOFS for directory inodes	2021-09-16 08:38:10 -07:00
iostat.c	f2fs: introduce periodic iostat io latency traces	2021-08-23 10:25:51 -07:00
iostat.h	f2fs: introduce periodic iostat io latency traces	2021-08-23 10:25:51 -07:00
Kconfig	f2fs: separate out iostat feature	2021-08-23 10:25:51 -07:00
Makefile	f2fs: separate out iostat feature	2021-08-23 10:25:51 -07:00
namei.c	f2fs: should use GFP_NOFS for directory inodes	2021-09-16 08:38:10 -07:00
node.c	f2fs: rebuild nat_bits during umount	2021-08-23 10:25:52 -07:00
node.h	f2fs: swap: support migrating swapfile in aligned write mode	2021-06-23 01:09:35 -07:00
recovery.c	f2fs: support fault injection for f2fs_kmem_cache_alloc()	2021-08-17 11:59:05 -07:00
segment.c	f2fs: Don't create discard thread when device doesn't support realtime discard	2021-08-30 10:12:46 -07:00
segment.h	f2fs: correct comment in segment.h	2021-08-13 11:57:08 -07:00
shrinker.c	f2fs: avoid race condition for shrinker count	2020-12-03 00:59:26 -08:00
super.c	f2fs-for-5.15-rc1	2021-09-04 10:48:47 -07:00
sysfs.c	f2fs-for-5.15-rc1	2021-09-04 10:48:47 -07:00
verity.c	f2fs-for-5.13-rc1	2021-05-04 18:03:38 -07:00
xattr.c	f2fs: support fault injection for f2fs_kmem_cache_alloc()	2021-08-17 11:59:05 -07:00
xattr.h	f2fs: code cleanup by removing ifdef macro surrounding	2020-05-26 18:56:10 -07:00