Messages in this thread Patch in this message | | | From | Jaegeuk Kim <> | Subject | [PATCH 2/2] f2fs: avoid f2fs_bug_on if f2fs_get_meta_page_nofail got EIO | Date | Mon, 17 Sep 2018 19:18:05 -0700 |
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This patch avoids BUG_ON when f2fs_get_meta_page_nofail got EIO during xfstests/generic/475.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> --- fs/f2fs/checkpoint.c | 2 +- fs/f2fs/gc.c | 2 ++ fs/f2fs/node.c | 12 ++++++++++-- fs/f2fs/recovery.c | 2 ++ fs/f2fs/segment.c | 3 +++ 5 files changed, 18 insertions(+), 3 deletions(-)
diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c index 01e0d8f5bbbe..6ce3cb6502dd 100644 --- a/fs/f2fs/checkpoint.c +++ b/fs/f2fs/checkpoint.c @@ -121,7 +121,7 @@ struct page *f2fs_get_meta_page_nofail(struct f2fs_sb_info *sbi, pgoff_t index) goto retry; f2fs_stop_checkpoint(sbi, false); - f2fs_bug_on(sbi, 1); + return NULL; } return page; diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 4bcc8a59fdef..d049865887cf 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -1070,6 +1070,8 @@ static int do_garbage_collect(struct f2fs_sb_info *sbi, /* reference all summary page */ while (segno < end_segno) { sum_page = f2fs_get_sum_page(sbi, segno++); + if (!sum_page) + return -EIO; unlock_page(sum_page); } diff --git a/fs/f2fs/node.c b/fs/f2fs/node.c index fa2381c0bc47..b3595522c35b 100644 --- a/fs/f2fs/node.c +++ b/fs/f2fs/node.c @@ -126,6 +126,8 @@ static struct page *get_next_nat_page(struct f2fs_sb_info *sbi, nid_t nid) /* get current nat block page with lock */ src_page = get_current_nat_page(sbi, nid); + if (!src_page) + return NULL; dst_page = f2fs_grab_meta_page(sbi, dst_off); f2fs_bug_on(sbi, PageDirty(src_page)); @@ -2265,8 +2267,12 @@ static int __f2fs_build_free_nids(struct f2fs_sb_info *sbi, nm_i->nat_block_bitmap)) { struct page *page = get_current_nat_page(sbi, nid); - ret = scan_nat_page(sbi, page, nid); - f2fs_put_page(page, 1); + if (page) { + ret = scan_nat_page(sbi, page, nid); + f2fs_put_page(page, 1); + } else { + ret = -EIO; + } if (ret) { up_read(&nm_i->nat_tree_lock); @@ -2724,6 +2730,8 @@ static void __flush_nat_entry_set(struct f2fs_sb_info *sbi, down_write(&curseg->journal_rwsem); } else { page = get_next_nat_page(sbi, start_nid); + if (!page) + return; nat_blk = page_address(page); f2fs_bug_on(sbi, !nat_blk); } diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index 56d34193a74b..a3dce16bfd6c 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -355,6 +355,8 @@ static int check_index_in_prev_nodes(struct f2fs_sb_info *sbi, } sum_page = f2fs_get_sum_page(sbi, segno); + if (!sum_page) + return -EIO; sum_node = (struct f2fs_summary_block *)page_address(sum_page); sum = sum_node->entries[blkoff]; f2fs_put_page(sum_page, 1); diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index aa96a371aaf8..cfc9eb492da1 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -2487,6 +2487,7 @@ static void change_curseg(struct f2fs_sb_info *sbi, int type) __next_free_blkoff(sbi, curseg, 0); sum_page = f2fs_get_sum_page(sbi, new_segno); + f2fs_bug_on(sbi, !sum_page); sum_node = (struct f2fs_summary_block *)page_address(sum_page); memcpy(curseg->sum_blk, sum_node, SUM_ENTRY_SIZE); f2fs_put_page(sum_page, 1); @@ -3971,6 +3972,8 @@ static int build_sit_entries(struct f2fs_sb_info *sbi) se = &sit_i->sentries[start]; page = get_current_sit_page(sbi, start); + if (!page) + return err; sit_blk = (struct f2fs_sit_block *)page_address(page); sit = sit_blk->entries[SIT_ENTRY_OFFSET(sit_i, start)]; f2fs_put_page(page, 1); -- 2.17.0.441.gb46fe60e1d-goog
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