lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 14 Aug 2015 16:09:11 -0700 From: Jaegeuk Kim <jaegeuk@...nel.org> To: linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org, linux-f2fs-devel@...ts.sourceforge.net Cc: Jaegeuk Kim <jaegeuk@...nel.org> Subject: [PATCH 2/2] f2fs: avoid garbage collecting already moved node blocks If node blocks were already moved, we don't need to move them again. Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org> --- fs/f2fs/gc.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/fs/f2fs/gc.c b/fs/f2fs/gc.c index 81de28d8..0a5d573 100644 --- a/fs/f2fs/gc.c +++ b/fs/f2fs/gc.c @@ -396,14 +396,18 @@ static void gc_node_segment(struct f2fs_sb_info *sbi, { bool initial = true; struct f2fs_summary *entry; + block_t start_addr; int off; + start_addr = START_BLOCK(sbi, segno); + next_step: entry = sum; for (off = 0; off < sbi->blocks_per_seg; off++, entry++) { nid_t nid = le32_to_cpu(entry->nid); struct page *node_page; + struct node_info ni; /* stop BG_GC if there is not enough free sections. */ if (gc_type == BG_GC && has_not_enough_free_secs(sbi, 0)) @@ -426,6 +430,12 @@ next_step: continue; } + get_node_info(sbi, nid, &ni); + if (ni.blk_addr != start_addr + off) { + f2fs_put_page(node_page, 1); + continue; + } + /* set page dirty and write it */ if (gc_type == FG_GC) { f2fs_wait_on_page_writeback(node_page, NODE); -- 2.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists