6.1-stable review patch. If anyone has any objections, please let me know.
------------------
From: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx>
commit 3f5ef5109f6a054ce58b3bec7214ed76c9cc269f upstream.
bitmap_size() is a pretty generic name and one may want to use it for
a generic bitmap API function. At the same time, its logic is
NTFS-specific, as it aligns to the sizeof(u64), not the sizeof(long)
(although it uses ideologically right ALIGN() instead of division).
Add the prefix 'ntfs3_' used for that FS (not just 'ntfs_' to not mix
it with the legacy module) and use generic BITS_TO_U64() while at it.
Suggested-by: Yury Norov <yury.norov@xxxxxxxxx> # BITS_TO_U64()
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@xxxxxxxxx>
Reviewed-by: Yury Norov <yury.norov@xxxxxxxxx>
Signed-off-by: Alexander Lobakin <aleksander.lobakin@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ntfs3/bitmap.c | 4 ++--
fs/ntfs3/fsntfs.c | 2 +-
fs/ntfs3/index.c | 11 ++++++-----
fs/ntfs3/ntfs_fs.h | 4 ++--
fs/ntfs3/super.c | 2 +-
5 files changed, 12 insertions(+), 11 deletions(-)
--- a/fs/ntfs3/bitmap.c
+++ b/fs/ntfs3/bitmap.c
@@ -656,7 +656,7 @@ int wnd_init(struct wnd_bitmap *wnd, str
wnd->total_zeroes = nbits;
wnd->extent_max = MINUS_ONE_T;
wnd->zone_bit = wnd->zone_end = 0;
- wnd->nwnd = bytes_to_block(sb, bitmap_size(nbits));
+ wnd->nwnd = bytes_to_block(sb, ntfs3_bitmap_size(nbits));
wnd->bits_last = nbits & (wbits - 1);
if (!wnd->bits_last)
wnd->bits_last = wbits;
@@ -1320,7 +1320,7 @@ int wnd_extend(struct wnd_bitmap *wnd, s
return -EINVAL;
/* Align to 8 byte boundary. */
- new_wnd = bytes_to_block(sb, bitmap_size(new_bits));
+ new_wnd = bytes_to_block(sb, ntfs3_bitmap_size(new_bits));
new_last = new_bits & (wbits - 1);
if (!new_last)
new_last = wbits;
--- a/fs/ntfs3/fsntfs.c
+++ b/fs/ntfs3/fsntfs.c
@@ -493,7 +493,7 @@ static int ntfs_extend_mft(struct ntfs_s
ni->mi.dirty = true;
/* Step 2: Resize $MFT::BITMAP. */
- new_bitmap_bytes = bitmap_size(new_mft_total);
+ new_bitmap_bytes = ntfs3_bitmap_size(new_mft_total);
err = attr_set_size(ni, ATTR_BITMAP, NULL, 0, &sbi->mft.bitmap.run,
new_bitmap_bytes, &new_bitmap_bytes, true, NULL);
--- a/fs/ntfs3/index.c
+++ b/fs/ntfs3/index.c
@@ -1454,8 +1454,8 @@ static int indx_create_allocate(struct n
alloc->nres.valid_size = alloc->nres.data_size = cpu_to_le64(data_size);
- err = ni_insert_resident(ni, bitmap_size(1), ATTR_BITMAP, in->name,
- in->name_len, &bitmap, NULL, NULL);
+ err = ni_insert_resident(ni, ntfs3_bitmap_size(1), ATTR_BITMAP,
+ in->name, in->name_len, &bitmap, NULL, NULL);
if (err)
goto out2;
@@ -1516,8 +1516,9 @@ static int indx_add_allocate(struct ntfs
if (bmp) {
/* Increase bitmap. */
err = attr_set_size(ni, ATTR_BITMAP, in->name, in->name_len,
- &indx->bitmap_run, bitmap_size(bit + 1),
- NULL, true, NULL);
+ &indx->bitmap_run,
+ ntfs3_bitmap_size(bit + 1), NULL, true,
+ NULL);
if (err)
goto out1;
}
@@ -2080,7 +2081,7 @@ static int indx_shrink(struct ntfs_index
if (err)
return err;
- bpb = bitmap_size(bit);
+ bpb = ntfs3_bitmap_size(bit);
if (bpb * 8 == nbits)
return 0;
--- a/fs/ntfs3/ntfs_fs.h
+++ b/fs/ntfs3/ntfs_fs.h
@@ -951,9 +951,9 @@ static inline bool run_is_empty(struct r
}
/* NTFS uses quad aligned bitmaps. */
-static inline size_t bitmap_size(size_t bits)
+static inline size_t ntfs3_bitmap_size(size_t bits)
{
- return ALIGN((bits + 7) >> 3, 8);
+ return BITS_TO_U64(bits) * sizeof(u64);
}
#define _100ns2seconds 10000000
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -1108,7 +1108,7 @@ static int ntfs_fill_super(struct super_
/* Check bitmap boundary. */
tt = sbi->used.bitmap.nbits;
- if (inode->i_size < bitmap_size(tt)) {
+ if (inode->i_size < ntfs3_bitmap_size(tt)) {
err = -EINVAL;
goto put_inode_out;
}
