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Subject[PATCH] Support HFS+ not filling its device completely
Hello, all. My HFS+ previously was on slightly smaller partition
and was subsequently dd'ed to its current location. Mac OS X doesn't
mind and I don't mind losing a little space. However Linux fails to
locate second superblock and hence to mount it. This patch uses
the size field from the first superblock to locate the second.


Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
---
fs/hfsplus/wrapper.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/fs/hfsplus/wrapper.c b/fs/hfsplus/wrapper.c
index 7daf4b8..a7e1268 100644
--- a/fs/hfsplus/wrapper.c
+++ b/fs/hfsplus/wrapper.c
@@ -206,6 +206,9 @@ reread:
set_bit(HFSPLUS_SB_HFSX, &sbi->flags);
/*FALLTHRU*/
case cpu_to_be16(HFSPLUS_VOLHEAD_SIG):
+ part_size = (((u64) be32_to_cpu(sbi->s_vhdr->blocksize)
+ * (u64) be32_to_cpu(sbi->s_vhdr->total_blocks))
+ >> HFSPLUS_SECTOR_SHIFT);
break;
case cpu_to_be16(HFSP_WRAP_MAGIC):
if (!hfsplus_read_mdb(sbi->s_vhdr, &wd))
--
1.7.10
--
Regards
Vladimir 'φ-coder/phcoder' Serbinenko

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