diff options
| author | Yunlei He <heyunlei@huawei.com> | 2017-06-01 11:43:51 +0300 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2017-07-04 12:11:33 +0300 |
| commit | d4fdf8ba0e5808ba9ad6b44337783bd9935e0982 (patch) | |
| tree | 12dee32e3d74397f78ebd5f7d321283115025f6a /fs/f2fs | |
| parent | 68390dd9bd5b2ef7c3ec69c23010b39981e264a4 (diff) | |
| download | linux-d4fdf8ba0e5808ba9ad6b44337783bd9935e0982.tar.xz | |
f2fs: fix a panic caused by NULL flush_cmd_control
Mount fs with option noflush_merge, boot failed for illegal address
fcc in function f2fs_issue_flush:
if (!test_opt(sbi, FLUSH_MERGE)) {
ret = submit_flush_wait(sbi);
atomic_inc(&fcc->issued_flush); -> Here, fcc illegal
return ret;
}
Signed-off-by: Yunlei He <heyunlei@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/segment.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index de6738b82745..c1026b78cdfc 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -566,6 +566,9 @@ int create_flush_cmd_control(struct f2fs_sb_info *sbi) init_waitqueue_head(&fcc->flush_wait_queue); init_llist_head(&fcc->issue_list); SM_I(sbi)->fcc_info = fcc; + if (!test_opt(sbi, FLUSH_MERGE)) + return err; + init_thread: fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi, "f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev)); @@ -3240,7 +3243,7 @@ int build_segment_manager(struct f2fs_sb_info *sbi) INIT_LIST_HEAD(&sm_info->sit_entry_set); - if (test_opt(sbi, FLUSH_MERGE) && !f2fs_readonly(sbi->sb)) { + if (!f2fs_readonly(sbi->sb)) { err = create_flush_cmd_control(sbi); if (err) return err; |