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Diffstat (limited to 'fs/jffs2/file.c')
-rw-r--r--fs/jffs2/file.c88
1 files changed, 42 insertions, 46 deletions
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index e12cb145147e..13c18ccc13b0 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -23,10 +23,10 @@
static int jffs2_write_end(struct file *filp, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *pg, void *fsdata);
+ struct folio *folio, void *fsdata);
static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
loff_t pos, unsigned len,
- struct page **pagep, void **fsdata);
+ struct folio **foliop, void **fsdata);
static int jffs2_read_folio(struct file *filp, struct folio *folio);
int jffs2_fsync(struct file *filp, loff_t start, loff_t end, int datasync)
@@ -77,29 +77,27 @@ const struct address_space_operations jffs2_file_address_operations =
.write_end = jffs2_write_end,
};
-static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)
+static int jffs2_do_readpage_nolock(struct inode *inode, struct folio *folio)
{
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
- unsigned char *pg_buf;
+ unsigned char *kaddr;
int ret;
jffs2_dbg(2, "%s(): ino #%lu, page at offset 0x%lx\n",
- __func__, inode->i_ino, pg->index << PAGE_SHIFT);
+ __func__, inode->i_ino, folio->index << PAGE_SHIFT);
- BUG_ON(!PageLocked(pg));
+ BUG_ON(!folio_test_locked(folio));
- pg_buf = kmap(pg);
- /* FIXME: Can kmap fail? */
-
- ret = jffs2_read_inode_range(c, f, pg_buf, pg->index << PAGE_SHIFT,
+ kaddr = kmap_local_folio(folio, 0);
+ ret = jffs2_read_inode_range(c, f, kaddr, folio->index << PAGE_SHIFT,
PAGE_SIZE);
+ kunmap_local(kaddr);
if (!ret)
- SetPageUptodate(pg);
+ folio_mark_uptodate(folio);
- flush_dcache_page(pg);
- kunmap(pg);
+ flush_dcache_folio(folio);
jffs2_dbg(2, "readpage finished\n");
return ret;
@@ -107,7 +105,7 @@ static int jffs2_do_readpage_nolock (struct inode *inode, struct page *pg)
int __jffs2_read_folio(struct file *file, struct folio *folio)
{
- int ret = jffs2_do_readpage_nolock(folio->mapping->host, &folio->page);
+ int ret = jffs2_do_readpage_nolock(folio->mapping->host, folio);
folio_unlock(folio);
return ret;
}
@@ -125,9 +123,9 @@ static int jffs2_read_folio(struct file *file, struct folio *folio)
static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
loff_t pos, unsigned len,
- struct page **pagep, void **fsdata)
+ struct folio **foliop, void **fsdata)
{
- struct page *pg;
+ struct folio *folio;
struct inode *inode = mapping->host;
struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
@@ -206,29 +204,30 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
* page in read_cache_page(), which causes a deadlock.
*/
mutex_lock(&c->alloc_sem);
- pg = grab_cache_page_write_begin(mapping, index);
- if (!pg) {
- ret = -ENOMEM;
+ folio = __filemap_get_folio(mapping, index, FGP_WRITEBEGIN,
+ mapping_gfp_mask(mapping));
+ if (IS_ERR(folio)) {
+ ret = PTR_ERR(folio);
goto release_sem;
}
- *pagep = pg;
+ *foliop = folio;
/*
- * Read in the page if it wasn't already present. Cannot optimize away
- * the whole page write case until jffs2_write_end can handle the
+ * Read in the folio if it wasn't already present. Cannot optimize away
+ * the whole folio write case until jffs2_write_end can handle the
* case of a short-copy.
*/
- if (!PageUptodate(pg)) {
+ if (!folio_test_uptodate(folio)) {
mutex_lock(&f->sem);
- ret = jffs2_do_readpage_nolock(inode, pg);
+ ret = jffs2_do_readpage_nolock(inode, folio);
mutex_unlock(&f->sem);
if (ret) {
- unlock_page(pg);
- put_page(pg);
+ folio_unlock(folio);
+ folio_put(folio);
goto release_sem;
}
}
- jffs2_dbg(1, "end write_begin(). pg->flags %lx\n", pg->flags);
+ jffs2_dbg(1, "end write_begin(). folio->flags %lx\n", folio->flags);
release_sem:
mutex_unlock(&c->alloc_sem);
@@ -238,7 +237,7 @@ out_err:
static int jffs2_write_end(struct file *filp, struct address_space *mapping,
loff_t pos, unsigned len, unsigned copied,
- struct page *pg, void *fsdata)
+ struct folio *folio, void *fsdata)
{
/* Actually commit the write from the page cache page we're looking at.
* For now, we write the full page out each time. It sucks, but it's simple
@@ -252,16 +251,17 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
unsigned aligned_start = start & ~3;
int ret = 0;
uint32_t writtenlen = 0;
+ void *buf;
- jffs2_dbg(1, "%s(): ino #%lu, page at 0x%lx, range %d-%d, flags %lx\n",
- __func__, inode->i_ino, pg->index << PAGE_SHIFT,
- start, end, pg->flags);
+ jffs2_dbg(1, "%s(): ino #%lu, page at 0x%llx, range %d-%d, flags %lx\n",
+ __func__, inode->i_ino, folio_pos(folio),
+ start, end, folio->flags);
/* We need to avoid deadlock with page_cache_read() in
- jffs2_garbage_collect_pass(). So the page must be
+ jffs2_garbage_collect_pass(). So the folio must be
up to date to prevent page_cache_read() from trying
to re-lock it. */
- BUG_ON(!PageUptodate(pg));
+ BUG_ON(!folio_test_uptodate(folio));
if (end == PAGE_SIZE) {
/* When writing out the end of a page, write out the
@@ -276,8 +276,8 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
if (!ri) {
jffs2_dbg(1, "%s(): Allocation of raw inode failed\n",
__func__);
- unlock_page(pg);
- put_page(pg);
+ folio_unlock(folio);
+ folio_put(folio);
return -ENOMEM;
}
@@ -289,15 +289,11 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
ri->isize = cpu_to_je32((uint32_t)inode->i_size);
ri->atime = ri->ctime = ri->mtime = cpu_to_je32(JFFS2_NOW());
- /* In 2.4, it was already kmapped by generic_file_write(). Doesn't
- hurt to do it again. The alternative is ifdefs, which are ugly. */
- kmap(pg);
-
- ret = jffs2_write_inode_range(c, f, ri, page_address(pg) + aligned_start,
- (pg->index << PAGE_SHIFT) + aligned_start,
+ buf = kmap_local_folio(folio, aligned_start);
+ ret = jffs2_write_inode_range(c, f, ri, buf,
+ folio_pos(folio) + aligned_start,
end - aligned_start, &writtenlen);
-
- kunmap(pg);
+ kunmap_local(buf);
if (ret)
mapping_set_error(mapping, ret);
@@ -323,12 +319,12 @@ static int jffs2_write_end(struct file *filp, struct address_space *mapping,
it gets reread */
jffs2_dbg(1, "%s(): Not all bytes written. Marking page !uptodate\n",
__func__);
- ClearPageUptodate(pg);
+ folio_clear_uptodate(folio);
}
jffs2_dbg(1, "%s() returning %d\n",
__func__, writtenlen > 0 ? writtenlen : ret);
- unlock_page(pg);
- put_page(pg);
+ folio_unlock(folio);
+ folio_put(folio);
return writtenlen > 0 ? writtenlen : ret;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-10-21 13:35:33 +0300