linux-kernel - [PATCH] f2fs: fix max orphan inodes calculation

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Message-Id: <1425020704-10355-1-git-send-email-wanpeng.li@linux.intel.com>
Date:	Fri, 27 Feb 2015 15:05:04 +0800
From:	Wanpeng Li <wanpeng.li@...ux.intel.com>
To:	Jaegeuk Kim <jaegeuk@...nel.org>
Cc:	Changman Lee <cm224.lee@...sung.com>,
	linux-f2fs-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org,
	Wanpeng Li <wanpeng.li@...ux.intel.com>
Subject: [PATCH] f2fs: fix max orphan inodes calculation 

cp_payload is introduced for sit bitmap to support large volume, and it is 
just after the block of f2fs_checkpoint + nat bitmap, so the first segment 
should include F2FS_CP_PACKS + NR_CURSEG_TYPE + cp_payload + orphan blocks. 
However, current max orphan inodes calculation don't consider cp_payload, 
this patch fix it by reducing the number of cp_payload from total blocks of 
the first segment when calculate max orphan inodes.

Signed-off-by: Wanpeng Li <wanpeng.li@...ux.intel.com>
---
 fs/f2fs/checkpoint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/f2fs/checkpoint.c b/fs/f2fs/checkpoint.c
index db82e09..3c9d677 100644
--- a/fs/f2fs/checkpoint.c
+++ b/fs/f2fs/checkpoint.c
@@ -1109,7 +1109,7 @@ void init_ino_entry_info(struct f2fs_sb_info *sbi)
 	 * for cp pack we can have max 1020*504 orphan entries
 	 */
 	sbi->max_orphans = (sbi->blocks_per_seg - F2FS_CP_PACKS -
-			NR_CURSEG_TYPE) * F2FS_ORPHANS_PER_BLOCK;
+			NR_CURSEG_TYPE - __cp_payload(sbi)) * F2FS_ORPHANS_PER_BLOCK;
 }
 
 int __init create_checkpoint_caches(void)
-- 
1.9.1

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