linux-kernel - [PATCH 3.16 030/136] f2fs: expose some sectors to user in inline data or dentry case

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Date:   Sun, 11 Feb 2018 04:31:11 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Jaegeuk Kim" <jaegeuk@...nel.org>,
        "Chao Yu" <yuchao0@...wei.com>
Subject: [PATCH 3.16 030/136] f2fs: expose some sectors to user in inline
 data or dentry case

3.16.54-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Jaegeuk Kim <jaegeuk@...nel.org>

commit 5b4267d195dd887c4412e34b5a7365baa741b679 upstream.

If there's some data written through inline data or dentry, we need to shouw
st_blocks. This fixes reporting zero blocks even though there is small written
data.

Reviewed-by: Chao Yu <yuchao0@...wei.com>
[Jaegeuk Kim: avoid link file for quotacheck]
Signed-off-by: Jaegeuk Kim <jaegeuk@...nel.org>
[bwh: Backported to 3.16:
 - Inline dentries are not supported
 - Adjust context]
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -460,6 +460,11 @@ int f2fs_getattr(struct vfsmount *mnt,
 	struct inode *inode = dentry->d_inode;
 	generic_fillattr(inode, stat);
 	stat->blocks <<= 3;
+
+	/* we need to show initial sectors used for inline_data/dentries */
+	if (S_ISREG(inode->i_mode) && f2fs_has_inline_data(inode))
+		stat->blocks += (stat->size + 511) >> 9;
+
 	return 0;
 }