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-rw-r--r--fs/btrfs/zstd.c80
1 files changed, 43 insertions, 37 deletions
diff --git a/fs/btrfs/zstd.c b/fs/btrfs/zstd.c
index 92b3744b819b..2b232b82c3a8 100644
--- a/fs/btrfs/zstd.c
+++ b/fs/btrfs/zstd.c
@@ -374,25 +374,25 @@ fail:
return ERR_PTR(-ENOMEM);
}
-int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
- u64 start, struct page **pages, unsigned long *out_pages,
- unsigned long *total_in, unsigned long *total_out)
+int zstd_compress_folios(struct list_head *ws, struct address_space *mapping,
+ u64 start, struct folio **folios, unsigned long *out_folios,
+ unsigned long *total_in, unsigned long *total_out)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
zstd_cstream *stream;
int ret = 0;
- int nr_pages = 0;
- struct page *in_page = NULL; /* The current page to read */
- struct page *out_page = NULL; /* The current page to write to */
+ int nr_folios = 0;
+ struct folio *in_folio = NULL; /* The current folio to read. */
+ struct folio *out_folio = NULL; /* The current folio to write to. */
unsigned long tot_in = 0;
unsigned long tot_out = 0;
unsigned long len = *total_out;
- const unsigned long nr_dest_pages = *out_pages;
- unsigned long max_out = nr_dest_pages * PAGE_SIZE;
+ const unsigned long nr_dest_folios = *out_folios;
+ unsigned long max_out = nr_dest_folios * PAGE_SIZE;
zstd_parameters params = zstd_get_btrfs_parameters(workspace->req_level,
len);
- *out_pages = 0;
+ *out_folios = 0;
*total_out = 0;
*total_in = 0;
@@ -406,19 +406,21 @@ int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
}
/* map in the first page of input data */
- in_page = find_get_page(mapping, start >> PAGE_SHIFT);
- workspace->in_buf.src = kmap_local_page(in_page);
+ ret = btrfs_compress_filemap_get_folio(mapping, start, &in_folio);
+ if (ret < 0)
+ goto out;
+ workspace->in_buf.src = kmap_local_folio(in_folio, 0);
workspace->in_buf.pos = 0;
workspace->in_buf.size = min_t(size_t, len, PAGE_SIZE);
/* Allocate and map in the output buffer */
- out_page = btrfs_alloc_compr_page();
- if (out_page == NULL) {
+ out_folio = btrfs_alloc_compr_folio();
+ if (out_folio == NULL) {
ret = -ENOMEM;
goto out;
}
- pages[nr_pages++] = out_page;
- workspace->out_buf.dst = page_address(out_page);
+ folios[nr_folios++] = out_folio;
+ workspace->out_buf.dst = folio_address(out_folio);
workspace->out_buf.pos = 0;
workspace->out_buf.size = min_t(size_t, max_out, PAGE_SIZE);
@@ -453,17 +455,17 @@ int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
if (workspace->out_buf.pos == workspace->out_buf.size) {
tot_out += PAGE_SIZE;
max_out -= PAGE_SIZE;
- if (nr_pages == nr_dest_pages) {
+ if (nr_folios == nr_dest_folios) {
ret = -E2BIG;
goto out;
}
- out_page = btrfs_alloc_compr_page();
- if (out_page == NULL) {
+ out_folio = btrfs_alloc_compr_folio();
+ if (out_folio == NULL) {
ret = -ENOMEM;
goto out;
}
- pages[nr_pages++] = out_page;
- workspace->out_buf.dst = page_address(out_page);
+ folios[nr_folios++] = out_folio;
+ workspace->out_buf.dst = folio_address(out_folio);
workspace->out_buf.pos = 0;
workspace->out_buf.size = min_t(size_t, max_out,
PAGE_SIZE);
@@ -479,11 +481,14 @@ int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
if (workspace->in_buf.pos == workspace->in_buf.size) {
tot_in += PAGE_SIZE;
kunmap_local(workspace->in_buf.src);
- put_page(in_page);
+ workspace->in_buf.src = NULL;
+ folio_put(in_folio);
start += PAGE_SIZE;
len -= PAGE_SIZE;
- in_page = find_get_page(mapping, start >> PAGE_SHIFT);
- workspace->in_buf.src = kmap_local_page(in_page);
+ ret = btrfs_compress_filemap_get_folio(mapping, start, &in_folio);
+ if (ret < 0)
+ goto out;
+ workspace->in_buf.src = kmap_local_folio(in_folio, 0);
workspace->in_buf.pos = 0;
workspace->in_buf.size = min_t(size_t, len, PAGE_SIZE);
}
@@ -510,17 +515,17 @@ int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
tot_out += PAGE_SIZE;
max_out -= PAGE_SIZE;
- if (nr_pages == nr_dest_pages) {
+ if (nr_folios == nr_dest_folios) {
ret = -E2BIG;
goto out;
}
- out_page = btrfs_alloc_compr_page();
- if (out_page == NULL) {
+ out_folio = btrfs_alloc_compr_folio();
+ if (out_folio == NULL) {
ret = -ENOMEM;
goto out;
}
- pages[nr_pages++] = out_page;
- workspace->out_buf.dst = page_address(out_page);
+ folios[nr_folios++] = out_folio;
+ workspace->out_buf.dst = folio_address(out_folio);
workspace->out_buf.pos = 0;
workspace->out_buf.size = min_t(size_t, max_out, PAGE_SIZE);
}
@@ -534,10 +539,10 @@ int zstd_compress_pages(struct list_head *ws, struct address_space *mapping,
*total_in = tot_in;
*total_out = tot_out;
out:
- *out_pages = nr_pages;
+ *out_folios = nr_folios;
if (workspace->in_buf.src) {
kunmap_local(workspace->in_buf.src);
- put_page(in_page);
+ folio_put(in_folio);
}
return ret;
}
@@ -545,12 +550,12 @@ out:
int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
{
struct workspace *workspace = list_entry(ws, struct workspace, list);
- struct page **pages_in = cb->compressed_pages;
+ struct folio **folios_in = cb->compressed_folios;
size_t srclen = cb->compressed_len;
zstd_dstream *stream;
int ret = 0;
- unsigned long page_in_index = 0;
- unsigned long total_pages_in = DIV_ROUND_UP(srclen, PAGE_SIZE);
+ unsigned long folio_in_index = 0;
+ unsigned long total_folios_in = DIV_ROUND_UP(srclen, PAGE_SIZE);
unsigned long buf_start;
unsigned long total_out = 0;
@@ -562,7 +567,7 @@ int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
goto done;
}
- workspace->in_buf.src = kmap_local_page(pages_in[page_in_index]);
+ workspace->in_buf.src = kmap_local_folio(folios_in[folio_in_index], 0);
workspace->in_buf.pos = 0;
workspace->in_buf.size = min_t(size_t, srclen, PAGE_SIZE);
@@ -599,14 +604,15 @@ int zstd_decompress_bio(struct list_head *ws, struct compressed_bio *cb)
if (workspace->in_buf.pos == workspace->in_buf.size) {
kunmap_local(workspace->in_buf.src);
- page_in_index++;
- if (page_in_index >= total_pages_in) {
+ folio_in_index++;
+ if (folio_in_index >= total_folios_in) {
workspace->in_buf.src = NULL;
ret = -EIO;
goto done;
}
srclen -= PAGE_SIZE;
- workspace->in_buf.src = kmap_local_page(pages_in[page_in_index]);
+ workspace->in_buf.src =
+ kmap_local_folio(folios_in[folio_in_index], 0);
workspace->in_buf.pos = 0;
workspace->in_buf.size = min_t(size_t, srclen, PAGE_SIZE);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 00:33:15 +0000