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Date: Tue, 29 Nov 2011 01:14:34 +0900 (JST)
From: Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
To: amwang@...hat.com
Cc: linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
linux-nilfs@...r.kernel.org
Subject: Re: [PATCH 42/62] nilfs2: remove the second argument of
k[un]map_atomic()
On Sun, 27 Nov 2011 13:27:22 +0800, Cong Wang wrote:
>
> Signed-off-by: Cong Wang <amwang@...hat.com>
Acked-by: Ryusuke Konishi <konishi.ryusuke@....ntt.co.jp>
Regards,
Ryusuke Konishi
> ---
> fs/nilfs2/cpfile.c | 94 +++++++++++++++++++++++++-------------------------
> fs/nilfs2/dat.c | 38 ++++++++++----------
> fs/nilfs2/dir.c | 4 +-
> fs/nilfs2/ifile.c | 4 +-
> fs/nilfs2/mdt.c | 4 +-
> fs/nilfs2/page.c | 8 ++--
> fs/nilfs2/recovery.c | 4 +-
> fs/nilfs2/segbuf.c | 4 +-
> fs/nilfs2/sufile.c | 68 ++++++++++++++++++------------------
> 9 files changed, 114 insertions(+), 114 deletions(-)
>
> diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
> index c9b342c..dab5c4c 100644
> --- a/fs/nilfs2/cpfile.c
> +++ b/fs/nilfs2/cpfile.c
> @@ -218,11 +218,11 @@ int nilfs_cpfile_get_checkpoint(struct inode *cpfile,
> kaddr, 1);
> mark_buffer_dirty(cp_bh);
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, header_bh,
> kaddr);
> le64_add_cpu(&header->ch_ncheckpoints, 1);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> mark_buffer_dirty(header_bh);
> nilfs_mdt_mark_dirty(cpfile);
> }
> @@ -313,7 +313,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
> continue;
> }
>
> - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(cp_bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(
> cpfile, cno, cp_bh, kaddr);
> nicps = 0;
> @@ -334,7 +334,7 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
> cpfile, cp_bh, kaddr, nicps);
> if (count == 0) {
> /* make hole */
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(cp_bh);
> ret =
> nilfs_cpfile_delete_checkpoint_block(
> @@ -349,18 +349,18 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
> }
> }
>
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(cp_bh);
> }
>
> if (tnicps > 0) {
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, header_bh,
> kaddr);
> le64_add_cpu(&header->ch_ncheckpoints, -(u64)tnicps);
> mark_buffer_dirty(header_bh);
> nilfs_mdt_mark_dirty(cpfile);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> }
>
> brelse(header_bh);
> @@ -408,7 +408,7 @@ static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop,
> continue; /* skip hole */
> }
>
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
> for (i = 0; i < ncps && n < nci; i++, cp = (void *)cp + cpsz) {
> if (!nilfs_checkpoint_invalid(cp)) {
> @@ -418,7 +418,7 @@ static ssize_t nilfs_cpfile_do_get_cpinfo(struct inode *cpfile, __u64 *cnop,
> n++;
> }
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh);
> }
>
> @@ -451,10 +451,10 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
> ret = nilfs_cpfile_get_header_block(cpfile, &bh);
> if (ret < 0)
> goto out;
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
> curr = le64_to_cpu(header->ch_snapshot_list.ssl_next);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh);
> if (curr == 0) {
> ret = 0;
> @@ -472,7 +472,7 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
> ret = 0; /* No snapshots (started from a hole block) */
> goto out;
> }
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> while (n < nci) {
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, curr, bh, kaddr);
> curr = ~(__u64)0; /* Terminator */
> @@ -488,7 +488,7 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
>
> next_blkoff = nilfs_cpfile_get_blkoff(cpfile, next);
> if (curr_blkoff != next_blkoff) {
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh);
> ret = nilfs_cpfile_get_checkpoint_block(cpfile, next,
> 0, &bh);
> @@ -496,12 +496,12 @@ static ssize_t nilfs_cpfile_do_get_ssinfo(struct inode *cpfile, __u64 *cnop,
> WARN_ON(ret == -ENOENT);
> goto out;
> }
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> }
> curr = next;
> curr_blkoff = next_blkoff;
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh);
> *cnop = curr;
> ret = n;
> @@ -592,24 +592,24 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
> ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
> if (ret < 0)
> goto out_sem;
> - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(cp_bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
> if (nilfs_checkpoint_invalid(cp)) {
> ret = -ENOENT;
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> goto out_cp;
> }
> if (nilfs_checkpoint_snapshot(cp)) {
> ret = 0;
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> goto out_cp;
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
> if (ret < 0)
> goto out_cp;
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
> list = &header->ch_snapshot_list;
> curr_bh = header_bh;
> @@ -621,13 +621,13 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
> prev_blkoff = nilfs_cpfile_get_blkoff(cpfile, prev);
> curr = prev;
> if (curr_blkoff != prev_blkoff) {
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(curr_bh);
> ret = nilfs_cpfile_get_checkpoint_block(cpfile, curr,
> 0, &curr_bh);
> if (ret < 0)
> goto out_header;
> - kaddr = kmap_atomic(curr_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(curr_bh->b_page);
> }
> curr_blkoff = prev_blkoff;
> cp = nilfs_cpfile_block_get_checkpoint(
> @@ -635,7 +635,7 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
> list = &cp->cp_snapshot_list;
> prev = le64_to_cpu(list->ssl_prev);
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> if (prev != 0) {
> ret = nilfs_cpfile_get_checkpoint_block(cpfile, prev, 0,
> @@ -647,29 +647,29 @@ static int nilfs_cpfile_set_snapshot(struct inode *cpfile, __u64 cno)
> get_bh(prev_bh);
> }
>
> - kaddr = kmap_atomic(curr_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(curr_bh->b_page);
> list = nilfs_cpfile_block_get_snapshot_list(
> cpfile, curr, curr_bh, kaddr);
> list->ssl_prev = cpu_to_le64(cno);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(cp_bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
> cp->cp_snapshot_list.ssl_next = cpu_to_le64(curr);
> cp->cp_snapshot_list.ssl_prev = cpu_to_le64(prev);
> nilfs_checkpoint_set_snapshot(cp);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(prev_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(prev_bh->b_page);
> list = nilfs_cpfile_block_get_snapshot_list(
> cpfile, prev, prev_bh, kaddr);
> list->ssl_next = cpu_to_le64(cno);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
> le64_add_cpu(&header->ch_nsnapshots, 1);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(prev_bh);
> mark_buffer_dirty(curr_bh);
> @@ -710,23 +710,23 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
> ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &cp_bh);
> if (ret < 0)
> goto out_sem;
> - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(cp_bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
> if (nilfs_checkpoint_invalid(cp)) {
> ret = -ENOENT;
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> goto out_cp;
> }
> if (!nilfs_checkpoint_snapshot(cp)) {
> ret = 0;
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> goto out_cp;
> }
>
> list = &cp->cp_snapshot_list;
> next = le64_to_cpu(list->ssl_next);
> prev = le64_to_cpu(list->ssl_prev);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> ret = nilfs_cpfile_get_header_block(cpfile, &header_bh);
> if (ret < 0)
> @@ -750,29 +750,29 @@ static int nilfs_cpfile_clear_snapshot(struct inode *cpfile, __u64 cno)
> get_bh(prev_bh);
> }
>
> - kaddr = kmap_atomic(next_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(next_bh->b_page);
> list = nilfs_cpfile_block_get_snapshot_list(
> cpfile, next, next_bh, kaddr);
> list->ssl_prev = cpu_to_le64(prev);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(prev_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(prev_bh->b_page);
> list = nilfs_cpfile_block_get_snapshot_list(
> cpfile, prev, prev_bh, kaddr);
> list->ssl_next = cpu_to_le64(next);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(cp_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(cp_bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, cp_bh, kaddr);
> cp->cp_snapshot_list.ssl_next = cpu_to_le64(0);
> cp->cp_snapshot_list.ssl_prev = cpu_to_le64(0);
> nilfs_checkpoint_clear_snapshot(cp);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, header_bh, kaddr);
> le64_add_cpu(&header->ch_nsnapshots, -1);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(next_bh);
> mark_buffer_dirty(prev_bh);
> @@ -829,13 +829,13 @@ int nilfs_cpfile_is_snapshot(struct inode *cpfile, __u64 cno)
> ret = nilfs_cpfile_get_checkpoint_block(cpfile, cno, 0, &bh);
> if (ret < 0)
> goto out;
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> cp = nilfs_cpfile_block_get_checkpoint(cpfile, cno, bh, kaddr);
> if (nilfs_checkpoint_invalid(cp))
> ret = -ENOENT;
> else
> ret = nilfs_checkpoint_snapshot(cp);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh);
>
> out:
> @@ -912,12 +912,12 @@ int nilfs_cpfile_get_stat(struct inode *cpfile, struct nilfs_cpstat *cpstat)
> ret = nilfs_cpfile_get_header_block(cpfile, &bh);
> if (ret < 0)
> goto out_sem;
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> header = nilfs_cpfile_block_get_header(cpfile, bh, kaddr);
> cpstat->cs_cno = nilfs_mdt_cno(cpfile);
> cpstat->cs_ncps = le64_to_cpu(header->ch_ncheckpoints);
> cpstat->cs_nsss = le64_to_cpu(header->ch_nsnapshots);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh);
>
> out_sem:
> diff --git a/fs/nilfs2/dat.c b/fs/nilfs2/dat.c
> index fcc2f86..b5c13f3 100644
> --- a/fs/nilfs2/dat.c
> +++ b/fs/nilfs2/dat.c
> @@ -85,13 +85,13 @@ void nilfs_dat_commit_alloc(struct inode *dat, struct nilfs_palloc_req *req)
> struct nilfs_dat_entry *entry;
> void *kaddr;
>
> - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req->pr_entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
> req->pr_entry_bh, kaddr);
> entry->de_start = cpu_to_le64(NILFS_CNO_MIN);
> entry->de_end = cpu_to_le64(NILFS_CNO_MAX);
> entry->de_blocknr = cpu_to_le64(0);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> nilfs_palloc_commit_alloc_entry(dat, req);
> nilfs_dat_commit_entry(dat, req);
> @@ -109,13 +109,13 @@ static void nilfs_dat_commit_free(struct inode *dat,
> struct nilfs_dat_entry *entry;
> void *kaddr;
>
> - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req->pr_entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
> req->pr_entry_bh, kaddr);
> entry->de_start = cpu_to_le64(NILFS_CNO_MIN);
> entry->de_end = cpu_to_le64(NILFS_CNO_MIN);
> entry->de_blocknr = cpu_to_le64(0);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> nilfs_dat_commit_entry(dat, req);
> nilfs_palloc_commit_free_entry(dat, req);
> @@ -136,12 +136,12 @@ void nilfs_dat_commit_start(struct inode *dat, struct nilfs_palloc_req *req,
> struct nilfs_dat_entry *entry;
> void *kaddr;
>
> - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req->pr_entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
> req->pr_entry_bh, kaddr);
> entry->de_start = cpu_to_le64(nilfs_mdt_cno(dat));
> entry->de_blocknr = cpu_to_le64(blocknr);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> nilfs_dat_commit_entry(dat, req);
> }
> @@ -160,12 +160,12 @@ int nilfs_dat_prepare_end(struct inode *dat, struct nilfs_palloc_req *req)
> return ret;
> }
>
> - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req->pr_entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
> req->pr_entry_bh, kaddr);
> start = le64_to_cpu(entry->de_start);
> blocknr = le64_to_cpu(entry->de_blocknr);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> if (blocknr == 0) {
> ret = nilfs_palloc_prepare_free_entry(dat, req);
> @@ -186,7 +186,7 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req,
> sector_t blocknr;
> void *kaddr;
>
> - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req->pr_entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
> req->pr_entry_bh, kaddr);
> end = start = le64_to_cpu(entry->de_start);
> @@ -196,7 +196,7 @@ void nilfs_dat_commit_end(struct inode *dat, struct nilfs_palloc_req *req,
> }
> entry->de_end = cpu_to_le64(end);
> blocknr = le64_to_cpu(entry->de_blocknr);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> if (blocknr == 0)
> nilfs_dat_commit_free(dat, req);
> @@ -211,12 +211,12 @@ void nilfs_dat_abort_end(struct inode *dat, struct nilfs_palloc_req *req)
> sector_t blocknr;
> void *kaddr;
>
> - kaddr = kmap_atomic(req->pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req->pr_entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, req->pr_entry_nr,
> req->pr_entry_bh, kaddr);
> start = le64_to_cpu(entry->de_start);
> blocknr = le64_to_cpu(entry->de_blocknr);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> if (start == nilfs_mdt_cno(dat) && blocknr == 0)
> nilfs_palloc_abort_free_entry(dat, req);
> @@ -346,20 +346,20 @@ int nilfs_dat_move(struct inode *dat, __u64 vblocknr, sector_t blocknr)
> }
> }
>
> - kaddr = kmap_atomic(entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr);
> if (unlikely(entry->de_blocknr == cpu_to_le64(0))) {
> printk(KERN_CRIT "%s: vbn = %llu, [%llu, %llu)\n", __func__,
> (unsigned long long)vblocknr,
> (unsigned long long)le64_to_cpu(entry->de_start),
> (unsigned long long)le64_to_cpu(entry->de_end));
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(entry_bh);
> return -EINVAL;
> }
> WARN_ON(blocknr == 0);
> entry->de_blocknr = cpu_to_le64(blocknr);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(entry_bh);
> nilfs_mdt_mark_dirty(dat);
> @@ -409,7 +409,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
> }
> }
>
> - kaddr = kmap_atomic(entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(entry_bh->b_page);
> entry = nilfs_palloc_block_get_entry(dat, vblocknr, entry_bh, kaddr);
> blocknr = le64_to_cpu(entry->de_blocknr);
> if (blocknr == 0) {
> @@ -419,7 +419,7 @@ int nilfs_dat_translate(struct inode *dat, __u64 vblocknr, sector_t *blocknrp)
> *blocknrp = blocknr;
>
> out:
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(entry_bh);
> return ret;
> }
> @@ -440,7 +440,7 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz,
> 0, &entry_bh);
> if (ret < 0)
> return ret;
> - kaddr = kmap_atomic(entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(entry_bh->b_page);
> /* last virtual block number in this block */
> first = vinfo->vi_vblocknr;
> do_div(first, entries_per_block);
> @@ -456,7 +456,7 @@ ssize_t nilfs_dat_get_vinfo(struct inode *dat, void *buf, unsigned visz,
> vinfo->vi_end = le64_to_cpu(entry->de_end);
> vinfo->vi_blocknr = le64_to_cpu(entry->de_blocknr);
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(entry_bh);
> }
>
> diff --git a/fs/nilfs2/dir.c b/fs/nilfs2/dir.c
> index 3a19239..53ed93a 100644
> --- a/fs/nilfs2/dir.c
> +++ b/fs/nilfs2/dir.c
> @@ -602,7 +602,7 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent)
> unlock_page(page);
> goto fail;
> }
> - kaddr = kmap_atomic(page, KM_USER0);
> + kaddr = kmap_atomic(page);
> memset(kaddr, 0, chunk_size);
> de = (struct nilfs_dir_entry *)kaddr;
> de->name_len = 1;
> @@ -617,7 +617,7 @@ int nilfs_make_empty(struct inode *inode, struct inode *parent)
> de->inode = cpu_to_le64(parent->i_ino);
> memcpy(de->name, "..\0", 4);
> nilfs_set_de_type(de, inode);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> nilfs_commit_chunk(page, mapping, 0, chunk_size);
> fail:
> page_cache_release(page);
> diff --git a/fs/nilfs2/ifile.c b/fs/nilfs2/ifile.c
> index 684d763..5a48df7 100644
> --- a/fs/nilfs2/ifile.c
> +++ b/fs/nilfs2/ifile.c
> @@ -122,11 +122,11 @@ int nilfs_ifile_delete_inode(struct inode *ifile, ino_t ino)
> return ret;
> }
>
> - kaddr = kmap_atomic(req.pr_entry_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(req.pr_entry_bh->b_page);
> raw_inode = nilfs_palloc_block_get_entry(ifile, req.pr_entry_nr,
> req.pr_entry_bh, kaddr);
> raw_inode->i_flags = 0;
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(req.pr_entry_bh);
> brelse(req.pr_entry_bh);
> diff --git a/fs/nilfs2/mdt.c b/fs/nilfs2/mdt.c
> index 800e8d7..f9897d0 100644
> --- a/fs/nilfs2/mdt.c
> +++ b/fs/nilfs2/mdt.c
> @@ -58,12 +58,12 @@ nilfs_mdt_insert_new_block(struct inode *inode, unsigned long block,
>
> set_buffer_mapped(bh);
>
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> memset(kaddr + bh_offset(bh), 0, 1 << inode->i_blkbits);
> if (init_block)
> init_block(inode, bh, kaddr);
> flush_dcache_page(bh->b_page);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> set_buffer_uptodate(bh);
> mark_buffer_dirty(bh);
> diff --git a/fs/nilfs2/page.c b/fs/nilfs2/page.c
> index 65221a0..3e7b2a0 100644
> --- a/fs/nilfs2/page.c
> +++ b/fs/nilfs2/page.c
> @@ -119,11 +119,11 @@ void nilfs_copy_buffer(struct buffer_head *dbh, struct buffer_head *sbh)
> struct page *spage = sbh->b_page, *dpage = dbh->b_page;
> struct buffer_head *bh;
>
> - kaddr0 = kmap_atomic(spage, KM_USER0);
> - kaddr1 = kmap_atomic(dpage, KM_USER1);
> + kaddr0 = kmap_atomic(spage);
> + kaddr1 = kmap_atomic(dpage);
> memcpy(kaddr1 + bh_offset(dbh), kaddr0 + bh_offset(sbh), sbh->b_size);
> - kunmap_atomic(kaddr1, KM_USER1);
> - kunmap_atomic(kaddr0, KM_USER0);
> + kunmap_atomic(kaddr1);
> + kunmap_atomic(kaddr0);
>
> dbh->b_state = sbh->b_state & NILFS_BUFFER_INHERENT_BITS;
> dbh->b_blocknr = sbh->b_blocknr;
> diff --git a/fs/nilfs2/recovery.c b/fs/nilfs2/recovery.c
> index a604ac0..f1626f5 100644
> --- a/fs/nilfs2/recovery.c
> +++ b/fs/nilfs2/recovery.c
> @@ -493,9 +493,9 @@ static int nilfs_recovery_copy_block(struct the_nilfs *nilfs,
> if (unlikely(!bh_org))
> return -EIO;
>
> - kaddr = kmap_atomic(page, KM_USER0);
> + kaddr = kmap_atomic(page);
> memcpy(kaddr + bh_offset(bh_org), bh_org->b_data, bh_org->b_size);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(bh_org);
> return 0;
> }
> diff --git a/fs/nilfs2/segbuf.c b/fs/nilfs2/segbuf.c
> index 850a7c0..dc9a913 100644
> --- a/fs/nilfs2/segbuf.c
> +++ b/fs/nilfs2/segbuf.c
> @@ -227,9 +227,9 @@ static void nilfs_segbuf_fill_in_data_crc(struct nilfs_segment_buffer *segbuf,
> crc = crc32_le(crc, bh->b_data, bh->b_size);
> }
> list_for_each_entry(bh, &segbuf->sb_payload_buffers, b_assoc_buffers) {
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> crc = crc32_le(crc, kaddr + bh_offset(bh), bh->b_size);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> }
> raw_sum->ss_datasum = cpu_to_le32(crc);
> }
> diff --git a/fs/nilfs2/sufile.c b/fs/nilfs2/sufile.c
> index 0a0aba6..c5b7653 100644
> --- a/fs/nilfs2/sufile.c
> +++ b/fs/nilfs2/sufile.c
> @@ -111,11 +111,11 @@ static void nilfs_sufile_mod_counter(struct buffer_head *header_bh,
> struct nilfs_sufile_header *header;
> void *kaddr;
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = kaddr + bh_offset(header_bh);
> le64_add_cpu(&header->sh_ncleansegs, ncleanadd);
> le64_add_cpu(&header->sh_ndirtysegs, ndirtyadd);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(header_bh);
> }
> @@ -319,11 +319,11 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
> ret = nilfs_sufile_get_header_block(sufile, &header_bh);
> if (ret < 0)
> goto out_sem;
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = kaddr + bh_offset(header_bh);
> ncleansegs = le64_to_cpu(header->sh_ncleansegs);
> last_alloc = le64_to_cpu(header->sh_last_alloc);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> nsegments = nilfs_sufile_get_nsegments(sufile);
> maxsegnum = sui->allocmax;
> @@ -356,7 +356,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
> &su_bh);
> if (ret < 0)
> goto out_header;
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(su_bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(
> sufile, segnum, su_bh, kaddr);
>
> @@ -367,14 +367,14 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
> continue;
> /* found a clean segment */
> nilfs_segment_usage_set_dirty(su);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = kaddr + bh_offset(header_bh);
> le64_add_cpu(&header->sh_ncleansegs, -1);
> le64_add_cpu(&header->sh_ndirtysegs, 1);
> header->sh_last_alloc = cpu_to_le64(segnum);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> sui->ncleansegs--;
> mark_buffer_dirty(header_bh);
> @@ -385,7 +385,7 @@ int nilfs_sufile_alloc(struct inode *sufile, __u64 *segnump)
> goto out_header;
> }
>
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(su_bh);
> }
>
> @@ -407,16 +407,16 @@ void nilfs_sufile_do_cancel_free(struct inode *sufile, __u64 segnum,
> struct nilfs_segment_usage *su;
> void *kaddr;
>
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(su_bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr);
> if (unlikely(!nilfs_segment_usage_clean(su))) {
> printk(KERN_WARNING "%s: segment %llu must be clean\n",
> __func__, (unsigned long long)segnum);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> return;
> }
> nilfs_segment_usage_set_dirty(su);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> nilfs_sufile_mod_counter(header_bh, -1, 1);
> NILFS_SUI(sufile)->ncleansegs--;
> @@ -433,11 +433,11 @@ void nilfs_sufile_do_scrap(struct inode *sufile, __u64 segnum,
> void *kaddr;
> int clean, dirty;
>
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + 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) &&
> su->su_nblocks == cpu_to_le32(0)) {
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> return;
> }
> clean = nilfs_segment_usage_clean(su);
> @@ -447,7 +447,7 @@ void nilfs_sufile_do_scrap(struct inode *sufile, __u64 segnum,
> 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);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> nilfs_sufile_mod_counter(header_bh, clean ? (u64)-1 : 0, dirty ? 0 : 1);
> NILFS_SUI(sufile)->ncleansegs -= clean;
> @@ -464,12 +464,12 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum,
> void *kaddr;
> int sudirty;
>
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(su_bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr);
> if (nilfs_segment_usage_clean(su)) {
> printk(KERN_WARNING "%s: segment %llu is already clean\n",
> __func__, (unsigned long long)segnum);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> return;
> }
> WARN_ON(nilfs_segment_usage_error(su));
> @@ -477,7 +477,7 @@ void nilfs_sufile_do_free(struct inode *sufile, __u64 segnum,
>
> sudirty = nilfs_segment_usage_dirty(su);
> nilfs_segment_usage_set_clean(su);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> mark_buffer_dirty(su_bh);
>
> nilfs_sufile_mod_counter(header_bh, 1, sudirty ? (u64)-1 : 0);
> @@ -525,13 +525,13 @@ int nilfs_sufile_set_segment_usage(struct inode *sufile, __u64 segnum,
> if (ret < 0)
> goto out_sem;
>
> - kaddr = kmap_atomic(bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(sufile, segnum, bh, kaddr);
> WARN_ON(nilfs_segment_usage_error(su));
> if (modtime)
> su->su_lastmod = cpu_to_le64(modtime);
> su->su_nblocks = cpu_to_le32(nblocks);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(bh);
> nilfs_mdt_mark_dirty(sufile);
> @@ -572,7 +572,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat)
> if (ret < 0)
> goto out_sem;
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = kaddr + bh_offset(header_bh);
> sustat->ss_nsegs = nilfs_sufile_get_nsegments(sufile);
> sustat->ss_ncleansegs = le64_to_cpu(header->sh_ncleansegs);
> @@ -582,7 +582,7 @@ int nilfs_sufile_get_stat(struct inode *sufile, struct nilfs_sustat *sustat)
> spin_lock(&nilfs->ns_last_segment_lock);
> sustat->ss_prot_seq = nilfs->ns_prot_seq;
> spin_unlock(&nilfs->ns_last_segment_lock);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(header_bh);
>
> out_sem:
> @@ -598,15 +598,15 @@ void nilfs_sufile_do_set_error(struct inode *sufile, __u64 segnum,
> void *kaddr;
> int suclean;
>
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(su_bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(sufile, segnum, su_bh, kaddr);
> if (nilfs_segment_usage_error(su)) {
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> return;
> }
> suclean = nilfs_segment_usage_clean(su);
> nilfs_segment_usage_set_error(su);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> if (suclean) {
> nilfs_sufile_mod_counter(header_bh, -1, 0);
> @@ -675,7 +675,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile,
> /* hole */
> continue;
> }
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(su_bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(
> sufile, segnum, su_bh, kaddr);
> su2 = su;
> @@ -684,7 +684,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile,
> ~(1UL << NILFS_SEGMENT_USAGE_ERROR)) ||
> nilfs_segment_is_active(nilfs, segnum + j)) {
> ret = -EBUSY;
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(su_bh);
> goto out_header;
> }
> @@ -696,7 +696,7 @@ static int nilfs_sufile_truncate_range(struct inode *sufile,
> nc++;
> }
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> if (nc > 0) {
> mark_buffer_dirty(su_bh);
> ncleaned += nc;
> @@ -772,10 +772,10 @@ int nilfs_sufile_resize(struct inode *sufile, __u64 newnsegs)
> sui->ncleansegs -= nsegs - newnsegs;
> }
>
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = kaddr + bh_offset(header_bh);
> header->sh_ncleansegs = cpu_to_le64(sui->ncleansegs);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
>
> mark_buffer_dirty(header_bh);
> nilfs_mdt_mark_dirty(sufile);
> @@ -840,7 +840,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf,
> continue;
> }
>
> - kaddr = kmap_atomic(su_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(su_bh->b_page);
> su = nilfs_sufile_block_get_segment_usage(
> sufile, segnum, su_bh, kaddr);
> for (j = 0; j < n;
> @@ -853,7 +853,7 @@ ssize_t nilfs_sufile_get_suinfo(struct inode *sufile, __u64 segnum, void *buf,
> si->sui_flags |=
> (1UL << NILFS_SEGMENT_USAGE_ACTIVE);
> }
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(su_bh);
> }
> ret = nsegs;
> @@ -902,10 +902,10 @@ int nilfs_sufile_read(struct super_block *sb, size_t susize,
> goto failed;
>
> sui = NILFS_SUI(sufile);
> - kaddr = kmap_atomic(header_bh->b_page, KM_USER0);
> + kaddr = kmap_atomic(header_bh->b_page);
> header = kaddr + bh_offset(header_bh);
> sui->ncleansegs = le64_to_cpu(header->sh_ncleansegs);
> - kunmap_atomic(kaddr, KM_USER0);
> + kunmap_atomic(kaddr);
> brelse(header_bh);
>
> sui->allocmax = nilfs_sufile_get_nsegments(sufile) - 1;
> --
> 1.7.4.4
>
> --
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