@@ -194,10 +194,10 @@ static void cachefiles_read_copier(struct fscache_operation *_op)
error = -EIO;
}
- page_cache_release(monitor->back_page);
+ put_page(monitor->back_page);
fscache_end_io(op, monitor->netfs_page, error);
- page_cache_release(monitor->netfs_page);
+ put_page(monitor->netfs_page);
fscache_retrieval_complete(op, 1);
fscache_put_retrieval(op);
kfree(monitor);
@@ -288,8 +288,8 @@ monitor_backing_page:
_debug("- monitor add");
/* install the monitor */
- page_cache_get(monitor->netfs_page);
- page_cache_get(backpage);
+ get_page(monitor->netfs_page);
+ get_page(backpage);
monitor->back_page = backpage;
monitor->monitor.private = backpage;
add_page_wait_queue(backpage, &monitor->monitor);
@@ -310,7 +310,7 @@ backing_page_already_present:
_debug("- present");
if (newpage) {
- page_cache_release(newpage);
+ put_page(newpage);
newpage = NULL;
}
@@ -342,7 +342,7 @@ success:
out:
if (backpage)
- page_cache_release(backpage);
+ put_page(backpage);
if (monitor) {
fscache_put_retrieval(monitor->op);
kfree(monitor);
@@ -363,7 +363,7 @@ io_error:
goto out;
nomem_page:
- page_cache_release(newpage);
+ put_page(newpage);
nomem_monitor:
fscache_put_retrieval(monitor->op);
kfree(monitor);
@@ -530,7 +530,7 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
netpage->index, cachefiles_gfp);
if (ret < 0) {
if (ret == -EEXIST) {
- page_cache_release(netpage);
+ put_page(netpage);
fscache_retrieval_complete(op, 1);
continue;
}
@@ -538,10 +538,10 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
}
/* install a monitor */
- page_cache_get(netpage);
+ get_page(netpage);
monitor->netfs_page = netpage;
- page_cache_get(backpage);
+ get_page(backpage);
monitor->back_page = backpage;
monitor->monitor.private = backpage;
add_page_wait_queue(backpage, &monitor->monitor);
@@ -555,10 +555,10 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
unlock_page(backpage);
}
- page_cache_release(backpage);
+ put_page(backpage);
backpage = NULL;
- page_cache_release(netpage);
+ put_page(netpage);
netpage = NULL;
continue;
@@ -603,7 +603,7 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
netpage->index, cachefiles_gfp);
if (ret < 0) {
if (ret == -EEXIST) {
- page_cache_release(netpage);
+ put_page(netpage);
fscache_retrieval_complete(op, 1);
continue;
}
@@ -612,14 +612,14 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
copy_highpage(netpage, backpage);
- page_cache_release(backpage);
+ put_page(backpage);
backpage = NULL;
fscache_mark_page_cached(op, netpage);
/* the netpage is unlocked and marked up to date here */
fscache_end_io(op, netpage, 0);
- page_cache_release(netpage);
+ put_page(netpage);
netpage = NULL;
fscache_retrieval_complete(op, 1);
continue;
@@ -632,11 +632,11 @@ static int cachefiles_read_backing_file(struct cachefiles_object *object,
out:
/* tidy up */
if (newpage)
- page_cache_release(newpage);
+ put_page(newpage);
if (netpage)
- page_cache_release(netpage);
+ put_page(netpage);
if (backpage)
- page_cache_release(backpage);
+ put_page(backpage);
if (monitor) {
fscache_put_retrieval(op);
kfree(monitor);
@@ -644,7 +644,7 @@ out:
list_for_each_entry_safe(netpage, _n, list, lru) {
list_del(&netpage->lru);
- page_cache_release(netpage);
+ put_page(netpage);
fscache_retrieval_complete(op, 1);
}
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: David Howells <dhowells@redhat.com> --- fs/cachefiles/rdwr.c | 38 +++++++++++++++++++------------------- 1 file changed, 19 insertions(+), 19 deletions(-)