With the new netfs read helper functions, we won't need a lot of this
infrastructure as it handles the pagecache pages itself. Rip out the
read handling for now, and much of the old infrastructure that deals in
individual pages.
The cookie handling is mostly unchanged, however.
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: ceph-devel@xxxxxxxxxxxxxxx
Cc: linux-cachefs@xxxxxxxxxx
Cc: linux-fsdevel@xxxxxxxxxxxxxxx
---
fs/ceph/addr.c | 31 +-----------
fs/ceph/cache.c | 125 ------------------------------------------------
fs/ceph/cache.h | 91 +----------------------------------
fs/ceph/caps.c | 9 ----
4 files changed, 3 insertions(+), 253 deletions(-)
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 950552944436..2b17bb36e548 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -155,8 +155,6 @@ static void ceph_invalidatepage(struct page *page, unsigned int offset,
return;
}
- ceph_invalidate_fscache_page(inode, page);
-
WARN_ON(!PageLocked(page));
if (!PagePrivate(page))
return;
@@ -175,10 +173,6 @@ static int ceph_releasepage(struct page *page, gfp_t g)
dout("%p releasepage %p idx %lu (%sdirty)\n", page->mapping->host,
page, page->index, PageDirty(page) ? "" : "not ");
- /* Can we release the page from the cache? */
- if (!ceph_release_fscache_page(page, g))
- return 0;
-
return !PagePrivate(page);
}
@@ -213,10 +207,6 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
return 0;
}
- err = ceph_readpage_from_fscache(inode, page);
- if (err == 0)
- return -EINPROGRESS;
-
dout("readpage ino %llx.%llx file %p off %llu len %llu page %p index %lu\n",
vino.ino, vino.snap, filp, off, len, page, page->index);
req = ceph_osdc_new_request(osdc, &ci->i_layout, vino, off, &len, 0, 1,
@@ -241,7 +231,6 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
if (err == -ENOENT)
err = 0;
if (err < 0) {
- ceph_fscache_readpage_cancel(inode, page);
if (err == -EBLOCKLISTED)
fsc->blocklisted = true;
goto out;
@@ -253,8 +242,6 @@ static int ceph_do_readpage(struct file *filp, struct page *page)
flush_dcache_page(page);
SetPageUptodate(page);
- ceph_readpage_to_fscache(inode, page);
-
out:
return err < 0 ? err : 0;
}
@@ -294,10 +281,8 @@ static void finish_read(struct ceph_osd_request *req)
for (i = 0; i < num_pages; i++) {
struct page *page = osd_data->pages[i];
- if (rc < 0 && rc != -ENOENT) {
- ceph_fscache_readpage_cancel(inode, page);
+ if (rc < 0 && rc != -ENOENT)
goto unlock;
- }
if (bytes < (int)PAGE_SIZE) {
/* zero (remainder of) page */
int s = bytes < 0 ? 0 : bytes;
@@ -307,7 +292,6 @@ static void finish_read(struct ceph_osd_request *req)
page->index);
flush_dcache_page(page);
SetPageUptodate(page);
- ceph_readpage_to_fscache(inode, page);
unlock:
unlock_page(page);
put_page(page);
@@ -408,7 +392,6 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx,
page->index);
if (add_to_page_cache_lru(page, &inode->i_data, page->index,
GFP_KERNEL)) {
- ceph_fscache_uncache_page(inode, page);
put_page(page);
dout("start_read %p add_to_page_cache failed %p\n",
inode, page);
@@ -440,10 +423,8 @@ static int start_read(struct inode *inode, struct ceph_rw_context *rw_ctx,
return nr_pages;
out_pages:
- for (i = 0; i < nr_pages; ++i) {
- ceph_fscache_readpage_cancel(inode, pages[i]);
+ for (i = 0; i < nr_pages; ++i)
unlock_page(pages[i]);
- }
ceph_put_page_vector(pages, nr_pages, false);
out_put:
ceph_osdc_put_request(req);
@@ -471,12 +452,6 @@ static int ceph_readpages(struct file *file, struct address_space *mapping,
if (ceph_inode(inode)->i_inline_version != CEPH_INLINE_NONE)
return -EINVAL;
- rc = ceph_readpages_from_fscache(mapping->host, mapping, page_list,
- &nr_pages);
-
- if (rc == 0)
- goto out;
-
rw_ctx = ceph_find_rw_context(fi);
max = fsc->mount_options->rsize >> PAGE_SHIFT;
dout("readpages %p file %p ctx %p nr_pages %d max %d\n",
@@ -487,8 +462,6 @@ static int ceph_readpages(struct file *file, struct address_space *mapping,
goto out;
}
out:
- ceph_fscache_readpages_cancel(inode, page_list);
-
dout("readpages %p file %p ret %d\n", inode, file, rc);
return rc;
}
diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c
index 2f5cb6bc78e1..9cfadbb86568 100644
--- a/fs/ceph/cache.c
+++ b/fs/ceph/cache.c
@@ -173,7 +173,6 @@ void ceph_fscache_unregister_inode_cookie(struct ceph_inode_info* ci)
ci->fscache = NULL;
- fscache_uncache_all_inode_pages(cookie, &ci->vfs_inode);
fscache_relinquish_cookie(cookie, &ci->i_vino, false);
}
@@ -194,7 +193,6 @@ void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp)
dout("fscache_file_set_cookie %p %p disabling cache\n",
inode, filp);
fscache_disable_cookie(ci->fscache, &ci->i_vino, false);
- fscache_uncache_all_inode_pages(ci->fscache, inode);
} else {
fscache_enable_cookie(ci->fscache, &ci->i_vino, i_size_read(inode),
ceph_fscache_can_enable, inode);
@@ -205,108 +203,6 @@ void ceph_fscache_file_set_cookie(struct inode *inode, struct file *filp)
}
}
-static void ceph_readpage_from_fscache_complete(struct page *page, void *data, int error)
-{
- if (!error)
- SetPageUptodate(page);
-
- unlock_page(page);
-}
-
-static inline bool cache_valid(struct ceph_inode_info *ci)
-{
- return ci->i_fscache_gen == ci->i_rdcache_gen;
-}
-
