Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1724615

[PATCH] jfs should use MAX_LFS_FILESIZE when calculating s_maxbytes

Show all headers | View raw

jfs had previously avoided the use of MAX_LFS_FILESIZE because it hadn't
accounted for the whole 32-bit index range on 32-bit systems. That has
been fixed, so we can simplify the code now.

Suggested by Andreas Dilger.

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: Andreas Dilger <adilger@dilger.ca>
Cc: jfs-discussion@lists.sourceforge.net
---
Linus,
If you don't want to pick this up now, I'll push it in the next merge
window.

 fs/jfs/super.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 78b41e1d5c67..60726ae7cf26 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -619,16 +619,10 @@ static int jfs_fill_super(struct super_block *sb, void *data, int silent)
 	if (!sb->s_root)
 		goto out_no_root;
 
-	/* logical blocks are represented by 40 bits in pxd_t, etc. */
-	sb->s_maxbytes = ((u64) sb->s_blocksize) << 40;
-#if BITS_PER_LONG == 32
-	/*
-	 * Page cache is indexed by long.
-	 * I would use MAX_LFS_FILESIZE, but it's only half as big
+	/* logical blocks are represented by 40 bits in pxd_t, etc.
+	 * and page cache is indexed by long
 	 */
-	sb->s_maxbytes = min(((u64) PAGE_SIZE << 32) - 1,
-			     (u64)sb->s_maxbytes);
-#endif
+	sb->s_maxbytes = min(((loff_t)sb->s_blocksize) << 40, MAX_LFS_FILESIZE);
 	sb->s_time_gran = 1;
 	return 0;
 
-- 
2.14.1

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH] jfs should use MAX_LFS_FILESIZE when calculating s_maxbytes Dave Kleikamp <dave.kleikamp@oracle.com> - 2017-08-31 23:50 +0200
  Re: [PATCH] jfs should use MAX_LFS_FILESIZE when calculating  s_maxbytes Andreas Dilger <adilger@dilger.ca> - 2017-09-01 00:40 +0200

csiph-web