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jffs2: Remove jffs2_gc_fetch_page and jffs2_gc_release_page

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Merge these two helpers into the only callers to get rid of some
amazingly bad calling conventions.

Suggested-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Christoph Hellwig 2019-07-24 09:15:25 +02:00 committed by Richard Weinberger
parent f2538f9993
commit 61b875e88a
3 changed files with 13 additions and 38 deletions
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27
fs/jffs2/fs.c
View File

@ -678,33 +678,6 @@ struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
return JFFS2_INODE_INFO(inode);
}
unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
struct jffs2_inode_info *f,
unsigned long offset,
unsigned long *priv)
{
struct inode *inode = OFNI_EDONI_2SFFJ(f);
struct page *pg;
pg = read_cache_page(inode->i_mapping, offset >> PAGE_SHIFT,
jffs2_do_readpage_unlock, inode);
if (IS_ERR(pg))
return (void *)pg;
*priv = (unsigned long)pg;
return kmap(pg);
}
void jffs2_gc_release_page(struct jffs2_sb_info *c,
unsigned char *ptr,
unsigned long *priv)
{
struct page *pg = (void *)*priv;
kunmap(pg);
put_page(pg);
}
static int jffs2_flash_setup(struct jffs2_sb_info *c) {
int ret = 0;

21
fs/jffs2/gc.c
View File

@ -1165,12 +1165,13 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
struct jffs2_inode_info *f, struct jffs2_full_dnode *fn,
uint32_t start, uint32_t end)
{
struct inode *inode = OFNI_EDONI_2SFFJ(f);
struct jffs2_full_dnode *new_fn;
struct jffs2_raw_inode ri;
uint32_t alloclen, offset, orig_end, orig_start;
int ret = 0;
unsigned char *comprbuf = NULL, *writebuf;
unsigned long pg;
struct page *page;
unsigned char *pg_ptr;
memset(&ri, 0, sizeof(ri));
@ -1325,15 +1326,18 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
* end up here trying to GC the *same* page that jffs2_write_begin() is
* trying to write out, read_cache_page() will not deadlock. */
mutex_unlock(&f->sem);
pg_ptr = jffs2_gc_fetch_page(c, f, start, &pg);
mutex_lock(&f->sem);
if (IS_ERR(pg_ptr)) {
page = read_cache_page(inode->i_mapping, start >> PAGE_SHIFT,
jffs2_do_readpage_unlock, inode);
if (IS_ERR(page)) {
pr_warn("read_cache_page() returned error: %ld\n",
PTR_ERR(pg_ptr));
return PTR_ERR(pg_ptr);
PTR_ERR(page));
mutex_lock(&f->sem);
return PTR_ERR(page);
}
pg_ptr = kmap(page);
mutex_lock(&f->sem);
offset = start;
while(offset < orig_end) {
uint32_t datalen;
@ -1396,6 +1400,7 @@ static int jffs2_garbage_collect_dnode(struct jffs2_sb_info *c, struct jffs2_era
}
}
jffs2_gc_release_page(c, pg_ptr, &pg);
kunmap(page);
put_page(page);
return ret;
}

3
fs/jffs2/os-linux.h
View File

@ -183,9 +183,6 @@ unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
struct jffs2_inode_info *f,
unsigned long offset,
unsigned long *priv);
void jffs2_gc_release_page(struct jffs2_sb_info *c,
unsigned char *pg,
unsigned long *priv);
void jffs2_flash_cleanup(struct jffs2_sb_info *c);