diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 405ebd609b879ce48762b843ae7c90c820afd433..8beecbcd967901d6078c8ec293f09ed7441a480a 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -1,6 +1,6 @@
/* dir.c: AFS filesystem directory handling
*
- * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2002, 2018 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*
* This program is free software; you can redistribute it and/or
@@ -13,8 +13,10 @@
#include <linux/fs.h>
#include <linux/namei.h>
#include <linux/pagemap.h>
+#include <linux/swap.h>
#include <linux/ctype.h>
#include <linux/sched.h>
+#include <linux/task_io_accounting_ops.h>
#include "internal.h"
static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
@@ -39,6 +41,14 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags);
+static int afs_dir_releasepage(struct page *page, gfp_t gfp_flags);
+static void afs_dir_invalidatepage(struct page *page, unsigned int offset,
+ unsigned int length);
+
+static int afs_dir_set_page_dirty(struct page *page)
+{
+ BUG(); /* This should never happen. */
+}
const struct file_operations afs_dir_file_operations = {
.open = afs_dir_open,
@@ -63,6 +73,12 @@ const struct inode_operations afs_dir_inode_operations = {
.listxattr = afs_listxattr,
};
+const struct address_space_operations afs_dir_aops = {
+ .set_page_dirty = afs_dir_set_page_dirty,
+ .releasepage = afs_dir_releasepage,
+ .invalidatepage = afs_dir_invalidatepage,
+};
+
const struct dentry_operations afs_fs_dentry_operations = {
.d_revalidate = afs_d_revalidate,
.d_delete = afs_d_delete,
@@ -140,32 +156,17 @@ struct afs_lookup_cookie {
/*
* check that a directory page is valid
*/
-bool afs_dir_check_page(struct inode *dir, struct page *page)
+static bool afs_dir_check_page(struct afs_vnode *dvnode, struct page *page,
+ loff_t i_size)
{
struct afs_dir_page *dbuf;
- struct afs_vnode *vnode = AFS_FS_I(dir);
- loff_t latter, i_size, off;
+ loff_t latter, off;
int tmp, qty;
-#if 0
- /* check the page count */
- qty = desc.size / sizeof(dbuf->blocks[0]);
- if (qty == 0)
- goto error;
-
- if (page->index == 0 && qty != ntohs(dbuf->blocks[0].pagehdr.npages)) {
- printk("kAFS: %s(%lu): wrong number of dir blocks %d!=%hu\n",
- __func__, dir->i_ino, qty,
- ntohs(dbuf->blocks[0].pagehdr.npages));
- goto error;
- }
-#endif
-
/* Determine how many magic numbers there should be in this page, but
* we must take care because the directory may change size under us.
*/
off = page_offset(page);
- i_size = i_size_read(dir);
if (i_size <= off)
goto checked;
@@ -181,59 +182,21 @@ bool afs_dir_check_page(struct inode *dir, struct page *page)
for (tmp = 0; tmp < qty; tmp++) {
if (dbuf->blocks[tmp].pagehdr.magic != AFS_DIR_MAGIC) {
printk("kAFS: %s(%lx): bad magic %d/%d is %04hx\n",
- __func__, dir->i_ino, tmp, qty,
+ __func__, dvnode->vfs_inode.i_ino, tmp, qty,
ntohs(dbuf->blocks[tmp].pagehdr.magic));
- trace_afs_dir_check_failed(vnode, off, i_size);
+ trace_afs_dir_check_failed(dvnode, off, i_size);
goto error;
}
}
checked:
- afs_stat_v(vnode, n_read_dir);
- SetPageChecked(page);
+ afs_stat_v(dvnode, n_read_dir);
return true;
error:
- SetPageError(page);
return false;
}
-/*
- * discard a page cached in the pagecache
- */
-static inline void afs_dir_put_page(struct page *page)
-{
- kunmap(page);
- unlock_page(page);
- put_page(page);
-}
-
-/*
- * get a page into the pagecache
- */
-static struct page *afs_dir_get_page(struct inode *dir, unsigned long index,
- struct key *key)
-{
- struct page *page;
- _enter("{%lu},%lu", dir->i_ino, index);
-
- page = read_cache_page(dir->i_mapping, index, afs_page_filler, key);
- if (!IS_ERR(page)) {
- lock_page(page);
- kmap(page);
- if (unlikely(!PageChecked(page))) {
- if (PageError(page))
- goto fail;
- }
- }
- return page;
-
-fail:
- afs_dir_put_page(page);
- _leave(" = -EIO");
- return ERR_PTR(-EIO);
-}
-
/*
* open an AFS directory file
*/
@@ -250,6 +213,147 @@ static int afs_dir_open(struct inode *inode, struct file *file)
return afs_open(inode, file);
}
+/*
+ * Read the directory into the pagecache in one go, scrubbing the previous
+ * contents. The list of pages is returned, pinning them so that they don't
+ * get reclaimed during the iteration.
+ */
+static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key)
+{
+ struct afs_read *req;
+ loff_t i_size;
+ int nr_pages, nr_inline, i, n;
+ int ret = -ENOMEM;
+
+retry:
+ i_size = i_size_read(&dvnode->vfs_inode);
+ if (i_size < 2048)
+ return ERR_PTR(-EIO);
+ if (i_size > 2048 * 1024)
+ return ERR_PTR(-EFBIG);
+
+ _enter("%llu", i_size);
+
+ /* Get a request record to hold the page list. We want to hold it
+ * inline if we can, but we don't want to make an order 1 allocation.
+ */
+ nr_pages = (i_size + PAGE_SIZE - 1) / PAGE_SIZE;
+ nr_inline = nr_pages;
+ if (nr_inline > (PAGE_SIZE - sizeof(*req)) / sizeof(struct page *))
+ nr_inline = 0;
+
+ req = kzalloc(sizeof(*req) + sizeof(struct page *) * nr_inline,
+ GFP_KERNEL);
+ if (!req)
+ return ERR_PTR(-ENOMEM);
+
+ refcount_set(&req->usage, 1);
+ req->nr_pages = nr_pages;
+ req->actual_len = i_size; /* May change */
+ req->len = nr_pages * PAGE_SIZE; /* We can ask for more than there is */
+ req->data_version = dvnode->status.data_version; /* May change */
+ if (nr_inline > 0) {
+ req->pages = req->array;
+ } else {
+ req->pages = kcalloc(nr_pages, sizeof(struct page *),
+ GFP_KERNEL);
+ if (!req->pages)
+ goto error;
+ }
+
+ /* Get a list of all the pages that hold or will hold the directory
+ * content. We need to fill in any gaps that we might find where the
+ * memory reclaimer has been at work. If there are any gaps, we will
+ * need to reread the entire directory contents.
+ */
+ i = 0;
+ do {
+ n = find_get_pages_contig(dvnode->vfs_inode.i_mapping, i,
+ req->nr_pages - i,
+ req->pages + i);
+ _debug("find %u at %u/%u", n, i, req->nr_pages);
+ if (n == 0) {
+ gfp_t gfp = dvnode->vfs_inode.i_mapping->gfp_mask;
+
+ if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ afs_stat_v(dvnode, n_inval);
+
+ ret = -ENOMEM;
+ req->pages[i] = __page_cache_alloc(gfp);
+ if (!req->pages[i])
+ goto error;
+ ret = add_to_page_cache_lru(req->pages[i],
+ dvnode->vfs_inode.i_mapping,
+ i, gfp);
+ if (ret < 0)
+ goto error;
+
+ set_page_private(req->pages[i], 1);
+ SetPagePrivate(req->pages[i]);
+ unlock_page(req->pages[i]);
+ i++;
+ } else {
+ i += n;
+ }
+ } while (i < req->nr_pages);
+
+ /* If we're going to reload, we need to lock all the pages to prevent
+ * races.
+ */
+ if (!test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) {
+ ret = -ERESTARTSYS;
+ for (i = 0; i < req->nr_pages; i++)
+ if (lock_page_killable(req->pages[i]) < 0)
+ goto error_unlock;
+
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ goto success;
+
+ ret = afs_fetch_data(dvnode, key, req);
+ if (ret < 0)
+ goto error_unlock_all;
+
+ task_io_account_read(PAGE_SIZE * req->nr_pages);
+
+ if (req->len < req->file_size)
+ goto content_has_grown;
+
+ /* Validate the data we just read. */
+ ret = -EIO;
+ for (i = 0; i < req->nr_pages; i++)
+ if (!afs_dir_check_page(dvnode, req->pages[i],
+ req->actual_len))
+ goto error_unlock_all;
+
+ // TODO: Trim excess pages
+
+ set_bit(AFS_VNODE_DIR_VALID, &dvnode->flags);
+ }
+
+success:
+ i = req->nr_pages;
+ while (i > 0)
+ unlock_page(req->pages[--i]);
+ return req;
+
+error_unlock_all:
+ i = req->nr_pages;
+error_unlock:
+ while (i > 0)
+ unlock_page(req->pages[--i]);
+error:
+ afs_put_read(req);
+ _leave(" = %d", ret);
+ return ERR_PTR(ret);
+
+content_has_grown:
+ i = req->nr_pages;
+ while (i > 0)
+ unlock_page(req->pages[--i]);
+ afs_put_read(req);
+ goto retry;
+}
+
/*
* deal with one block in an AFS directory
*/
@@ -347,8 +451,10 @@ static int afs_dir_iterate_block(struct dir_context *ctx,
static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
struct key *key)
{
+ struct afs_vnode *dvnode = AFS_FS_I(dir);
union afs_dir_block *dblock;
struct afs_dir_page *dbuf;
+ struct afs_read *req;
struct page *page;
unsigned blkoff, limit;
int ret;
@@ -360,25 +466,32 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
return -ESTALE;
}
+ req = afs_read_dir(dvnode, key);
+ if (IS_ERR(req))
+ return PTR_ERR(req);
+
/* round the file position up to the next entry boundary */
ctx->pos += sizeof(union afs_dirent) - 1;
ctx->pos &= ~(sizeof(union afs_dirent) - 1);
/* walk through the blocks in sequence */
ret = 0;
- while (ctx->pos < dir->i_size) {
+ while (ctx->pos < req->actual_len) {
blkoff = ctx->pos & ~(sizeof(union afs_dir_block) - 1);
- /* fetch the appropriate page from the directory */
- page = afs_dir_get_page(dir, blkoff / PAGE_SIZE, key);
- if (IS_ERR(page)) {
- ret = PTR_ERR(page);
+ /* Fetch the appropriate page from the directory and re-add it
+ * to the LRU.
+ */
+ page = req->pages[blkoff / PAGE_SIZE];
+ if (!page) {
+ ret = -EIO;
break;
}
+ mark_page_accessed(page);
limit = blkoff & ~(PAGE_SIZE - 1);
- dbuf = page_address(page);
+ dbuf = kmap(page);
/* deal with the individual blocks stashed on this page */
do {
@@ -386,7 +499,7 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
sizeof(union afs_dir_block)];
ret = afs_dir_iterate_block(ctx, dblock, blkoff);
if (ret != 1) {
- afs_dir_put_page(page);
+ kunmap(page);
goto out;
}
@@ -394,11 +507,12 @@ static int afs_dir_iterate(struct inode *dir, struct dir_context *ctx,
} while (ctx->pos < dir->i_size && blkoff < limit);
- afs_dir_put_page(page);
+ kunmap(page);
ret = 0;
}
out:
+ afs_put_read(req);
_leave(" = %d", ret);
return ret;
}
@@ -1491,3 +1605,47 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
_leave(" = %d", ret);
return ret;
}
+
+/*
+ * Release a directory page and clean up its private state if it's not busy
+ * - return true if the page can now be released, false if not
+ */
+static int afs_dir_releasepage(struct page *page, gfp_t gfp_flags)
+{
+ struct afs_vnode *dvnode = AFS_FS_I(page->mapping->host);
+
+ _enter("{{%x:%u}[%lu]}", dvnode->fid.vid, dvnode->fid.vnode, page->index);
+
+ set_page_private(page, 0);
+ ClearPagePrivate(page);
+
+ /* The directory will need reloading. */
+ if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ afs_stat_v(dvnode, n_relpg);
+ return 1;
+}
+
+/*
+ * invalidate part or all of a page
+ * - release a page and clean up its private data if offset is 0 (indicating
+ * the entire page)
+ */
+static void afs_dir_invalidatepage(struct page *page, unsigned int offset,
+ unsigned int length)
+{
+ struct afs_vnode *dvnode = AFS_FS_I(page->mapping->host);
+
+ _enter("{%lu},%u,%u", page->index, offset, length);
+
+ BUG_ON(!PageLocked(page));
+
+ /* The directory will need reloading. */
+ if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
+ afs_stat_v(dvnode, n_inval);
+
+ /* we clean up only if the entire page is being invalidated */
+ if (offset == 0 && length == PAGE_SIZE) {
+ set_page_private(page, 0);
+ ClearPagePrivate(page);
+ }
+}
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 79e665a35feaa4c37b2a6a66f4ee83e17cd2f3c8..91ff1335fd33360547a0b87a57aede40ce3346ca 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -187,10 +187,12 @@ void afs_put_read(struct afs_read *req)
{
int i;
- if (atomic_dec_and_test(&req->usage)) {
+ if (refcount_dec_and_test(&req->usage)) {
for (i = 0; i < req->nr_pages; i++)
if (req->pages[i])
put_page(req->pages[i]);
+ if (req->pages != req->array)
+ kfree(req->pages);
kfree(req);
}
}
@@ -297,10 +299,11 @@ int afs_page_filler(void *data, struct page *page)
* end of the file, the server will return a short read and the
* unmarshalling code will clear the unfilled space.
*/
- atomic_set(&req->usage, 1);
+ refcount_set(&req->usage, 1);
req->pos = (loff_t)page->index << PAGE_SHIFT;
req->len = PAGE_SIZE;
req->nr_pages = 1;
+ req->pages = req->array;
req->pages[0] = page;
get_page(page);
@@ -309,10 +312,6 @@ int afs_page_filler(void *data, struct page *page)
ret = afs_fetch_data(vnode, key, req);
afs_put_read(req);
- if (ret >= 0 && S_ISDIR(inode->i_mode) &&
- !afs_dir_check_page(inode, page))
- ret = -EIO;
-
if (ret < 0) {
if (ret == -ENOENT) {
_debug("got NOENT from server"
@@ -447,10 +446,11 @@ static int afs_readpages_one(struct file *file, struct address_space *mapping,
if (!req)
return -ENOMEM;
- atomic_set(&req->usage, 1);
+ refcount_set(&req->usage, 1);
req->page_done = afs_readpages_page_done;
req->pos = first->index;
req->pos <<= PAGE_SHIFT;
+ req->pages = req->array;
/* Transfer the pages to the request. We add them in until one fails
* to add to the LRU and then we stop (as that'll make a hole in the
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index f7570d229dcc4d8f304913b23d59e0fcdcd3563f..b66ff0dc8a5a34f9944ab1fc003eb9e10bb24b73 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -101,8 +101,12 @@ void afs_update_inode_from_status(struct afs_vnode *vnode,
vnode->fid.vid, vnode->fid.vnode,
(unsigned long long) *expected_version);
vnode->invalid_before = status->data_version;
- set_bit(AFS_VNODE_DIR_MODIFIED, &vnode->flags);
- set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
+ if (vnode->status.type == AFS_FTYPE_DIR) {
+ if (test_and_clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
+ afs_stat_v(vnode, n_inval);
+ } else {
+ set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
+ }
}
}
@@ -119,7 +123,7 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
struct afs_file_status *status,
struct afs_vnode *vnode,
const afs_dataversion_t *expected_version,
- afs_dataversion_t *_version)
+ struct afs_read *read_req)
{
const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
u64 data_version, size;
@@ -197,8 +201,11 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
status->data_version = data_version;
flags |= AFS_VNODE_DATA_CHANGED;
}
- if (_version)
- *_version = data_version;
+
+ if (read_req) {
+ read_req->data_version = data_version;
+ read_req->file_size = size;
+ }
*_bp = (const void *)*_bp + sizeof(*xdr);
@@ -543,8 +550,7 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
bp = call->buffer;
if (xdr_decode_AFSFetchStatus(&bp, &vnode->status, vnode,
- &vnode->status.data_version,
- &req->new_version) < 0)
+ &vnode->status.data_version, req) < 0)
return -EBADMSG;
xdr_decode_AFSCallBack(call, vnode, &bp);
if (call->reply[1])
@@ -628,7 +634,7 @@ static int afs_fs_fetch_data64(struct afs_fs_cursor *fc, struct afs_read *req)
bp[6] = 0;
bp[7] = htonl(lower_32_bits(req->len));
- atomic_inc(&req->usage);
+ refcount_inc(&req->usage);
call->cb_break = fc->cb_break;
afs_use_fs_server(call, fc->cbi);
trace_afs_make_fs_call(call, &vnode->fid);
@@ -671,7 +677,7 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_read *req)
bp[4] = htonl(lower_32_bits(req->pos));
bp[5] = htonl(lower_32_bits(req->len));
- atomic_inc(&req->usage);
+ refcount_inc(&req->usage);
call->cb_break = fc->cb_break;
afs_use_fs_server(call, fc->cbi);
trace_afs_make_fs_call(call, &vnode->fid);
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 07f450513f3e95a389f1fd24fa39676df3c4018f..69bcfb82dd692126b0828b6016c5139bda2cf054 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -53,11 +53,13 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key)
inode->i_mode = S_IFREG | vnode->status.mode;
inode->i_op = &afs_file_inode_operations;
inode->i_fop = &afs_file_operations;
+ inode->i_mapping->a_ops = &afs_fs_aops;
break;
case AFS_FTYPE_DIR:
inode->i_mode = S_IFDIR | vnode->status.mode;
inode->i_op = &afs_dir_inode_operations;
inode->i_fop = &afs_dir_file_operations;
+ inode->i_mapping->a_ops = &afs_dir_aops;
break;
case AFS_FTYPE_SYMLINK:
/* Symlinks with a mode of 0644 are actually mountpoints. */
@@ -69,9 +71,11 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key)
inode->i_mode = S_IFDIR | 0555;
inode->i_op = &afs_mntpt_inode_operations;
inode->i_fop = &afs_mntpt_file_operations;
+ inode->i_mapping->a_ops = &afs_fs_aops;
} else {
inode->i_mode = S_IFLNK | vnode->status.mode;
inode->i_op = &afs_symlink_inode_operations;
+ inode->i_mapping->a_ops = &afs_fs_aops;
}
inode_nohighmem(inode);
break;
@@ -82,15 +86,9 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key)
}
inode->i_blocks = 0;
- inode->i_mapping->a_ops = &afs_fs_aops;
vnode->invalid_before = vnode->status.data_version;
read_sequnlock_excl(&vnode->cb_lock);
-
-#ifdef CONFIG_AFS_FSCACHE
- if (vnode->status.size > 0)
- fscache_attr_changed(vnode->cache);
-#endif
return 0;
}
@@ -247,6 +245,11 @@ static void afs_get_inode_cache(struct afs_vnode *vnode)
} __packed key;
struct afs_vnode_cache_aux aux;
+ if (vnode->status.type == AFS_FTYPE_DIR) {
+ vnode->cache = NULL;
+ return;
+ }
+
key.vnode_id = vnode->fid.vnode;
key.unique = vnode->fid.unique;
key.vnode_id_ext[0] = 0;
@@ -338,10 +341,6 @@ struct inode *afs_iget(struct super_block *sb, struct key *key,
/* failure */
bad_inode:
-#ifdef CONFIG_AFS_FSCACHE
- fscache_relinquish_cookie(vnode->cache, NULL, ret == -ENOENT);
- vnode->cache = NULL;
-#endif
iget_failed(inode);
_leave(" = %d [bad]", ret);
return ERR_PTR(ret);
@@ -355,9 +354,6 @@ void afs_zap_data(struct afs_vnode *vnode)
{
_enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
- if (S_ISDIR(vnode->vfs_inode.i_mode))
- afs_stat_v(vnode, n_inval);
-
#ifdef CONFIG_AFS_FSCACHE
fscache_invalidate(vnode->cache);
#endif
@@ -399,7 +395,7 @@ int afs_validate(struct afs_vnode *vnode, struct key *key)
if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {
if (vnode->cb_s_break != vnode->cb_interest->server->cb_s_break) {
vnode->cb_s_break = vnode->cb_interest->server->cb_s_break;
- } else if (!test_bit(AFS_VNODE_DIR_MODIFIED, &vnode->flags) &&
+ } else if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags) &&
!test_bit(AFS_VNODE_ZAP_DATA, &vnode->flags) &&
vnode->cb_expires_at - 10 > now) {
valid = true;
@@ -445,8 +441,6 @@ int afs_validate(struct afs_vnode *vnode, struct key *key)
* different */
if (test_and_clear_bit(AFS_VNODE_ZAP_DATA, &vnode->flags))
afs_zap_data(vnode);
-
- clear_bit(AFS_VNODE_DIR_MODIFIED, &vnode->flags);
mutex_unlock(&vnode->validate_lock);
valid:
_leave(" = 0");
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index b6ec46ae03c3dbfea532ba83baeddf56de1be65d..86f3066d9ab0dcbd029d5bf2cac053f9cd8b7d8f 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -174,12 +174,14 @@ struct afs_read {
loff_t len; /* How much we're asking for */
loff_t actual_len; /* How much we're actually getting */
loff_t remain; /* Amount remaining */
- afs_dataversion_t new_version; /* Version number returned by server */
- atomic_t usage;
+ loff_t file_size; /* File size returned by server */
+ afs_dataversion_t data_version; /* Version number returned by server */
+ refcount_t usage;
unsigned int index; /* Which page we're reading into */
unsigned int nr_pages;
void (*page_done)(struct afs_call *, struct afs_read *);
- struct page *pages[];
+ struct page **pages;
+ struct page *array[];
};
/*
@@ -267,6 +269,7 @@ struct afs_net {
atomic_t n_lookup; /* Number of lookups done */
atomic_t n_reval; /* Number of dentries needing revalidation */
atomic_t n_inval; /* Number of invalidations by the server */
+ atomic_t n_relpg; /* Number of invalidations by releasepage */
atomic_t n_read_dir; /* Number of directory pages read */
};
@@ -491,7 +494,7 @@ struct afs_vnode {
unsigned long flags;
#define AFS_VNODE_CB_PROMISED 0 /* Set if vnode has a callback promise */
#define AFS_VNODE_UNSET 1 /* set if vnode attributes not yet set */
-#define AFS_VNODE_DIR_MODIFIED 2 /* set if dir vnode's data modified */
+#define AFS_VNODE_DIR_VALID 2 /* Set if dir contents are valid */
#define AFS_VNODE_ZAP_DATA 3 /* set if vnode's data should be invalidated */
#define AFS_VNODE_DELETED 4 /* set if vnode deleted on server */
#define AFS_VNODE_MOUNTPOINT 5 /* set if vnode is a mountpoint symlink */
@@ -671,9 +674,9 @@ extern bool afs_cm_incoming_call(struct afs_call *);
*/
extern const struct file_operations afs_dir_file_operations;
extern const struct inode_operations afs_dir_inode_operations;
+extern const struct address_space_operations afs_dir_aops;
extern const struct dentry_operations afs_fs_dentry_operations;
-extern bool afs_dir_check_page(struct inode *, struct page *);
extern void afs_d_release(struct dentry *);
/*
diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 8bffb17f9728ddd798ed6567f69df092b37d73a7..6f5a000f44a796aa60335f4deda786f683d3bad4 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -910,10 +910,11 @@ static int afs_proc_stats_show(struct seq_file *m, void *v)
seq_puts(m, "kAFS statistics\n");
- seq_printf(m, "dir-mgmt: look=%u reval=%u inval=%u\n",
+ seq_printf(m, "dir-mgmt: look=%u reval=%u inval=%u relpg=%u\n",
atomic_read(&net->n_lookup),
atomic_read(&net->n_reval),
- atomic_read(&net->n_inval));
+ atomic_read(&net->n_inval),
+ atomic_read(&net->n_relpg));
seq_printf(m, "dir-data: rdpg=%u\n",
atomic_read(&net->n_read_dir));
diff --git a/fs/afs/write.c b/fs/afs/write.c
index 9370e2feb999303098d36aab4234d9f2fef7f24a..70a563c14e6f3393d7b963aff6d6b779a225739a 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -42,10 +42,11 @@ static int afs_fill_page(struct afs_vnode *vnode, struct key *key,
if (!req)
return -ENOMEM;
- atomic_set(&req->usage, 1);
+ refcount_set(&req->usage, 1);
req->pos = pos;
req->len = len;
req->nr_pages = 1;
+ req->pages = req->array;
req->pages[0] = page;
get_page(page);