[PATCH 28/60] btrfs: remove the second argument of k[un]map_atomic()

Cong Wang
2012-02-10T05:45:18Z

fs/btrfs/compression.c | 12 ++++++------
fs/btrfs/extent_io.c | 16 ++++++++--------
fs/btrfs/file-item.c | 4 ++--
fs/btrfs/inode.c | 26 +++++++++++++-------------
fs/btrfs/lzo.c | 4 ++--
fs/btrfs/scrub.c | 8 ++++----
fs/btrfs/zlib.c | 4 ++--
7 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 14f1c5a..93f4af1 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -120,10 +120,10 @@ static int check_compressed_csum(struct inode *inode,
page = cb->compressed_pages[i];
csum = ~(u32)0;

- kaddr = kmap_atomic(page, KM_USER0);
+ kaddr = kmap_atomic(page);
csum = btrfs_csum_data(root, kaddr, csum, PAGE_CACHE_SIZE);
btrfs_csum_final(csum, (char *)&csum);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);

if (csum != *cb_sum) {
printk(KERN_INFO "btrfs csum failed ino %llu "
@@ -521,10 +521,10 @@ static noinline int add_ra_bio_pages(struct inode *inode,
if (zero_offset) {
int zeros;
zeros = PAGE_CACHE_SIZE - zero_offset;
- userpage = kmap_atomic(page, KM_USER0);
+ userpage = kmap_atomic(page);
memset(userpage + zero_offset, 0, zeros);
flush_dcache_page(page);
- kunmap_atomic(userpage, KM_USER0);
+ kunmap_atomic(userpage);
}
}

@@ -991,9 +991,9 @@ int btrfs_decompress_buf2page(char *buf, unsigned long buf_start,
bytes = min(PAGE_CACHE_SIZE - *pg_offset,
PAGE_CACHE_SIZE - buf_offset);
bytes = min(bytes, working_bytes);
- kaddr = kmap_atomic(page_out, KM_USER0);
+ kaddr = kmap_atomic(page_out);
memcpy(kaddr + *pg_offset, buf + buf_offset, bytes);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
flush_dcache_page(page_out);

*pg_offset += bytes;
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index fcf77e1..8a57b0d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2535,10 +2535,10 @@ static int __extent_read_full_page(struct extent_io_tree *tree,

if (zero_offset) {
iosize = PAGE_CACHE_SIZE - zero_offset;
- userpage = kmap_atomic(page, KM_USER0);
+ userpage = kmap_atomic(page);
memset(userpage + zero_offset, 0, iosize);
flush_dcache_page(page);
- kunmap_atomic(userpage, KM_USER0);
+ kunmap_atomic(userpage);
}
}
while (cur <= end) {
@@ -2547,10 +2547,10 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
struct extent_state *cached = NULL;

iosize = PAGE_CACHE_SIZE - pg_offset;
- userpage = kmap_atomic(page, KM_USER0);
+ userpage = kmap_atomic(page);
memset(userpage + pg_offset, 0, iosize);
flush_dcache_page(page);
- kunmap_atomic(userpage, KM_USER0);
+ kunmap_atomic(userpage);
set_extent_uptodate(tree, cur, cur + iosize - 1,
&cached, GFP_NOFS);
unlock_extent_cached(tree, cur, cur + iosize - 1,
@@ -2596,10 +2596,10 @@ static int __extent_read_full_page(struct extent_io_tree *tree,
char *userpage;
struct extent_state *cached = NULL;

- userpage = kmap_atomic(page, KM_USER0);
+ userpage = kmap_atomic(page);
memset(userpage + pg_offset, 0, iosize);
flush_dcache_page(page);
- kunmap_atomic(userpage, KM_USER0);
+ kunmap_atomic(userpage);

set_extent_uptodate(tree, cur, cur + iosize - 1,
&cached, GFP_NOFS);
@@ -2745,10 +2745,10 @@ static int __extent_writepage(struct page *page, struct writeback_control *wbc,
if (page->index == end_index) {
char *userpage;

- userpage = kmap_atomic(page, KM_USER0);
+ userpage = kmap_atomic(page);
memset(userpage + pg_offset, 0,
PAGE_CACHE_SIZE - pg_offset);
- kunmap_atomic(userpage, KM_USER0);
+ kunmap_atomic(userpage);
flush_dcache_page(page);
}
pg_offset = 0;
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index c7fb3a4..078b4fd 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -447,13 +447,13 @@ int btrfs_csum_one_bio(struct btrfs_root *root, struct inode *inode,
sums->bytenr = ordered->start;
}

- data = kmap_atomic(bvec->bv_page, KM_USER0);
+ data = kmap_atomic(bvec->bv_page);
sector_sum->sum = ~(u32)0;
sector_sum->sum = btrfs_csum_data(root,
data + bvec->bv_offset,
sector_sum->sum,
bvec->bv_len);
- kunmap_atomic(data, KM_USER0);
+ kunmap_atomic(data);
btrfs_csum_final(sector_sum->sum,
(char *)&sector_sum->sum);
sector_sum->bytenr = disk_bytenr;
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 32214fe..a5adfe6 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -173,9 +173,9 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans,
cur_size = min_t(unsigned long, compressed_size,
PAGE_CACHE_SIZE);

- kaddr = kmap_atomic(cpage, KM_USER0);
+ kaddr = kmap_atomic(cpage);
write_extent_buffer(leaf, kaddr, ptr, cur_size);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);

i++;
ptr += cur_size;
@@ -187,10 +187,10 @@ static noinline int insert_inline_extent(struct btrfs_trans_handle *trans,
page = find_get_page(inode->i_mapping,
start >> PAGE_CACHE_SHIFT);
btrfs_set_file_extent_compression(leaf, ei, 0);
- kaddr = kmap_atomic(page, KM_USER0);
+ kaddr = kmap_atomic(page);
offset = start & (PAGE_CACHE_SIZE - 1);
write_extent_buffer(leaf, kaddr + offset, ptr, size);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
page_cache_release(page);
}
btrfs_mark_buffer_dirty(leaf);
@@ -422,10 +422,10 @@ again:
* sending it down to disk
*/
if (offset) {
- kaddr = kmap_atomic(page, KM_USER0);
+ kaddr = kmap_atomic(page);
memset(kaddr + offset, 0,
PAGE_CACHE_SIZE - offset);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
}
will_compress = 1;
}
@@ -1863,7 +1863,7 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
} else {
ret = get_state_private(io_tree, start, &private);
}
- kaddr = kmap_atomic(page, KM_USER0);
+ kaddr = kmap_atomic(page);
if (ret)
goto zeroit;

@@ -1872,7 +1872,7 @@ static int btrfs_readpage_end_io_hook(struct page *page, u64 start, u64 end,
if (csum != private)
goto zeroit;

- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
good:
return 0;

@@ -1884,7 +1884,7 @@ zeroit:
(unsigned long long)private);
memset(kaddr + offset, 1, end - start + 1);
flush_dcache_page(page);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
if (private == 0)
return 0;
return -EIO;
@@ -4909,12 +4909,12 @@ static noinline int uncompress_inline(struct btrfs_path *path,
ret = btrfs_decompress(compress_type, tmp, page,
extent_offset, inline_size, max_size);
if (ret) {
- char *kaddr = kmap_atomic(page, KM_USER0);
+ char *kaddr = kmap_atomic(page);
unsigned long copy_size = min_t(u64,
PAGE_CACHE_SIZE - pg_offset,
max_size - extent_offset);
memset(kaddr + pg_offset, 0, copy_size);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
}
kfree(tmp);
return 0;
@@ -5691,11 +5691,11 @@ static void btrfs_endio_direct_read(struct bio *bio, int err)
unsigned long flags;

local_irq_save(flags);
- kaddr = kmap_atomic(page, KM_IRQ0);
+ kaddr = kmap_atomic(page);
csum = btrfs_csum_data(root, kaddr + bvec->bv_offset,
csum, bvec->bv_len);
btrfs_csum_final(csum, (char *)&csum);
- kunmap_atomic(kaddr, KM_IRQ0);
+ kunmap_atomic(kaddr);
local_irq_restore(flags);

flush_dcache_page(bvec->bv_page);
diff --git a/fs/btrfs/lzo.c b/fs/btrfs/lzo.c
index a178f5e..743b86f 100644
--- a/fs/btrfs/lzo.c
+++ b/fs/btrfs/lzo.c
@@ -411,9 +411,9 @@ static int lzo_decompress(struct list_head *ws, unsigned char *data_in,

bytes = min_t(unsigned long, destlen, out_len - start_byte);

- kaddr = kmap_atomic(dest_page, KM_USER0);
+ kaddr = kmap_atomic(dest_page);
memcpy(kaddr, workspace->buf + start_byte, bytes);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);
out:
return ret;
}
diff --git a/fs/btrfs/scrub.c b/fs/btrfs/scrub.c
index 9770cc5..1867109 100644
--- a/fs/btrfs/scrub.c
+++ b/fs/btrfs/scrub.c
@@ -591,7 +591,7 @@ static int scrub_fixup_check(struct scrub_bio *sbio, int ix)
u64 flags = sbio->spag[ix].flags;

page = sbio->bio->bi_io_vec[ix].bv_page;
- buffer = kmap_atomic(page, KM_USER0);
+ buffer = kmap_atomic(page);
if (flags & BTRFS_EXTENT_FLAG_DATA) {
ret = scrub_checksum_data(sbio->sdev,
sbio->spag + ix, buffer);
@@ -603,7 +603,7 @@ static int scrub_fixup_check(struct scrub_bio *sbio, int ix)
} else {
WARN_ON(1);
}
- kunmap_atomic(buffer, KM_USER0);
+ kunmap_atomic(buffer);

return ret;
}
@@ -792,7 +792,7 @@ static void scrub_checksum(struct btrfs_work *work)
}
for (i = 0; i < sbio->count; ++i) {
page = sbio->bio->bi_io_vec[i].bv_page;
- buffer = kmap_atomic(page, KM_USER0);
+ buffer = kmap_atomic(page);
flags = sbio->spag[i].flags;
logical = sbio->logical + i * PAGE_SIZE;
ret = 0;
@@ -807,7 +807,7 @@ static void scrub_checksum(struct btrfs_work *work)
} else {
WARN_ON(1);
}
- kunmap_atomic(buffer, KM_USER0);
+ kunmap_atomic(buffer);
if (ret) {
ret = scrub_recheck_error(sbio, i);
if (!ret) {
diff --git a/fs/btrfs/zlib.c b/fs/btrfs/zlib.c
index faccd47..92c2065 100644
--- a/fs/btrfs/zlib.c
+++ b/fs/btrfs/zlib.c
@@ -370,9 +370,9 @@ static int zlib_decompress(struct list_head *ws, unsigned char *data_in,
PAGE_CACHE_SIZE - buf_offset);
bytes = min(bytes, bytes_left);

- kaddr = kmap_atomic(dest_page, KM_USER0);
+ kaddr = kmap_atomic(dest_page);
memcpy(kaddr + pg_offset, workspace->buf + buf_offset, bytes);
- kunmap_atomic(kaddr, KM_USER0);
+ kunmap_atomic(kaddr);

pg_offset += bytes;
bytes_left -= bytes;
--
1.7.7.6