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f2fs: avoid to write during the recovery 

This patch enhances the recovery routine not to write any data/node/meta until
its completion.
If any writes are sent to the disk, it could contaminate the written history
that will be used for further recovery.

Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
This commit is contained in:
Jaegeuk Kim 2013-10-16 15:09:26 +09:00
parent e234088758
commit 87a9bd2656
2 changed files with 12 additions and 7 deletions
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2
fs/f2fs/checkpoint.c
View File

@ -81,7 +81,7 @@ static int f2fs_write_meta_page(struct page *page,
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
/* Should not write any meta pages, if any IO error was occurred */
if (wbc->for_reclaim ||
if (wbc->for_reclaim || sbi->por_doing ||
is_set_ckpt_flags(F2FS_CKPT(sbi), CP_ERROR_FLAG)) {
dec_page_count(sbi, F2FS_DIRTY_META);
wbc->pages_skipped++;

17
fs/f2fs/node.c
View File

@ -1156,6 +1156,9 @@ static int f2fs_write_node_page(struct page *page,
block_t new_addr;
struct node_info ni;
if (sbi->por_doing)
goto redirty_out;
wait_on_page_writeback(page);
/* get old block addr of this node page */
@ -1171,12 +1174,8 @@ static int f2fs_write_node_page(struct page *page,
return 0;
}
if (wbc->for_reclaim) {
dec_page_count(sbi, F2FS_DIRTY_NODES);
wbc->pages_skipped++;
set_page_dirty(page);
return AOP_WRITEPAGE_ACTIVATE;
}
if (wbc->for_reclaim)
goto redirty_out;
mutex_lock(&sbi->node_write);
set_page_writeback(page);
@ -1186,6 +1185,12 @@ static int f2fs_write_node_page(struct page *page,
mutex_unlock(&sbi->node_write);
unlock_page(page);
return 0;
redirty_out:
dec_page_count(sbi, F2FS_DIRTY_NODES);
wbc->pages_skipped++;
set_page_dirty(page);
return AOP_WRITEPAGE_ACTIVATE;
}
/*