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authorJaegeuk Kim <jaegeuk@kernel.org>2015-12-31 13:08:02 -0800
committerJaegeuk Kim <jaegeuk@kernel.org>2015-12-31 13:08:02 -0800
commit8d4ea29b6426470456ee9daee64bac55a3b13289 (patch)
tree7c329ca6f4881ab95873ffc6336e49d8c316d5f6
parent1f6fa26199bb164157fbf81f850df1991d10c959 (diff)
downloadblackbird-obmc-linux-8d4ea29b6426470456ee9daee64bac55a3b13289.tar.gz
blackbird-obmc-linux-8d4ea29b6426470456ee9daee64bac55a3b13289.zip
f2fs: write pending bios when cp_error is set
When testing ioc_shutdown, put_super is able to be hanged by waiting for writebacking pages as follows. INFO: task umount:2723 blocked for more than 120 seconds. Tainted: G O 4.4.0-rc3+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. umount D ffff88000859f9d8 0 2723 2110 0x00000000 ffff88000859f9d8 0000000000000000 0000000000000000 ffffffff81e11540 ffff880078c225c0 ffff8800085a0000 ffff88007fc17440 7fffffffffffffff ffffffff818239f0 ffff88000859fb48 ffff88000859f9f0 ffffffff8182310c Call Trace: [<ffffffff818239f0>] ? bit_wait+0x50/0x50 [<ffffffff8182310c>] schedule+0x3c/0x90 [<ffffffff81827fb9>] schedule_timeout+0x2d9/0x430 [<ffffffff810e0f8f>] ? mark_held_locks+0x6f/0xa0 [<ffffffff8111614d>] ? ktime_get+0x7d/0x140 [<ffffffff818239f0>] ? bit_wait+0x50/0x50 [<ffffffff8106a655>] ? kvm_clock_get_cycles+0x25/0x30 [<ffffffff8111617c>] ? ktime_get+0xac/0x140 [<ffffffff818239f0>] ? bit_wait+0x50/0x50 [<ffffffff81822564>] io_schedule_timeout+0xa4/0x110 [<ffffffff81823a25>] bit_wait_io+0x35/0x50 [<ffffffff818235bd>] __wait_on_bit+0x5d/0x90 [<ffffffff811b9e8b>] wait_on_page_bit+0xcb/0xf0 [<ffffffff810d5f90>] ? autoremove_wake_function+0x40/0x40 [<ffffffff811cf84c>] truncate_inode_pages_range+0x4bc/0x840 [<ffffffff811cfc3d>] truncate_inode_pages_final+0x4d/0x60 [<ffffffffc023ced5>] f2fs_evict_inode+0x75/0x400 [f2fs] [<ffffffff812639bc>] evict+0xbc/0x190 [<ffffffff81263d19>] iput+0x229/0x2c0 [<ffffffffc0241885>] f2fs_put_super+0x105/0x1a0 [f2fs] [<ffffffff8124756a>] generic_shutdown_super+0x6a/0xf0 [<ffffffff812478f7>] kill_block_super+0x27/0x70 [<ffffffffc0241290>] kill_f2fs_super+0x20/0x30 [f2fs] [<ffffffff81247b03>] deactivate_locked_super+0x43/0x70 [<ffffffff81247f4c>] deactivate_super+0x5c/0x60 [<ffffffff81268d2f>] cleanup_mnt+0x3f/0x90 [<ffffffff81268dc2>] __cleanup_mnt+0x12/0x20 [<ffffffff810ac463>] task_work_run+0x73/0xa0 [<ffffffff810032ac>] exit_to_usermode_loop+0xcc/0xd0 [<ffffffff81003e7c>] syscall_return_slowpath+0xcc/0xe0 [<ffffffff81829ea2>] int_ret_from_sys_call+0x25/0x9f Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
-rw-r--r--fs/f2fs/checkpoint.c2
-rw-r--r--fs/f2fs/data.c2
-rw-r--r--fs/f2fs/node.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index 6b89ac69b7e4..5dbafd5e83d9 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -237,7 +237,7 @@ static int f2fs_write_meta_page(struct page *page,
dec_page_count(sbi, F2FS_DIRTY_META);
unlock_page(page);
- if (wbc->for_reclaim)
+ if (wbc->for_reclaim || unlikely(f2fs_cp_error(sbi)))
f2fs_submit_merged_bio(sbi, META, WRITE);
return 0;
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index 14b40a9db5b3..4851e84d0283 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1179,7 +1179,7 @@ out:
unlock_page(page);
if (need_balance_fs)
f2fs_balance_fs(sbi);
- if (wbc->for_reclaim) {
+ if (wbc->for_reclaim || unlikely(f2fs_cp_error(sbi))) {
f2fs_submit_merged_bio(sbi, DATA, WRITE);
remove_dirty_inode(inode);
}
diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c
index 94d9753f8c53..669c44ef9303 100644
--- a/fs/f2fs/node.c
+++ b/fs/f2fs/node.c
@@ -1368,7 +1368,7 @@ static int f2fs_write_node_page(struct page *page,
up_read(&sbi->node_write);
unlock_page(page);
- if (wbc->for_reclaim)
+ if (wbc->for_reclaim || unlikely(f2fs_cp_error(sbi)))
f2fs_submit_merged_bio(sbi, NODE, WRITE);
return 0;
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