Convert writeback requests to use folios instead of pages.
No functional changes.
Signed-off-by: Joanne Koong <joannelkoong@xxxxxxxxx>
Reviewed-by: Josef Bacik <josef@xxxxxxxxxxxxxx>
---
fs/fuse/file.c | 126 +++++++++++++++++++++++++------------------------
1 file changed, 64 insertions(+), 62 deletions(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index b3d5b7b5da52..99af3c39e529 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -436,7 +436,7 @@ static struct fuse_writepage_args *fuse_find_writeback(struct fuse_inode *fi,
wpa = rb_entry(n, struct fuse_writepage_args, writepages_entry);
WARN_ON(get_fuse_inode(wpa->inode) != fi);
curr_index = wpa->ia.write.in.offset >> PAGE_SHIFT;
- if (idx_from >= curr_index + wpa->ia.ap.num_pages)
+ if (idx_from >= curr_index + wpa->ia.ap.num_folios)
n = n->rb_right;
else if (idx_to < curr_index)
n = n->rb_left;
@@ -1837,12 +1837,12 @@ static void fuse_writepage_free(struct fuse_writepage_args *wpa)
if (wpa->bucket)
fuse_sync_bucket_dec(wpa->bucket);
- for (i = 0; i < ap->num_pages; i++)
- __free_page(ap->pages[i]);
+ for (i = 0; i < ap->num_folios; i++)
+ folio_put(ap->folios[i]);
fuse_file_put(wpa->ia.ff, false);
- kfree(ap->pages);
+ kfree(ap->folios);
kfree(wpa);
}
@@ -1862,8 +1862,8 @@ static void fuse_writepage_finish(struct fuse_writepage_args *wpa)
struct fuse_inode *fi = get_fuse_inode(inode);
int i;
- for (i = 0; i < ap->num_pages; i++)
- fuse_writepage_finish_stat(inode, page_folio(ap->pages[i]));
+ for (i = 0; i < ap->num_folios; i++)
+ fuse_writepage_finish_stat(inode, ap->folios[i]);
wake_up(&fi->page_waitq);
}
@@ -1878,7 +1878,8 @@ __acquires(fi->lock)
struct fuse_inode *fi = get_fuse_inode(wpa->inode);
struct fuse_write_in *inarg = &wpa->ia.write.in;
struct fuse_args *args = &wpa->ia.ap.args;
- __u64 data_size = wpa->ia.ap.num_pages * PAGE_SIZE;
+ /* Currently, all folios in FUSE are one page */
+ __u64 data_size = wpa->ia.ap.num_folios * PAGE_SIZE;
int err;
fi->writectr++;
@@ -1919,7 +1920,7 @@ __acquires(fi->lock)
next = aux->next;
aux->next = NULL;
fuse_writepage_finish_stat(aux->inode,
- page_folio(aux->ia.ap.pages[0]));
+ aux->ia.ap.folios[0]);
fuse_writepage_free(aux);
}
@@ -1954,11 +1955,11 @@ static struct fuse_writepage_args *fuse_insert_writeback(struct rb_root *root,
struct fuse_writepage_args *wpa)
{
pgoff_t idx_from = wpa->ia.write.in.offset >> PAGE_SHIFT;
- pgoff_t idx_to = idx_from + wpa->ia.ap.num_pages - 1;
+ pgoff_t idx_to = idx_from + wpa->ia.ap.num_folios - 1;
struct rb_node **p = &root->rb_node;
struct rb_node *parent = NULL;
- WARN_ON(!wpa->ia.ap.num_pages);
+ WARN_ON(!wpa->ia.ap.num_folios);
while (*p) {
struct fuse_writepage_args *curr;
pgoff_t curr_index;
@@ -1969,7 +1970,7 @@ static struct fuse_writepage_args *fuse_insert_writeback(struct rb_root *root,
WARN_ON(curr->inode != wpa->inode);
curr_index = curr->ia.write.in.offset >> PAGE_SHIFT;
- if (idx_from >= curr_index + curr->ia.ap.num_pages)
+ if (idx_from >= curr_index + curr->ia.ap.num_folios)
p = &(*p)->rb_right;
else if (idx_to < curr_index)
p = &(*p)->rb_left;
@@ -2101,9 +2102,10 @@ static struct fuse_writepage_args *fuse_writepage_args_alloc(void)
wpa = kzalloc(sizeof(*wpa), GFP_NOFS);
if (wpa) {
ap = &wpa->ia.ap;
- ap->num_pages = 0;
- ap->pages = fuse_pages_alloc(1, GFP_NOFS, &ap->descs);
- if (!ap->pages) {
+ ap->num_folios = 0;
+ ap->uses_folios = true;
+ ap->folios = fuse_folios_alloc(1, GFP_NOFS, &ap->folio_descs);
+ if (!ap->folios) {
kfree(wpa);
wpa = NULL;
}
@@ -2127,16 +2129,16 @@ static void fuse_writepage_add_to_bucket(struct fuse_conn *fc,
}
static void fuse_writepage_args_page_fill(struct fuse_writepage_args *wpa, struct folio *folio,
- struct folio *tmp_folio, uint32_t page_index)
+ struct folio *tmp_folio, uint32_t folio_index)
{
struct inode *inode = folio->mapping->host;
struct fuse_args_pages *ap = &wpa->ia.ap;
folio_copy(tmp_folio, folio);
- ap->pages[page_index] = &tmp_folio->page;
- ap->descs[page_index].offset = 0;
- ap->descs[page_index].length = PAGE_SIZE;
+ ap->folios[folio_index] = tmp_folio;
+ ap->folio_descs[folio_index].offset = 0;
+ ap->folio_descs[folio_index].length = PAGE_SIZE;
inc_wb_stat(&inode_to_bdi(inode)->wb, WB_WRITEBACK);
node_stat_add_folio(tmp_folio, NR_WRITEBACK_TEMP);
@@ -2193,7 +2195,7 @@ static int fuse_writepage_locked(struct folio *folio)
goto err_writepage_args;
ap = &wpa->ia.ap;
- ap->num_pages = 1;
+ ap->num_folios = 1;
folio_start_writeback(folio);
fuse_writepage_args_page_fill(wpa, folio, tmp_folio, 0);
@@ -2221,32 +2223,32 @@ struct fuse_fill_wb_data {
struct fuse_writepage_args *wpa;
struct fuse_file *ff;
struct inode *inode;
- struct page **orig_pages;
- unsigned int max_pages;
+ struct folio **orig_folios;
+ unsigned int max_folios;
};
static bool fuse_pages_realloc(struct fuse_fill_wb_data *data)
{
struct fuse_args_pages *ap = &data->wpa->ia.ap;
struct fuse_conn *fc = get_fuse_conn(data->inode);
- struct page **pages;
- struct fuse_page_desc *descs;
- unsigned int npages = min_t(unsigned int,
- max_t(unsigned int, data->max_pages * 2,
- FUSE_DEFAULT_MAX_PAGES_PER_REQ),
+ struct folio **folios;
+ struct fuse_folio_desc *descs;
+ unsigned int nfolios = min_t(unsigned int,
+ max_t(unsigned int, data->max_folios * 2,
+ FUSE_DEFAULT_MAX_PAGES_PER_REQ),
fc->max_pages);
- WARN_ON(npages <= data->max_pages);
+ WARN_ON(nfolios <= data->max_folios);
- pages = fuse_pages_alloc(npages, GFP_NOFS, &descs);
- if (!pages)
+ folios = fuse_folios_alloc(nfolios, GFP_NOFS, &descs);
+ if (!folios)
return false;
- memcpy(pages, ap->pages, sizeof(struct page *) * ap->num_pages);
- memcpy(descs, ap->descs, sizeof(struct fuse_page_desc) * ap->num_pages);
- kfree(ap->pages);
- ap->pages = pages;
- ap->descs = descs;
- data->max_pages = npages;
+ memcpy(folios, ap->folios, sizeof(struct folio *) * ap->num_folios);
+ memcpy(descs, ap->folio_descs, sizeof(struct fuse_folio_desc) * ap->num_folios);
+ kfree(ap->folios);
+ ap->folios = folios;
+ ap->folio_descs = descs;
+ data->max_folios = nfolios;
return true;
}
@@ -2256,7 +2258,7 @@ static void fuse_writepages_send(struct fuse_fill_wb_data *data)
struct fuse_writepage_args *wpa = data->wpa;
struct inode *inode = data->inode;
struct fuse_inode *fi = get_fuse_inode(inode);
- int num_pages = wpa->ia.ap.num_pages;
+ int num_folios = wpa->ia.ap.num_folios;
int i;
spin_lock(&fi->lock);
@@ -2264,8 +2266,8 @@ static void fuse_writepages_send(struct fuse_fill_wb_data *data)
fuse_flush_writepages(inode);
spin_unlock(&fi->lock);
- for (i = 0; i < num_pages; i++)
- end_page_writeback(data->orig_pages[i]);
+ for (i = 0; i < num_folios; i++)
+ folio_end_writeback(data->orig_folios[i]);
}
/*
@@ -2276,15 +2278,15 @@ static void fuse_writepages_send(struct fuse_fill_wb_data *data)
* swapping the new temp page with the old one.
*/
static bool fuse_writepage_add(struct fuse_writepage_args *new_wpa,
- struct page *page)
+ struct folio *folio)
{
struct fuse_inode *fi = get_fuse_inode(new_wpa->inode);
struct fuse_writepage_args *tmp;
struct fuse_writepage_args *old_wpa;
struct fuse_args_pages *new_ap = &new_wpa->ia.ap;
- WARN_ON(new_ap->num_pages != 0);
- new_ap->num_pages = 1;
+ WARN_ON(new_ap->num_folios != 0);
+ new_ap->num_folios = 1;
spin_lock(&fi->lock);
old_wpa = fuse_insert_writeback(&fi->writepages, new_wpa);
@@ -2298,9 +2300,9 @@ static bool fuse_writepage_add(struct fuse_writepage_args *new_wpa,
WARN_ON(tmp->inode != new_wpa->inode);
curr_index = tmp->ia.write.in.offset >> PAGE_SHIFT;
- if (curr_index == page->index) {
- WARN_ON(tmp->ia.ap.num_pages != 1);
- swap(tmp->ia.ap.pages[0], new_ap->pages[0]);
+ if (curr_index == folio->index) {
+ WARN_ON(tmp->ia.ap.num_folios != 1);
+ swap(tmp->ia.ap.folios[0], new_ap->folios[0]);
break;
}
}
@@ -2314,7 +2316,7 @@ static bool fuse_writepage_add(struct fuse_writepage_args *new_wpa,
if (tmp) {
fuse_writepage_finish_stat(new_wpa->inode,
- page_folio(new_ap->pages[0]));
+ folio);
fuse_writepage_free(new_wpa);
}
@@ -2325,7 +2327,7 @@ static bool fuse_writepage_need_send(struct fuse_conn *fc, struct folio *folio,
struct fuse_args_pages *ap,
struct fuse_fill_wb_data *data)
{
- WARN_ON(!ap->num_pages);
+ WARN_ON(!ap->num_folios);
/*
* Being under writeback is unlikely but possible. For example direct
@@ -2337,19 +2339,19 @@ static bool fuse_writepage_need_send(struct fuse_conn *fc, struct folio *folio,
return true;
/* Reached max pages */
- if (ap->num_pages == fc->max_pages)
+ if (ap->num_folios == fc->max_pages)
return true;
/* Reached max write bytes */
- if ((ap->num_pages + 1) * PAGE_SIZE > fc->max_write)
+ if ((ap->num_folios + 1) * PAGE_SIZE > fc->max_write)
return true;
/* Discontinuity */
- if (data->orig_pages[ap->num_pages - 1]->index + 1 != folio_index(folio))
+ if (data->orig_folios[ap->num_folios - 1]->index + 1 != folio_index(folio))
return true;
/* Need to grow the pages array? If so, did the expansion fail? */
- if (ap->num_pages == data->max_pages && !fuse_pages_realloc(data))
+ if (ap->num_folios == data->max_folios && !fuse_pages_realloc(data))
return true;
return false;
@@ -2393,7 +2395,7 @@ static int fuse_writepages_fill(struct folio *folio,
* This is ensured by holding the page lock in page_mkwrite() while
* checking fuse_page_is_writeback(). We already hold the page lock
* since clear_page_dirty_for_io() and keep it held until we add the
- * request to the fi->writepages list and increment ap->num_pages.
+ * request to the fi->writepages list and increment ap->num_folios.
* After this fuse_page_is_writeback() will indicate that the page is
* under writeback, so we can release the page lock.
*/
@@ -2405,13 +2407,13 @@ static int fuse_writepages_fill(struct folio *folio,
goto out_unlock;
}
fuse_file_get(wpa->ia.ff);
- data->max_pages = 1;
+ data->max_folios = 1;
ap = &wpa->ia.ap;
}
folio_start_writeback(folio);
- fuse_writepage_args_page_fill(wpa, folio, tmp_folio, ap->num_pages);
- data->orig_pages[ap->num_pages] = &folio->page;
+ fuse_writepage_args_page_fill(wpa, folio, tmp_folio, ap->num_folios);
+ data->orig_folios[ap->num_folios] = folio;
err = 0;
if (data->wpa) {
@@ -2420,9 +2422,9 @@ static int fuse_writepages_fill(struct folio *folio,
* fuse_page_is_writeback().
*/
spin_lock(&fi->lock);
- ap->num_pages++;
+ ap->num_folios++;
spin_unlock(&fi->lock);
- } else if (fuse_writepage_add(wpa, &folio->page)) {
+ } else if (fuse_writepage_add(wpa, folio)) {
data->wpa = wpa;
} else {
folio_end_writeback(folio);
@@ -2454,21 +2456,21 @@ static int fuse_writepages(struct address_space *mapping,
data.ff = NULL;
err = -ENOMEM;
- data.orig_pages = kcalloc(fc->max_pages,
- sizeof(struct page *),
- GFP_NOFS);
- if (!data.orig_pages)
+ data.orig_folios = kcalloc(fc->max_pages,
+ sizeof(struct folio *),
+ GFP_NOFS);
+ if (!data.orig_folios)
goto out;
err = write_cache_pages(mapping, wbc, fuse_writepages_fill, &data);
if (data.wpa) {
- WARN_ON(!data.wpa->ia.ap.num_pages);
+ WARN_ON(!data.wpa->ia.ap.num_folios);
fuse_writepages_send(&data);
}
if (data.ff)
fuse_file_put(data.ff, false);
- kfree(data.orig_pages);
+ kfree(data.orig_folios);
out:
return err;
}
--
2.43.5
