| 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: Sat, 28 Feb 2015 17:23:30 +0800 From: Chao Yu <chao2.yu@...sung.com> To: Jaegeuk Kim <jaegeuk@...nel.org>, Changman Lee <cm224.lee@...sung.com> Cc: linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org Subject: [PATCH] f2fs: fix to issue small discard in real-time mode discard Now in f2fs, we share functions and structures for batch mode and real-time mode discard. For real-time mode discard, in shared function add_discard_addrs, we will use uninitialized trim_minlen in struct cp_control to compare with length of contiguous free blocks to decide whether skipping discard fragmented freespace or not, this makes us ignore small discard sometimes. Fix it. Signed-off-by: Chao Yu <chao2.yu@...sung.com> --- fs/f2fs/segment.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/f2fs/segment.c b/fs/f2fs/segment.c index daee4ab..fcc1cc2 100644 --- a/fs/f2fs/segment.c +++ b/fs/f2fs/segment.c @@ -549,7 +549,7 @@ static void add_discard_addrs(struct f2fs_sb_info *sbi, struct cp_control *cpc) end = __find_rev_next_zero_bit(dmap, max_blocks, start + 1); - if (end - start < cpc->trim_minlen) + if (force && end - start < cpc->trim_minlen) continue; __add_discard_entry(sbi, cpc, start, end); -- 2.3.1 -- 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