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authorChao Yu <yuchao0@huawei.com>2018-09-20 15:05:00 +0300
committerJaegeuk Kim <jaegeuk@kernel.org>2018-10-23 03:54:47 +0300
commitaf033b2aa8a874fd5737fafe90d159136527b5b4 (patch)
treea038b3b03568cb20fc678a1183f423d330f97028 /fs/f2fs/inode.c
parent26b5a079197c8cb6725565968b7fd3299bd1877b (diff)
downloadlinux-af033b2aa8a874fd5737fafe90d159136527b5b4.tar.xz
f2fs: guarantee journalled quota data by checkpoint
For journalled quota mode, let checkpoint to flush dquot dirty data and quota file data to guarntee persistence of all quota sysfile in last checkpoint, by this way, we can avoid corrupting quota sysfile when encountering SPO. The implementation is as below: 1. add a global state SBI_QUOTA_NEED_FLUSH to indicate that there is cached dquot metadata changes in quota subsystem, and later checkpoint should: a) flush dquot metadata into quota file. b) flush quota file to storage to keep file usage be consistent. 2. add a global state SBI_QUOTA_NEED_REPAIR to indicate that quota operation failed due to -EIO or -ENOSPC, so later, a) checkpoint will skip syncing dquot metadata. b) CP_QUOTA_NEED_FSCK_FLAG will be set in last cp pack to give a hint for fsck repairing. 3. add a global state SBI_QUOTA_SKIP_FLUSH, in checkpoint, if quota data updating is very heavy, it may cause hungtask in block_operation(). To avoid this, if our retry time exceed threshold, let's just skip flushing and retry in next checkpoint(). Signed-off-by: Weichao Guo <guoweichao@huawei.com> Signed-off-by: Chao Yu <yuchao0@huawei.com> [Jaegeuk Kim: avoid warnings and set fsck flag] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/inode.c')
-rw-r--r--fs/f2fs/inode.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index 57a7a15239d6..91ceee0ed4c4 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -654,7 +654,11 @@ void f2fs_evict_inode(struct inode *inode)
if (inode->i_nlink || is_bad_inode(inode))
goto no_delete;
- dquot_initialize(inode);
+ err = dquot_initialize(inode);
+ if (err) {
+ err = 0;
+ set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+ }
f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
@@ -686,9 +690,10 @@ retry:
goto retry;
}
- if (err)
+ if (err) {
f2fs_update_inode_page(inode);
- dquot_free_inode(inode);
+ set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
+ }
sb_end_intwrite(inode->i_sb);
no_delete:
dquot_drop(inode);