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fs: have ll_rw_block users pass in op and flags separately 

This has ll_rw_block users pass in the operation and flags separately,
so ll_rw_block can setup the bio op and bi_rw flags on the bio that
is submitted.

Signed-off-by: Mike Christie <mchristi@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Mike Christie 2016-06-05 14:31:44 -05:00 committed by Jens Axboe
parent 2a222ca992
commit dfec8a14fc
21 changed files with 40 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
fs/buffer.c
View File

@ -588,7 +588,7 @@ void write_boundary_block(struct block_device *bdev,
struct buffer_head *bh = __find_get_block(bdev, bblock + 1, blocksize);
if (bh) {
if (buffer_dirty(bh))
ll_rw_block(WRITE, 1, &bh);
ll_rw_block(REQ_OP_WRITE, 0, 1, &bh);
put_bh(bh);
}
}
@ -1395,7 +1395,7 @@ void __breadahead(struct block_device *bdev, sector_t block, unsigned size)
{
struct buffer_head *bh = __getblk(bdev, block, size);
if (likely(bh)) {
ll_rw_block(READA, 1, &bh);
ll_rw_block(REQ_OP_READ, READA, 1, &bh);
brelse(bh);
}
}
@ -1955,7 +1955,7 @@ int __block_write_begin(struct page *page, loff_t pos, unsigned len,
if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
!buffer_unwritten(bh) &&
(block_start < from || block_end > to)) {
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
*wait_bh++=bh;
}
}
@ -2852,7 +2852,7 @@ int block_truncate_page(struct address_space *mapping,
if (!buffer_uptodate(bh) && !buffer_delay(bh) && !buffer_unwritten(bh)) {
err = -EIO;
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))
@ -3051,7 +3051,8 @@ EXPORT_SYMBOL(submit_bh);
/**
* ll_rw_block: low-level access to block devices (DEPRECATED)
* @rw: whether to %READ or %WRITE or maybe %READA (readahead)
* @op: whether to %READ or %WRITE
* @op_flags: rq_flag_bits or %READA (readahead)
* @nr: number of &struct buffer_heads in the array
* @bhs: array of pointers to &struct buffer_head
*
@ -3074,7 +3075,7 @@ EXPORT_SYMBOL(submit_bh);
* All of the buffers must be for the same device, and must also be a
* multiple of the current approved size for the device.
*/
void ll_rw_block(int rw, int nr, struct buffer_head *bhs[])
void ll_rw_block(int op, int op_flags, int nr, struct buffer_head *bhs[])
{
int i;
@ -3083,18 +3084,18 @@ void ll_rw_block(int rw, int nr, struct buffer_head *bhs[])
if (!trylock_buffer(bh))
continue;
if (rw == WRITE) {
if (op == WRITE) {
if (test_clear_buffer_dirty(bh)) {
bh->b_end_io = end_buffer_write_sync;
get_bh(bh);
submit_bh(rw, 0, bh);
submit_bh(op, op_flags, bh);
continue;
}
} else {
if (!buffer_uptodate(bh)) {
bh->b_end_io = end_buffer_read_sync;
get_bh(bh);
submit_bh(rw, 0, bh);
submit_bh(op, op_flags, bh);
continue;
}
}

6
fs/ext4/inode.c
View File

@ -981,7 +981,7 @@ struct buffer_head *ext4_bread(handle_t *handle, struct inode *inode,
return bh;
if (!bh || buffer_uptodate(bh))
return bh;
ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh);
ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))
return bh;
@ -1135,7 +1135,7 @@ static int ext4_block_write_begin(struct page *page, loff_t pos, unsigned len,
if (!buffer_uptodate(bh) && !buffer_delay(bh) &&
!buffer_unwritten(bh) &&
(block_start < from || block_end > to)) {
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
*wait_bh++ = bh;
decrypt = ext4_encrypted_inode(inode) &&
S_ISREG(inode->i_mode);
@ -3698,7 +3698,7 @@ static int __ext4_block_zero_page_range(handle_t *handle,
if (!buffer_uptodate(bh)) {
err = -EIO;
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))

3
fs/ext4/namei.c
View File

@ -1443,7 +1443,8 @@ restart:
}
bh_use[ra_max] = bh;
if (bh)
ll_rw_block(READ | REQ_META | REQ_PRIO,
ll_rw_block(REQ_OP_READ,
REQ_META | REQ_PRIO,
1, &bh);
}
}

2
fs/ext4/super.c
View File

@ -4204,7 +4204,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
goto out_bdev;
}
journal->j_private = sb;
ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &journal->j_sb_buffer);
ll_rw_block(REQ_OP_READ, REQ_META | REQ_PRIO, 1, &journal->j_sb_buffer);
wait_on_buffer(journal->j_sb_buffer);
if (!buffer_uptodate(journal->j_sb_buffer)) {
ext4_msg(sb, KERN_ERR, "I/O error on journal device");

2
fs/gfs2/bmap.c
View File

@ -974,7 +974,7 @@ static int gfs2_block_truncate_page(struct address_space *mapping, loff_t from)
if (!buffer_uptodate(bh)) {
err = -EIO;
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
/* Uhhuh. Read error. Complain and punt. */
if (!buffer_uptodate(bh))

4
fs/gfs2/meta_io.c
View File

@ -449,7 +449,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen)
if (buffer_uptodate(first_bh))
goto out;
if (!buffer_locked(first_bh))
ll_rw_block(READ_SYNC | REQ_META, 1, &first_bh);
ll_rw_block(REQ_OP_READ, READ_SYNC | REQ_META, 1, &first_bh);
dblock++;
extlen--;
@ -458,7 +458,7 @@ struct buffer_head *gfs2_meta_ra(struct gfs2_glock *gl, u64 dblock, u32 extlen)
bh = gfs2_getbuf(gl, dblock, CREATE);
if (!buffer_uptodate(bh) && !buffer_locked(bh))
ll_rw_block(READA | REQ_META, 1, &bh);
ll_rw_block(REQ_OP_READ, READA | REQ_META, 1, &bh);
brelse(bh);
dblock++;
extlen--;

2
fs/gfs2/quota.c
View File

@ -730,7 +730,7 @@ static int gfs2_write_buf_to_page(struct gfs2_inode *ip, unsigned long index,
if (PageUptodate(page))
set_buffer_uptodate(bh);
if (!buffer_uptodate(bh)) {
ll_rw_block(READ | REQ_META, 1, &bh);
ll_rw_block(REQ_OP_READ, REQ_META, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh))
goto unlock_out;

2
fs/isofs/compress.c
View File

@ -81,7 +81,7 @@ static loff_t zisofs_uncompress_block(struct inode *inode, loff_t block_start,
blocknum = block_start >> bufshift;
memset(bhs, 0, (needblocks + 1) * sizeof(struct buffer_head *));
haveblocks = isofs_get_blocks(inode, blocknum, bhs, needblocks);
ll_rw_block(READ, haveblocks, bhs);
ll_rw_block(REQ_OP_READ, 0, haveblocks, bhs);
curbh = 0;
curpage = 0;

2
fs/jbd2/journal.c
View File

@ -1498,7 +1498,7 @@ static int journal_get_superblock(journal_t *journal)
J_ASSERT(bh != NULL);
if (!buffer_uptodate(bh)) {
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
printk(KERN_ERR

4
fs/jbd2/recovery.c
View File

@ -104,7 +104,7 @@ static int do_readahead(journal_t *journal, unsigned int start)
if (!buffer_uptodate(bh) && !buffer_locked(bh)) {
bufs[nbufs++] = bh;
if (nbufs == MAXBUF) {
ll_rw_block(READ, nbufs, bufs);
ll_rw_block(REQ_OP_READ, 0, nbufs, bufs);
journal_brelse_array(bufs, nbufs);
nbufs = 0;
}
@ -113,7 +113,7 @@ static int do_readahead(journal_t *journal, unsigned int start)
}
if (nbufs)
ll_rw_block(READ, nbufs, bufs);
ll_rw_block(REQ_OP_READ, 0, nbufs, bufs);
err = 0;
failed:

2
fs/ocfs2/aops.c
View File

@ -640,7 +640,7 @@ int ocfs2_map_page_blocks(struct page *page, u64 *p_blkno,
!buffer_new(bh) &&
ocfs2_should_read_blk(inode, page, block_start) &&
(block_start < from || block_end > to)) {
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
*wait_bh++=bh;
}

2
fs/ocfs2/super.c
View File

@ -1819,7 +1819,7 @@ static int ocfs2_get_sector(struct super_block *sb,
if (!buffer_dirty(*bh))
clear_buffer_uptodate(*bh);
unlock_buffer(*bh);
ll_rw_block(READ, 1, bh);
ll_rw_block(REQ_OP_READ, 0, 1, bh);
wait_on_buffer(*bh);
if (!buffer_uptodate(*bh)) {
mlog_errno(-EIO);

8
fs/reiserfs/journal.c
View File

@ -870,7 +870,7 @@ loop_next:
*/
if (buffer_dirty(bh) && unlikely(bh->b_page->mapping == NULL)) {
spin_unlock(lock);
ll_rw_block(WRITE, 1, &bh);
ll_rw_block(REQ_OP_WRITE, 0, 1, &bh);
spin_lock(lock);
}
put_bh(bh);
@ -1057,7 +1057,7 @@ static int flush_commit_list(struct super_block *s,
if (tbh) {
if (buffer_dirty(tbh)) {
depth = reiserfs_write_unlock_nested(s);
ll_rw_block(WRITE, 1, &tbh);
ll_rw_block(REQ_OP_WRITE, 0, 1, &tbh);
reiserfs_write_lock_nested(s, depth);
}
put_bh(tbh) ;
@ -2244,7 +2244,7 @@ abort_replay:
}
}
/* read in the log blocks, memcpy to the corresponding real block */
ll_rw_block(READ, get_desc_trans_len(desc), log_blocks);
ll_rw_block(REQ_OP_READ, 0, get_desc_trans_len(desc), log_blocks);
for (i = 0; i < get_desc_trans_len(desc); i++) {
wait_on_buffer(log_blocks[i]);
@ -2346,7 +2346,7 @@ static struct buffer_head *reiserfs_breada(struct block_device *dev,
} else
bhlist[j++] = bh;
}
ll_rw_block(READ, j, bhlist);
ll_rw_block(REQ_OP_READ, 0, j, bhlist);
for (i = 1; i < j; i++)
brelse(bhlist[i]);
bh = bhlist[0];

4
fs/reiserfs/stree.c
View File

@ -551,7 +551,7 @@ static int search_by_key_reada(struct super_block *s,
if (!buffer_uptodate(bh[j])) {
if (depth == -1)
depth = reiserfs_write_unlock_nested(s);
ll_rw_block(READA, 1, bh + j);
ll_rw_block(REQ_OP_READ, READA, 1, bh + j);
}
brelse(bh[j]);
}
@ -660,7 +660,7 @@ int search_by_key(struct super_block *sb, const struct cpu_key *key,
if (!buffer_uptodate(bh) && depth == -1)
depth = reiserfs_write_unlock_nested(sb);
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (depth != -1)

2
fs/reiserfs/super.c
View File

@ -1661,7 +1661,7 @@ static int read_super_block(struct super_block *s, int offset)
/* after journal replay, reread all bitmap and super blocks */
static int reread_meta_blocks(struct super_block *s)
{
ll_rw_block(READ, 1, &SB_BUFFER_WITH_SB(s));
ll_rw_block(REQ_OP_READ, 0, 1, &SB_BUFFER_WITH_SB(s));
wait_on_buffer(SB_BUFFER_WITH_SB(s));
if (!buffer_uptodate(SB_BUFFER_WITH_SB(s))) {
reiserfs_warning(s, "reiserfs-2504", "error reading the super");

4
fs/squashfs/block.c
View File

@ -124,7 +124,7 @@ int squashfs_read_data(struct super_block *sb, u64 index, int length,
goto block_release;
bytes += msblk->devblksize;
}
ll_rw_block(READ, b, bh);
ll_rw_block(REQ_OP_READ, 0, b, bh);
} else {
/*
* Metadata block.
@ -156,7 +156,7 @@ int squashfs_read_data(struct super_block *sb, u64 index, int length,
goto block_release;
bytes += msblk->devblksize;
}
ll_rw_block(READ, b - 1, bh + 1);
ll_rw_block(REQ_OP_READ, 0, b - 1, bh + 1);
}
for (i = 0; i < b; i++) {

2
fs/udf/dir.c
View File

@ -113,7 +113,7 @@ static int udf_readdir(struct file *file, struct dir_context *ctx)
brelse(tmp);
}
if (num) {
ll_rw_block(READA, num, bha);
ll_rw_block(REQ_OP_READ, READA, num, bha);
for (i = 0; i < num; i++)
brelse(bha[i]);
}

2
fs/udf/directory.c
View File

@ -87,7 +87,7 @@ struct fileIdentDesc *udf_fileident_read(struct inode *dir, loff_t *nf_pos,
brelse(tmp);
}
if (num) {
ll_rw_block(READA, num, bha);
ll_rw_block(REQ_OP_READ, READA, num, bha);
for (i = 0; i < num; i++)
brelse(bha[i]);
}

2
fs/udf/inode.c
View File

@ -1199,7 +1199,7 @@ struct buffer_head *udf_bread(struct inode *inode, int block,
if (buffer_uptodate(bh))
return bh;
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (buffer_uptodate(bh))

2
fs/ufs/balloc.c
View File

@ -292,7 +292,7 @@ static void ufs_change_blocknr(struct inode *inode, sector_t beg,
if (!buffer_mapped(bh))
map_bh(bh, inode->i_sb, oldb + pos);
if (!buffer_uptodate(bh)) {
ll_rw_block(READ, 1, &bh);
ll_rw_block(REQ_OP_READ, 0, 1, &bh);
wait_on_buffer(bh);
if (!buffer_uptodate(bh)) {
ufs_error(inode->i_sb, __func__,

2
include/linux/buffer_head.h
View File

@ -187,7 +187,7 @@ struct buffer_head *alloc_buffer_head(gfp_t gfp_flags);
void free_buffer_head(struct buffer_head * bh);
void unlock_buffer(struct buffer_head *bh);
void __lock_buffer(struct buffer_head *bh);
void ll_rw_block(int, int, struct buffer_head * bh[]);
void ll_rw_block(int, int, int, struct buffer_head * bh[]);
int sync_dirty_buffer(struct buffer_head *bh);
int __sync_dirty_buffer(struct buffer_head *bh, int op_flags);
void write_dirty_buffer(struct buffer_head *bh, int op_flags);