From: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> Subject: nilfs2: use BIT() macro Replace bit shifts by BIT macro for clarity. Link: http://lkml.kernel.org/r/1465825507-3407-3-git-send-email-konishi.ryusuke@xxxxxxxxxxxxx Signed-off-by: Ryusuke Konishi <konishi.ryusuke@xxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/nilfs2/btnode.c | 4 ++-- fs/nilfs2/inode.c | 4 ++-- fs/nilfs2/nilfs.h | 15 +++++++-------- fs/nilfs2/page.c | 26 +++++++++++++------------- fs/nilfs2/segment.c | 14 +++++++------- fs/nilfs2/sufile.c | 12 ++++++------ 6 files changed, 37 insertions(+), 38 deletions(-) diff -puN fs/nilfs2/btnode.c~nilfs2-use-bit-macro fs/nilfs2/btnode.c --- a/fs/nilfs2/btnode.c~nilfs2-use-bit-macro +++ a/fs/nilfs2/btnode.c @@ -41,7 +41,7 @@ nilfs_btnode_create_block(struct address struct inode *inode = NILFS_BTNC_I(btnc); struct buffer_head *bh; - bh = nilfs_grab_buffer(inode, btnc, blocknr, 1 << BH_NILFS_Node); + bh = nilfs_grab_buffer(inode, btnc, blocknr, BIT(BH_NILFS_Node)); if (unlikely(!bh)) return NULL; @@ -70,7 +70,7 @@ int nilfs_btnode_submit_block(struct add struct page *page; int err; - bh = nilfs_grab_buffer(inode, btnc, blocknr, 1 << BH_NILFS_Node); + bh = nilfs_grab_buffer(inode, btnc, blocknr, BIT(BH_NILFS_Node)); if (unlikely(!bh)) return -ENOMEM; diff -puN fs/nilfs2/inode.c~nilfs2-use-bit-macro fs/nilfs2/inode.c --- a/fs/nilfs2/inode.c~nilfs2-use-bit-macro +++ a/fs/nilfs2/inode.c @@ -356,7 +356,7 @@ struct inode *nilfs_new_inode(struct ino root = NILFS_I(dir)->i_root; ii = NILFS_I(inode); - ii->i_state = 1 << NILFS_I_NEW; + ii->i_state = BIT(NILFS_I_NEW); ii->i_root = root; err = nilfs_ifile_create_inode(root->ifile, &ino, &ii->i_bh); @@ -555,7 +555,7 @@ static int nilfs_iget_set(struct inode * inode->i_ino = args->ino; if (args->for_gc) { - NILFS_I(inode)->i_state = 1 << NILFS_I_GCINODE; + NILFS_I(inode)->i_state = BIT(NILFS_I_GCINODE); NILFS_I(inode)->i_cno = args->cno; NILFS_I(inode)->i_root = NULL; } else { diff -puN fs/nilfs2/nilfs.h~nilfs2-use-bit-macro fs/nilfs2/nilfs.h --- a/fs/nilfs2/nilfs.h~nilfs2-use-bit-macro +++ a/fs/nilfs2/nilfs.h @@ -119,20 +119,19 @@ enum { /* * Macros to check inode numbers */ -#define NILFS_MDT_INO_BITS \ - ((unsigned int)(1 << NILFS_DAT_INO | 1 << NILFS_CPFILE_INO | \ - 1 << NILFS_SUFILE_INO | 1 << NILFS_IFILE_INO | \ - 1 << NILFS_ATIME_INO | 1 << NILFS_SKETCH_INO)) +#define NILFS_MDT_INO_BITS \ + (BIT(NILFS_DAT_INO) | BIT(NILFS_CPFILE_INO) | \ + BIT(NILFS_SUFILE_INO) | BIT(NILFS_IFILE_INO) | \ + BIT(NILFS_ATIME_INO) | BIT(NILFS_SKETCH_INO)) -#define NILFS_SYS_INO_BITS \ - ((unsigned int)(1 << NILFS_ROOT_INO) | NILFS_MDT_INO_BITS) +#define NILFS_SYS_INO_BITS (BIT(NILFS_ROOT_INO) | NILFS_MDT_INO_BITS) #define NILFS_FIRST_INO(sb) (((struct the_nilfs *)sb->s_fs_info)->ns_first_ino) #define NILFS_MDT_INODE(sb, ino) \ - ((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & (1 << (ino)))) + ((ino) < NILFS_FIRST_INO(sb) && (NILFS_MDT_INO_BITS & BIT(ino))) #define NILFS_VALID_INODE(sb, ino) \ - ((ino) >= NILFS_FIRST_INO(sb) || (NILFS_SYS_INO_BITS & (1 << (ino)))) + ((ino) >= NILFS_FIRST_INO(sb) || (NILFS_SYS_INO_BITS & BIT(ino))) /** * struct nilfs_transaction_info: context information for synchronization diff -puN fs/nilfs2/page.c~nilfs2-use-bit-macro fs/nilfs2/page.c --- a/fs/nilfs2/page.c~nilfs2-use-bit-macro +++ a/fs/nilfs2/page.c @@ -30,9 +30,9 @@ #include "mdt.h" -#define NILFS_BUFFER_INHERENT_BITS \ - ((1UL << BH_Uptodate) | (1UL << BH_Mapped) | (1UL << BH_NILFS_Node) | \ - (1UL << BH_NILFS_Volatile) | (1UL << BH_NILFS_Checked)) +#define NILFS_BUFFER_INHERENT_BITS \ + (BIT(BH_Uptodate) | BIT(BH_Mapped) | BIT(BH_NILFS_Node) | \ + BIT(BH_NILFS_Volatile) | BIT(BH_NILFS_Checked)) static struct buffer_head * __nilfs_get_page_block(struct page *page, unsigned long block, pgoff_t index, @@ -85,9 +85,9 @@ void nilfs_forget_buffer(struct buffer_h { struct page *page = bh->b_page; const unsigned long clear_bits = - (1 << BH_Uptodate | 1 << BH_Dirty | 1 << BH_Mapped | - 1 << BH_Async_Write | 1 << BH_NILFS_Volatile | - 1 << BH_NILFS_Checked | 1 << BH_NILFS_Redirected); + (BIT(BH_Uptodate) | BIT(BH_Dirty) | BIT(BH_Mapped) | + BIT(BH_Async_Write) | BIT(BH_NILFS_Volatile) | + BIT(BH_NILFS_Checked) | BIT(BH_NILFS_Redirected)); lock_buffer(bh); set_mask_bits(&bh->b_state, clear_bits, 0); @@ -124,17 +124,17 @@ void nilfs_copy_buffer(struct buffer_hea dbh->b_bdev = sbh->b_bdev; bh = dbh; - bits = sbh->b_state & ((1UL << BH_Uptodate) | (1UL << BH_Mapped)); + bits = sbh->b_state & (BIT(BH_Uptodate) | BIT(BH_Mapped)); while ((bh = bh->b_this_page) != dbh) { lock_buffer(bh); bits &= bh->b_state; unlock_buffer(bh); } - if (bits & (1UL << BH_Uptodate)) + if (bits & BIT(BH_Uptodate)) SetPageUptodate(dpage); else ClearPageUptodate(dpage); - if (bits & (1UL << BH_Mapped)) + if (bits & BIT(BH_Mapped)) SetPageMappedToDisk(dpage); else ClearPageMappedToDisk(dpage); @@ -215,7 +215,7 @@ static void nilfs_copy_page(struct page create_empty_buffers(dst, sbh->b_size, 0); if (copy_dirty) - mask |= (1UL << BH_Dirty); + mask |= BIT(BH_Dirty); dbh = dbufs = page_buffers(dst); do { @@ -414,9 +414,9 @@ void nilfs_clear_dirty_page(struct page if (page_has_buffers(page)) { struct buffer_head *bh, *head; const unsigned long clear_bits = - (1 << BH_Uptodate | 1 << BH_Dirty | 1 << BH_Mapped | - 1 << BH_Async_Write | 1 << BH_NILFS_Volatile | - 1 << BH_NILFS_Checked | 1 << BH_NILFS_Redirected); + (BIT(BH_Uptodate) | BIT(BH_Dirty) | BIT(BH_Mapped) | + BIT(BH_Async_Write) | BIT(BH_NILFS_Volatile) | + BIT(BH_NILFS_Checked) | BIT(BH_NILFS_Redirected)); bh = head = page_buffers(page); do { diff -puN fs/nilfs2/segment.c~nilfs2-use-bit-macro fs/nilfs2/segment.c --- a/fs/nilfs2/segment.c~nilfs2-use-bit-macro +++ a/fs/nilfs2/segment.c @@ -1858,11 +1858,11 @@ static void nilfs_segctor_complete_write */ list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) { - const unsigned long set_bits = (1 << BH_Uptodate); + const unsigned long set_bits = BIT(BH_Uptodate); const unsigned long clear_bits = - (1 << BH_Dirty | 1 << BH_Async_Write | - 1 << BH_Delay | 1 << BH_NILFS_Volatile | - 1 << BH_NILFS_Redirected); + (BIT(BH_Dirty) | BIT(BH_Async_Write) | + BIT(BH_Delay) | BIT(BH_NILFS_Volatile) | + BIT(BH_NILFS_Redirected)); set_mask_bits(&bh->b_state, clear_bits, set_bits); if (bh == segbuf->sb_super_root) { @@ -2132,10 +2132,10 @@ static void nilfs_segctor_start_timer(st static void nilfs_segctor_do_flush(struct nilfs_sc_info *sci, int bn) { spin_lock(&sci->sc_state_lock); - if (!(sci->sc_flush_request & (1 << bn))) { + if (!(sci->sc_flush_request & BIT(bn))) { unsigned long prev_req = sci->sc_flush_request; - sci->sc_flush_request |= (1 << bn); + sci->sc_flush_request |= BIT(bn); if (!prev_req) wake_up(&sci->sc_wait_daemon); } @@ -2319,7 +2319,7 @@ int nilfs_construct_dsync_segment(struct } #define FLUSH_FILE_BIT (0x1) /* data file only */ -#define FLUSH_DAT_BIT (1 << NILFS_DAT_INO) /* DAT only */ +#define FLUSH_DAT_BIT BIT(NILFS_DAT_INO) /* DAT only */ /** * nilfs_segctor_accept - record accepted sequence count of log-write requests diff -puN fs/nilfs2/sufile.c~nilfs2-use-bit-macro fs/nilfs2/sufile.c --- a/fs/nilfs2/sufile.c~nilfs2-use-bit-macro +++ a/fs/nilfs2/sufile.c @@ -446,7 +446,7 @@ void nilfs_sufile_do_scrap(struct inode kaddr = kmap_atomic(su_bh->b_page); su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr); - if (su->su_flags == cpu_to_le32(1UL << NILFS_SEGMENT_USAGE_DIRTY) && + if (su->su_flags == cpu_to_le32(BIT(NILFS_SEGMENT_USAGE_DIRTY)) && su->su_nblocks == cpu_to_le32(0)) { kunmap_atomic(kaddr); return; @@ -457,7 +457,7 @@ void nilfs_sufile_do_scrap(struct inode /* make the segment garbage */ su->su_lastmod = cpu_to_le64(0); su->su_nblocks = cpu_to_le32(0); - su->su_flags = cpu_to_le32(1UL << NILFS_SEGMENT_USAGE_DIRTY); + su->su_flags = cpu_to_le32(BIT(NILFS_SEGMENT_USAGE_DIRTY)); kunmap_atomic(kaddr); nilfs_sufile_mod_counter(header_bh, clean ? (u64)-1 : 0, dirty ? 0 : 1); @@ -695,7 +695,7 @@ static int nilfs_sufile_truncate_range(s su2 = su; for (j = 0; j < n; j++, su = (void *)su + susz) { if ((le32_to_cpu(su->su_flags) & - ~(1UL << NILFS_SEGMENT_USAGE_ERROR)) || + ~BIT(NILFS_SEGMENT_USAGE_ERROR)) || nilfs_segment_is_active(nilfs, segnum + j)) { ret = -EBUSY; kunmap_atomic(kaddr); @@ -862,10 +862,10 @@ ssize_t nilfs_sufile_get_suinfo(struct i si->sui_lastmod = le64_to_cpu(su->su_lastmod); si->sui_nblocks = le32_to_cpu(su->su_nblocks); si->sui_flags = le32_to_cpu(su->su_flags) & - ~(1UL << NILFS_SEGMENT_USAGE_ACTIVE); + ~BIT(NILFS_SEGMENT_USAGE_ACTIVE); if (nilfs_segment_is_active(nilfs, segnum + j)) si->sui_flags |= - (1UL << NILFS_SEGMENT_USAGE_ACTIVE); + BIT(NILFS_SEGMENT_USAGE_ACTIVE); } kunmap_atomic(kaddr); brelse(su_bh); @@ -953,7 +953,7 @@ ssize_t nilfs_sufile_set_suinfo(struct i * disk. */ sup->sup_sui.sui_flags &= - ~(1UL << NILFS_SEGMENT_USAGE_ACTIVE); + ~BIT(NILFS_SEGMENT_USAGE_ACTIVE); cleansi = nilfs_suinfo_clean(&sup->sup_sui); cleansu = nilfs_segment_usage_clean(su); _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
