Convert read requests to use folios instead of pages.
No functional changes.
Signed-off-by: Joanne Koong <joannelkoong@xxxxxxxxx>
---
fs/fuse/file.c | 67 ++++++++++++++++++++++++++++++++----------------
fs/fuse/fuse_i.h | 12 +++++++++
2 files changed, 57 insertions(+), 22 deletions(-)
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index dc701fa94c58..ad419fafbd5d 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -757,12 +757,37 @@ static struct fuse_io_args *fuse_io_alloc(struct fuse_io_priv *io,
return ia;
}
+static struct fuse_io_args *fuse_io_folios_alloc(struct fuse_io_priv *io,
+ unsigned int nfolios)
+{
+ struct fuse_io_args *ia;
+
+ ia = kzalloc(sizeof(*ia), GFP_KERNEL);
+ if (ia) {
+ ia->io = io;
+ ia->ap.uses_folios = true;
+ ia->ap.folios = fuse_folios_alloc(nfolios, GFP_KERNEL,
+ &ia->ap.folio_descs);
+ if (!ia->ap.folios) {
+ kfree(ia);
+ ia = NULL;
+ }
+ }
+ return ia;
+}
+
static void fuse_io_free(struct fuse_io_args *ia)
{
kfree(ia->ap.pages);
kfree(ia);
}
+static void fuse_io_folios_free(struct fuse_io_args *ia)
+{
+ kfree(ia->ap.folios);
+ kfree(ia);
+}
+
static void fuse_aio_complete_req(struct fuse_mount *fm, struct fuse_args *args,
int err)
{
@@ -858,7 +883,7 @@ static void fuse_short_read(struct inode *inode, u64 attr_ver, size_t num_read,
* reached the client fs yet. So the hole is not present there.
*/
if (!fc->writeback_cache) {
- loff_t pos = page_offset(ap->pages[0]) + num_read;
+ loff_t pos = folio_pos(ap->folios[0]) + num_read;
fuse_read_update_size(inode, pos, attr_ver);
}
}
@@ -868,14 +893,14 @@ static int fuse_do_readfolio(struct file *file, struct folio *folio)
struct inode *inode = folio->mapping->host;
struct fuse_mount *fm = get_fuse_mount(inode);
loff_t pos = folio_pos(folio);
- struct fuse_page_desc desc = { .length = PAGE_SIZE };
- struct page *page = &folio->page;
+ struct fuse_folio_desc desc = { .length = PAGE_SIZE };
struct fuse_io_args ia = {
.ap.args.page_zeroing = true,
.ap.args.out_pages = true,
- .ap.num_pages = 1,
- .ap.pages = &page,
- .ap.descs = &desc,
+ .ap.uses_folios = true,
+ .ap.num_folios = 1,
+ .ap.folios = &folio,
+ .ap.folio_descs = &desc,
};
ssize_t res;
u64 attr_ver;
@@ -934,8 +959,8 @@ static void fuse_readpages_end(struct fuse_mount *fm, struct fuse_args *args,
size_t num_read = args->out_args[0].size;
struct address_space *mapping = NULL;
- for (i = 0; mapping == NULL && i < ap->num_pages; i++)
- mapping = ap->pages[i]->mapping;
+ for (i = 0; mapping == NULL && i < ap->num_folios; i++)
+ mapping = ap->folios[i]->mapping;
if (mapping) {
struct inode *inode = mapping->host;
@@ -949,15 +974,12 @@ static void fuse_readpages_end(struct fuse_mount *fm, struct fuse_args *args,
fuse_invalidate_atime(inode);
}
- for (i = 0; i < ap->num_pages; i++) {
- struct folio *folio = page_folio(ap->pages[i]);
-
- folio_end_read(folio, !err);
- }
+ for (i = 0; i < ap->num_folios; i++)
+ folio_end_read(ap->folios[i], !err);
if (ia->ff)
fuse_file_put(ia->ff, false);
- fuse_io_free(ia);
+ fuse_io_folios_free(ia);
}
static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file)
@@ -965,8 +987,9 @@ static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file)
struct fuse_file *ff = file->private_data;
struct fuse_mount *fm = ff->fm;
struct fuse_args_pages *ap = &ia->ap;
- loff_t pos = page_offset(ap->pages[0]);
- size_t count = ap->num_pages << PAGE_SHIFT;
+ loff_t pos = folio_pos(ap->folios[0]);
+ /* Currently, all folios in FUSE are one page */
+ size_t count = ap->num_folios << PAGE_SHIFT;
ssize_t res;
int err;
@@ -977,7 +1000,7 @@ static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file)
/* Don't overflow end offset */
if (pos + (count - 1) == LLONG_MAX) {
count--;
- ap->descs[ap->num_pages - 1].length--;
+ ap->folio_descs[ap->num_folios - 1].length--;
}
WARN_ON((loff_t) (pos + count) < 0);
@@ -1038,16 +1061,16 @@ static void fuse_readahead(struct readahead_control *rac)
*/
break;
- ia = fuse_io_alloc(NULL, cur_pages);
+ ia = fuse_io_folios_alloc(NULL, cur_pages);
if (!ia)
return;
ap = &ia->ap;
- while (ap->num_pages < cur_pages &&
+ while (ap->num_folios < cur_pages &&
(folio = readahead_folio(rac)) != NULL) {
- ap->pages[ap->num_pages] = &folio->page;
- ap->descs[ap->num_pages].length = folio_size(folio);
- ap->num_pages++;
+ ap->folios[ap->num_folios] = folio;
+ ap->folio_descs[ap->num_folios].length = folio_size(folio);
+ ap->num_folios++;
}
fuse_send_readpages(ia, rac->file);
nr_pages -= cur_pages;
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h
index dcc0ab4bea78..2533313502de 100644
--- a/fs/fuse/fuse_i.h
+++ b/fs/fuse/fuse_i.h
@@ -1023,6 +1023,18 @@ static inline struct page **fuse_pages_alloc(unsigned int npages, gfp_t flags,
return pages;
}
+static inline struct folio **fuse_folios_alloc(unsigned int nfolios, gfp_t flags,
+ struct fuse_folio_desc **desc)
+{
+ struct folio **folios;
+
+ folios = kzalloc(nfolios * (sizeof(struct folio *) +
+ sizeof(struct fuse_folio_desc)), flags);
+ *desc = (void *) (folios + nfolios);
+
+ return folios;
+}
+
static inline void fuse_page_descs_length_init(struct fuse_page_desc *descs,
unsigned int index,
unsigned int nr_pages)
--
2.43.5
