[PATCH 1/1 linux-next] GFS2: use BIT() macro

From: Fabian Frederick
Date: Sun Jul 24 2016 - 10:24:29 EST

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Replace 1 << value shift by more explicit BIT() macro

Also fixes two bare unsigned definitions:

WARNING: Prefer 'unsigned int' to bare use of 'unsigned'
+ unsigned hsize = BIT(ip->i_depth);

Signed-off-by: Fabian Frederick <fabf@xxxxxxxxx>
---
fs/gfs2/aops.c | 2 +-
fs/gfs2/bmap.c | 6 +++---
fs/gfs2/dir.c | 20 ++++++++++----------
fs/gfs2/glock.c | 2 +-
fs/gfs2/inode.h | 2 +-
fs/gfs2/ops_fstype.c | 8 ++++----
fs/gfs2/quota.c | 4 ++--
fs/gfs2/super.c | 2 +-
8 files changed, 23 insertions(+), 23 deletions(-)

diff --git a/fs/gfs2/aops.c b/fs/gfs2/aops.c
index 82df368..71dbbd4 100644
--- a/fs/gfs2/aops.c
+++ b/fs/gfs2/aops.c
@@ -187,7 +187,7 @@ static int __gfs2_jdata_writepage(struct page *page, struct writeback_control *w
ClearPageChecked(page);
if (!page_has_buffers(page)) {
create_empty_buffers(page, inode->i_sb->s_blocksize,
- (1 << BH_Dirty)|(1 << BH_Uptodate));
+ BIT(BH_Dirty)|BIT(BH_Uptodate));
}
gfs2_page_add_databufs(ip, page, 0, sdp->sd_vfs->s_blocksize-1);
}
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 6e2bec1..645721f 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -82,8 +82,8 @@ static int gfs2_unstuffer_page(struct gfs2_inode *ip, struct buffer_head *dibh,
}

if (!page_has_buffers(page))
- create_empty_buffers(page, 1 << inode->i_blkbits,
- (1 << BH_Uptodate));
+ create_empty_buffers(page, BIT(inode->i_blkbits),
+ BIT(BH_Uptodate));

bh = page_buffers(page);

@@ -690,7 +690,7 @@ int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsi
BUG_ON(!dblock);
BUG_ON(!new);

- bh.b_size = 1 << (inode->i_blkbits + (create ? 0 : 5));
+ bh.b_size = BIT(inode->i_blkbits + (create ? 0 : 5));
ret = gfs2_block_map(inode, lblock, &bh, create);
*extlen = bh.b_size >> inode->i_blkbits;
*dblock = bh.b_blocknr;
diff --git a/fs/gfs2/dir.c b/fs/gfs2/dir.c
index fcb59b2..db8fbeb 100644
--- a/fs/gfs2/dir.c
+++ b/fs/gfs2/dir.c
@@ -351,7 +351,7 @@ static __be64 *gfs2_dir_get_hash_table(struct gfs2_inode *ip)
if (hc)
return hc;

- hsize = 1 << ip->i_depth;
+ hsize = BIT(ip->i_depth);
hsize *= sizeof(__be64);
if (hsize != i_size_read(&ip->i_inode)) {
gfs2_consist_inode(ip);
@@ -819,8 +819,8 @@ static struct gfs2_dirent *gfs2_dirent_search(struct inode *inode,

if (ip->i_diskflags & GFS2_DIF_EXHASH) {
struct gfs2_leaf *leaf;
- unsigned hsize = 1 << ip->i_depth;
- unsigned index;
+ unsigned int hsize = BIT(ip->i_depth);
+ unsigned int index;
u64 ln;
if (hsize * sizeof(u64) != i_size_read(inode)) {
gfs2_consist_inode(ip);
@@ -932,7 +932,7 @@ static int dir_make_exhash(struct inode *inode)
return -ENOSPC;
bn = bh->b_blocknr;

- gfs2_assert(sdp, dip->i_entries < (1 << 16));
+ gfs2_assert(sdp, dip->i_entries < BIT(16));
leaf->lf_entries = cpu_to_be16(dip->i_entries);

/* Copy dirents */
@@ -1041,7 +1041,7 @@ static int dir_split_leaf(struct inode *inode, const struct qstr *name)
bn = nbh->b_blocknr;

/* Compute the start and len of leaf pointers in the hash table. */
- len = 1 << (dip->i_depth - be16_to_cpu(oleaf->lf_depth));
+ len = BIT(dip->i_depth - be16_to_cpu(oleaf->lf_depth));
half_len = len >> 1;
if (!half_len) {
pr_warn("i_depth %u lf_depth %u index %u\n",
@@ -1163,7 +1163,7 @@ static int dir_double_exhash(struct gfs2_inode *dip)
int x;
int error = 0;

- hsize = 1 << dip->i_depth;
+ hsize = BIT(dip->i_depth);
hsize_bytes = hsize * sizeof(__be64);

hc = gfs2_dir_get_hash_table(dip);
@@ -1539,7 +1539,7 @@ static int dir_e_read(struct inode *inode, struct dir_context *ctx,
int error = 0;
unsigned depth = 0;

- hsize = 1 << dip->i_depth;
+ hsize = BIT(dip->i_depth);
hash = gfs2_dir_offset2hash(ctx->pos);
index = hash >> (32 - dip->i_depth);

@@ -1558,7 +1558,7 @@ static int dir_e_read(struct inode *inode, struct dir_context *ctx,
if (error)
break;

- len = 1 << (dip->i_depth - depth);
+ len = BIT(dip->i_depth - depth);
index = (index & ~(len - 1)) + len;
}

@@ -2113,7 +2113,7 @@ int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip)
u64 leaf_no;
int error = 0, last;

- hsize = 1 << dip->i_depth;
+ hsize = BIT(dip->i_depth);

lp = gfs2_dir_get_hash_table(dip);
if (IS_ERR(lp))
@@ -2126,7 +2126,7 @@ int gfs2_dir_exhash_dealloc(struct gfs2_inode *dip)
if (error)
goto out;
leaf = (struct gfs2_leaf *)bh->b_data;
- len = 1 << (dip->i_depth - be16_to_cpu(leaf->lf_depth));
+ len = BIT(dip->i_depth - be16_to_cpu(leaf->lf_depth));

next_index = (index & ~(len - 1)) + len;
last = ((next_index >= hsize) ? 1 : 0);
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index 3a90b2b..c8e2e7f 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -69,7 +69,7 @@ static atomic_t lru_count = ATOMIC_INIT(0);
static DEFINE_SPINLOCK(lru_lock);

#define GFS2_GL_HASH_SHIFT 15
-#define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
+#define GFS2_GL_HASH_SIZE BIT(GFS2_GL_HASH_SHIFT)

static struct rhashtable_params ht_parms = {
.nelem_hint = GFS2_GL_HASH_SIZE * 3 / 4,
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 7710dfd..aace8ce 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -85,7 +85,7 @@ static inline int gfs2_check_internal_file_size(struct inode *inode,
u64 size = i_size_read(inode);
if (size < minsize || size > maxsize)
goto err;
- if (size & ((1 << inode->i_blkbits) - 1))
+ if (size & (BIT(inode->i_blkbits) - 1))
goto err;
return 0;
err:
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index ef1e182..ff72ac6 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -58,7 +58,7 @@ static void gfs2_tune_init(struct gfs2_tune *gt)
gt->gt_quota_scale_num = 1;
gt->gt_quota_scale_den = 1;
gt->gt_new_files_jdata = 0;
- gt->gt_max_readahead = 1 << 18;
+ gt->gt_max_readahead = BIT(18);
gt->gt_complain_secs = 10;
}

@@ -284,7 +284,7 @@ static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent)

sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
GFS2_BASIC_BLOCK_SHIFT;
- sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
+ sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift);
sdp->sd_diptrs = (sdp->sd_sb.sb_bsize -
sizeof(struct gfs2_dinode)) / sizeof(u64);
sdp->sd_inptrs = (sdp->sd_sb.sb_bsize -
@@ -302,7 +302,7 @@ static int gfs2_read_sb(struct gfs2_sbd *sdp, int silent)

/* Compute maximum reservation required to add a entry to a directory */

- hash_blocks = DIV_ROUND_UP(sizeof(u64) * (1 << GFS2_DIR_MAX_DEPTH),
+ hash_blocks = DIV_ROUND_UP(sizeof(u64) * BIT(GFS2_DIR_MAX_DEPTH),
sdp->sd_jbsize);

ind_blocks = 0;
@@ -1089,7 +1089,7 @@ static int fill_super(struct super_block *sb, struct gfs2_args *args, int silent
sdp->sd_sb.sb_bsize_shift = sb->s_blocksize_bits;
sdp->sd_fsb2bb_shift = sdp->sd_sb.sb_bsize_shift -
GFS2_BASIC_BLOCK_SHIFT;
- sdp->sd_fsb2bb = 1 << sdp->sd_fsb2bb_shift;
+ sdp->sd_fsb2bb = BIT(sdp->sd_fsb2bb_shift);

sdp->sd_tune.gt_logd_secs = sdp->sd_args.ar_commit;
sdp->sd_tune.gt_quota_quantum = sdp->sd_args.ar_quota_quantum;
diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 77930ca..8af2dfa 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -75,7 +75,7 @@
#include "util.h"

#define GFS2_QD_HASH_SHIFT 12
-#define GFS2_QD_HASH_SIZE (1 << GFS2_QD_HASH_SHIFT)
+#define GFS2_QD_HASH_SIZE BIT(GFS2_QD_HASH_SHIFT)
#define GFS2_QD_HASH_MASK (GFS2_QD_HASH_SIZE - 1)

/* Lock order: qd_lock -> bucket lock -> qd->lockref.lock -> lru lock */
@@ -384,7 +384,7 @@ static int bh_get(struct gfs2_quota_data *qd)
block = qd->qd_slot / sdp->sd_qc_per_block;
offset = qd->qd_slot % sdp->sd_qc_per_block;

- bh_map.b_size = 1 << ip->i_inode.i_blkbits;
+ bh_map.b_size = BIT(ip->i_inode.i_blkbits);
error = gfs2_block_map(&ip->i_inode, block, &bh_map, 0);
if (error)
goto fail;
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 3a7e60b..e3ee387 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -359,7 +359,7 @@ int gfs2_jdesc_check(struct gfs2_jdesc *jd)
struct gfs2_sbd *sdp = GFS2_SB(jd->jd_inode);
u64 size = i_size_read(jd->jd_inode);

- if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, 1 << 30))
+ if (gfs2_check_internal_file_size(jd->jd_inode, 8 << 20, BIT(30)))
return -EIO;

jd->jd_blocks = size >> sdp->sd_sb.sb_bsize_shift;
--
2.8.1

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