aboutsummaryrefslogtreecommitdiff
path: root/fs/ntfs/aops.c
diff options
context:
space:
mode:
authorAnton Altaparmakov <aia21@cantab.net>2005-04-06 16:11:20 +0100
committerAnton Altaparmakov <aia21@cantab.net>2005-05-05 11:49:42 +0100
commitd53ee3222459f347cb18985a845864bc81a44eaf (patch)
treee9f8a061e958579a6de1d3ee133fd30ca4139f9c /fs/ntfs/aops.c
parent7fafb8b634121f4fa35ff92f85737f8bc2259f06 (diff)
downloadlinux-linaro-d53ee3222459f347cb18985a845864bc81a44eaf.tar.gz
NTFS: Use MAX_BUF_PER_PAGE instead of variable sized array allocation for
better code generation and one less sparse warning in fs/ntfs/aops.c. Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Diffstat (limited to 'fs/ntfs/aops.c')
-rw-r--r--fs/ntfs/aops.c14
1 files changed, 8 insertions, 6 deletions
diff --git a/fs/ntfs/aops.c b/fs/ntfs/aops.c
index 6241c4cfbe2..24c46c20033 100644
--- a/fs/ntfs/aops.c
+++ b/fs/ntfs/aops.c
@@ -825,17 +825,15 @@ static int ntfs_write_mst_block(struct page *page,
ntfs_inode *ni = NTFS_I(vi);
ntfs_volume *vol = ni->vol;
u8 *kaddr;
- unsigned char bh_size_bits = vi->i_blkbits;
- unsigned int bh_size = 1 << bh_size_bits;
unsigned int rec_size = ni->itype.index.block_size;
ntfs_inode *locked_nis[PAGE_CACHE_SIZE / rec_size];
struct buffer_head *bh, *head, *tbh, *rec_start_bh;
- int max_bhs = PAGE_CACHE_SIZE / bh_size;
- struct buffer_head *bhs[max_bhs];
+ struct buffer_head *bhs[MAX_BUF_PER_PAGE];
runlist_element *rl;
- int i, nr_locked_nis, nr_recs, nr_bhs, bhs_per_rec, err, err2;
- unsigned rec_size_bits;
+ int i, nr_locked_nis, nr_recs, nr_bhs, max_bhs, bhs_per_rec, err, err2;
+ unsigned bh_size, rec_size_bits;
BOOL sync, is_mft, page_is_dirty, rec_is_dirty;
+ unsigned char bh_size_bits;
ntfs_debug("Entering for inode 0x%lx, attribute type 0x%x, page index "
"0x%lx.", vi->i_ino, ni->type, page->index);
@@ -850,7 +848,11 @@ static int ntfs_write_mst_block(struct page *page,
*/
BUG_ON(!(is_mft || S_ISDIR(vi->i_mode) ||
(NInoAttr(ni) && ni->type == AT_INDEX_ALLOCATION)));
+ bh_size_bits = vi->i_blkbits;
+ bh_size = 1 << bh_size_bits;
+ max_bhs = PAGE_CACHE_SIZE / bh_size;
BUG_ON(!max_bhs);
+ BUG_ON(max_bhs > MAX_BUF_PER_PAGE);
/* Were we called for sync purposes? */
sync = (wbc->sync_mode == WB_SYNC_ALL);