summaryrefslogtreecommitdiffstats
path: root/fs/nfs
diff options
context:
space:
mode:
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/Kconfig3
-rw-r--r--fs/nfs/dir.c2
-rw-r--r--fs/nfs/direct.c3
-rw-r--r--fs/nfs/fscache.c9
-rw-r--r--fs/nfs/inode.c95
-rw-r--r--fs/nfs/internal.h2
-rw-r--r--fs/nfs/iostat.h4
-rw-r--r--fs/nfs/mount_clnt.c2
-rw-r--r--fs/nfs/nfs2xdr.c2
-rw-r--r--fs/nfs/nfs4proc.c8
-rw-r--r--fs/nfs/nfs4xdr.c6
-rw-r--r--fs/nfs/symlink.c2
-rw-r--r--fs/nfs/write.c250
13 files changed, 115 insertions, 273 deletions
diff --git a/fs/nfs/Kconfig b/fs/nfs/Kconfig
index 59e5673..a43d07e 100644
--- a/fs/nfs/Kconfig
+++ b/fs/nfs/Kconfig
@@ -95,8 +95,7 @@ config ROOT_NFS
Most people say N here.
config NFS_FSCACHE
- bool "Provide NFS client caching support (EXPERIMENTAL)"
- depends on EXPERIMENTAL
+ bool "Provide NFS client caching support"
depends on NFS_FS=m && FSCACHE || NFS_FS=y && FSCACHE=y
help
Say Y here if you want NFS data to be cached locally on disc through
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 3c7f03b..a1f6b44 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -560,7 +560,7 @@ static int nfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
desc->entry = &my_entry;
nfs_block_sillyrename(dentry);
- res = nfs_revalidate_mapping_nolock(inode, filp->f_mapping);
+ res = nfs_revalidate_mapping(inode, filp->f_mapping);
if (res < 0)
goto out;
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index e1d415e..0d28982 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -342,6 +342,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
data->res.fattr = &data->fattr;
data->res.eof = 0;
data->res.count = bytes;
+ nfs_fattr_init(&data->fattr);
msg.rpc_argp = &data->args;
msg.rpc_resp = &data->res;
@@ -575,6 +576,7 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
data->res.count = 0;
data->res.fattr = &data->fattr;
data->res.verf = &data->verf;
+ nfs_fattr_init(&data->fattr);
NFS_PROTO(data->inode)->commit_setup(data, &msg);
@@ -766,6 +768,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
data->res.fattr = &data->fattr;
data->res.count = bytes;
data->res.verf = &data->verf;
+ nfs_fattr_init(&data->fattr);
task_setup_data.task = &data->task;
task_setup_data.callback_data = data;
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index fa58800..237874f 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -354,12 +354,11 @@ void nfs_fscache_reset_inode_cookie(struct inode *inode)
*/
int nfs_fscache_release_page(struct page *page, gfp_t gfp)
{
- struct nfs_inode *nfsi = NFS_I(page->mapping->host);
- struct fscache_cookie *cookie = nfsi->fscache;
-
- BUG_ON(!cookie);
-
if (PageFsCache(page)) {
+ struct nfs_inode *nfsi = NFS_I(page->mapping->host);
+ struct fscache_cookie *cookie = nfsi->fscache;
+
+ BUG_ON(!cookie);
dfprintk(FSCACHE, "NFS: fscache releasepage (0x%p/0x%p/0x%p)\n",
cookie, page, nfsi);
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index 87cca56..657201a 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -97,22 +97,6 @@ u64 nfs_compat_user_ino64(u64 fileid)
return ino;
}
-int nfs_write_inode(struct inode *inode, int sync)
-{
- int ret;
-
- if (sync) {
- ret = filemap_fdatawait(inode->i_mapping);
- if (ret == 0)
- ret = nfs_commit_inode(inode, FLUSH_SYNC);
- } else
- ret = nfs_commit_inode(inode, 0);
- if (ret >= 0)
- return 0;
- __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
- return ret;
-}
-
void nfs_clear_inode(struct inode *inode)
{
/*
@@ -130,16 +114,12 @@ void nfs_clear_inode(struct inode *inode)
*/
int nfs_sync_mapping(struct address_space *mapping)
{
- int ret;
+ int ret = 0;
- if (mapping->nrpages == 0)
- return 0;
- unmap_mapping_range(mapping, 0, 0, 0);
- ret = filemap_write_and_wait(mapping);
- if (ret != 0)
- goto out;
- ret = nfs_wb_all(mapping->host);
-out:
+ if (mapping->nrpages != 0) {
+ unmap_mapping_range(mapping, 0, 0, 0);
+ ret = nfs_wb_all(mapping->host);
+ }
return ret;
}
@@ -511,17 +491,11 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
int need_atime = NFS_I(inode)->cache_validity & NFS_INO_INVALID_ATIME;
int err;
- /*
- * Flush out writes to the server in order to update c/mtime.
- *
- * Hold the i_mutex to suspend application writes temporarily;
- * this prevents long-running writing applications from blocking
- * nfs_wb_nocommit.
- */
+ /* Flush out writes to the server in order to update c/mtime. */
if (S_ISREG(inode->i_mode)) {
- mutex_lock(&inode->i_mutex);
- nfs_wb_nocommit(inode);
- mutex_unlock(&inode->i_mutex);
+ err = filemap_write_and_wait(inode->i_mapping);
+ if (err)
+ goto out;
}
/*
@@ -545,6 +519,7 @@ int nfs_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
generic_fillattr(inode, stat);
stat->ino = nfs_compat_user_ino64(NFS_FILEID(inode));
}
+out:
return err;
}
@@ -574,14 +549,14 @@ void nfs_close_context(struct nfs_open_context *ctx, int is_sync)
nfs_revalidate_inode(server, inode);
}
-static struct nfs_open_context *alloc_nfs_open_context(struct vfsmount *mnt, struct dentry *dentry, struct rpc_cred *cred)
+static struct nfs_open_context *alloc_nfs_open_context(struct path *path, struct rpc_cred *cred)
{
struct nfs_open_context *ctx;
ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
if (ctx != NULL) {
- ctx->path.dentry = dget(dentry);
- ctx->path.mnt = mntget(mnt);
+ ctx->path = *path;
+ path_get(&ctx->path);
ctx->cred = get_rpccred(cred);
ctx->state = NULL;
ctx->lockowner = current->files;
@@ -681,7 +656,7 @@ int nfs_open(struct inode *inode, struct file *filp)
cred = rpc_lookup_cred();
if (IS_ERR(cred))
return PTR_ERR(cred);
- ctx = alloc_nfs_open_context(filp->f_path.mnt, filp->f_path.dentry, cred);
+ ctx = alloc_nfs_open_context(&filp->f_path, cred);
put_rpccred(cred);
if (ctx == NULL)
return -ENOMEM;
@@ -774,7 +749,7 @@ int nfs_revalidate_inode(struct nfs_server *server, struct inode *inode)
return __nfs_revalidate_inode(server, inode);
}
-static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
+static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
{
struct nfs_inode *nfsi = NFS_I(inode);
@@ -795,49 +770,10 @@ static int nfs_invalidate_mapping_nolock(struct inode *inode, struct address_spa
return 0;
}
-static int nfs_invalidate_mapping(struct inode *inode, struct address_space *mapping)
-{
- int ret = 0;
-
- mutex_lock(&inode->i_mutex);
- if (NFS_I(inode)->cache_validity & NFS_INO_INVALID_DATA) {
- ret = nfs_sync_mapping(mapping);
- if (ret == 0)
- ret = nfs_invalidate_mapping_nolock(inode, mapping);
- }
- mutex_unlock(&inode->i_mutex);
- return ret;
-}
-
-/**
- * nfs_revalidate_mapping_nolock - Revalidate the pagecache
- * @inode - pointer to host inode
- * @mapping - pointer to mapping
- */
-int nfs_revalidate_mapping_nolock(struct inode *inode, struct address_space *mapping)
-{
- struct nfs_inode *nfsi = NFS_I(inode);
- int ret = 0;
-
- if ((nfsi->cache_validity & NFS_INO_REVAL_PAGECACHE)
- || nfs_attribute_timeout(inode) || NFS_STALE(inode)) {
- ret = __nfs_revalidate_inode(NFS_SERVER(inode), inode);
- if (ret < 0)
- goto out;
- }
- if (nfsi->cache_validity & NFS_INO_INVALID_DATA)
- ret = nfs_invalidate_mapping_nolock(inode, mapping);
-out:
- return ret;
-}
-
/**
* nfs_revalidate_mapping - Revalidate the pagecache
* @inode - pointer to host inode
* @mapping - pointer to mapping
- *
- * This version of the function will take the inode->i_mutex and attempt to
- * flush out all dirty data if it needs to invalidate the page cache.
*/
int nfs_revalidate_mapping(struct inode *inode, struct address_space *mapping)
{
@@ -1415,6 +1351,7 @@ static void init_once(void *foo)
INIT_LIST_HEAD(&nfsi->access_cache_inode_lru);
INIT_RADIX_TREE(&nfsi->nfs_page_tree, GFP_ATOMIC);
nfsi->npages = 0;
+ nfsi->ncommit = 0;
atomic_set(&nfsi->silly_count, 1);
INIT_HLIST_HEAD(&nfsi->silly_list);
init_waitqueue_head(&nfsi->waitqueue);
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h
index 29e464d..11f82f0 100644
--- a/fs/nfs/internal.h
+++ b/fs/nfs/internal.h
@@ -211,7 +211,7 @@ extern int nfs_access_cache_shrinker(int nr_to_scan, gfp_t gfp_mask);
extern struct workqueue_struct *nfsiod_workqueue;
extern struct inode *nfs_alloc_inode(struct super_block *sb);
extern void nfs_destroy_inode(struct inode *);
-extern int nfs_write_inode(struct inode *,int);
+extern int nfs_write_inode(struct inode *, struct writeback_control *);
extern void nfs_clear_inode(struct inode *);
#ifdef CONFIG_NFS_V4
extern void nfs4_clear_inode(struct inode *);
diff --git a/fs/nfs/iostat.h b/fs/nfs/iostat.h
index 46d779a..1d8d5c8 100644
--- a/fs/nfs/iostat.h
+++ b/fs/nfs/iostat.h
@@ -57,12 +57,12 @@ static inline void nfs_add_fscache_stats(struct inode *inode,
}
#endif
-static inline struct nfs_iostats *nfs_alloc_iostats(void)
+static inline struct nfs_iostats __percpu *nfs_alloc_iostats(void)
{
return alloc_percpu(struct nfs_iostats);
}
-static inline void nfs_free_iostats(struct nfs_iostats *stats)
+static inline void nfs_free_iostats(struct nfs_iostats __percpu *stats)
{
if (stats != NULL)
free_percpu(stats);
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 0adefc4..59047f8 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -120,7 +120,7 @@ static struct {
{ .status = MNT3ERR_INVAL, .errno = -EINVAL, },
{ .status = MNT3ERR_NAMETOOLONG, .errno = -ENAMETOOLONG, },
{ .status = MNT3ERR_NOTSUPP, .errno = -ENOTSUPP, },
- { .status = MNT3ERR_SERVERFAULT, .errno = -ESERVERFAULT, },
+ { .status = MNT3ERR_SERVERFAULT, .errno = -EREMOTEIO, },
};
struct mountres {
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 5e078b2..7bc2da8 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -699,7 +699,7 @@ static struct {
{ NFSERR_BAD_COOKIE, -EBADCOOKIE },
{ NFSERR_NOTSUPP, -ENOTSUPP },
{ NFSERR_TOOSMALL, -ETOOSMALL },
- { NFSERR_SERVERFAULT, -ESERVERFAULT },
+ { NFSERR_SERVERFAULT, -EREMOTEIO },
{ NFSERR_BADTYPE, -EBADTYPE },
{ NFSERR_JUKEBOX, -EJUKEBOX },
{ -1, -EIO }
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index adc116c..eda74c4 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -726,8 +726,8 @@ static struct nfs4_opendata *nfs4_opendata_alloc(struct path *path,
p->o_arg.seqid = nfs_alloc_seqid(&sp->so_seqid);
if (p->o_arg.seqid == NULL)
goto err_free;
- p->path.mnt = mntget(path->mnt);
- p->path.dentry = dget(path->dentry);
+ path_get(path);
+ p->path = *path;
p->dir = parent;
p->owner = sp;
atomic_inc(&sp->so_count);
@@ -1947,8 +1947,8 @@ int nfs4_do_close(struct path *path, struct nfs4_state *state, int wait)
calldata->res.seqid = calldata->arg.seqid;
calldata->res.server = server;
calldata->res.seq_res.sr_slotid = NFS4_MAX_SLOT_TABLE;
- calldata->path.mnt = mntget(path->mnt);
- calldata->path.dentry = dget(path->dentry);
+ path_get(path);
+ calldata->path = *path;
msg.rpc_argp = &calldata->arg,
msg.rpc_resp = &calldata->res,
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index 020ebf1..4d338be 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4639,7 +4639,7 @@ static int decode_sequence(struct xdr_stream *xdr,
* If the server returns different values for sessionID, slotID or
* sequence number, the server is looney tunes.
*/
- status = -ESERVERFAULT;
+ status = -EREMOTEIO;
if (memcmp(id.data, res->sr_session->sess_id.data,
NFS4_MAX_SESSIONID_LEN)) {
@@ -5782,7 +5782,7 @@ static struct {
{ NFS4ERR_BAD_COOKIE, -EBADCOOKIE },
{ NFS4ERR_NOTSUPP, -ENOTSUPP },
{ NFS4ERR_TOOSMALL, -ETOOSMALL },
- { NFS4ERR_SERVERFAULT, -ESERVERFAULT },
+ { NFS4ERR_SERVERFAULT, -EREMOTEIO },
{ NFS4ERR_BADTYPE, -EBADTYPE },
{ NFS4ERR_LOCKED, -EAGAIN },
{ NFS4ERR_SYMLINK, -ELOOP },
@@ -5809,7 +5809,7 @@ nfs4_stat_to_errno(int stat)
}
if (stat <= 10000 || stat > 10100) {
/* The server is looney tunes. */
- return -ESERVERFAULT;
+ return -EREMOTEIO;
}
/* If we cannot translate the error, the recovery routines should
* handle it.
diff --git a/fs/nfs/symlink.c b/fs/nfs/symlink.c
index 412738d..2ea9e5c 100644
--- a/fs/nfs/symlink.c
+++ b/fs/nfs/symlink.c
@@ -50,7 +50,7 @@ static void *nfs_follow_link(struct dentry *dentry, struct nameidata *nd)
struct page *page;
void *err;
- err = ERR_PTR(nfs_revalidate_mapping_nolock(inode, inode->i_mapping));
+ err = ERR_PTR(nfs_revalidate_mapping(inode, inode->i_mapping));
if (err)
goto read_failed;
page = read_cache_page(&inode->i_data, 0,
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 7b54b8b..53ff70e 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -438,6 +438,7 @@ nfs_mark_request_commit(struct nfs_page *req)
radix_tree_tag_set(&nfsi->nfs_page_tree,
req->wb_index,
NFS_PAGE_TAG_COMMIT);
+ nfsi->ncommit++;
spin_unlock(&inode->i_lock);
inc_zone_page_state(req->wb_page, NR_UNSTABLE_NFS);
inc_bdi_stat(req->wb_page->mapping->backing_dev_info, BDI_RECLAIMABLE);
@@ -501,57 +502,6 @@ int nfs_reschedule_unstable_write(struct nfs_page *req)
}
#endif
-/*
- * Wait for a request to complete.
- *
- * Interruptible by fatal signals only.
- */
-static int nfs_wait_on_requests_locked(struct inode *inode, pgoff_t idx_start, unsigned int npages)
-{
- struct nfs_inode *nfsi = NFS_I(inode);
- struct nfs_page *req;
- pgoff_t idx_end, next;
- unsigned int res = 0;
- int error;
-
- if (npages == 0)
- idx_end = ~0;
- else
- idx_end = idx_start + npages - 1;
-
- next = idx_start;
- while (radix_tree_gang_lookup_tag(&nfsi->nfs_page_tree, (void **)&req, next, 1, NFS_PAGE_TAG_LOCKED)) {
- if (req->wb_index > idx_end)
- break;
-
- next = req->wb_index + 1;
- BUG_ON(!NFS_WBACK_BUSY(req));
-
- kref_get(&req->wb_kref);
- spin_unlock(&inode->i_lock);
- error = nfs_wait_on_request(req);
- nfs_release_request(req);
- spin_lock(&inode->i_lock);
- if (error < 0)
- return error;
- res++;
- }
- return res;
-}
-
-static void nfs_cancel_commit_list(struct list_head *head)
-{
- struct nfs_page *req;
-
- while(!list_empty(head)) {
- req = nfs_list_entry(head->next);
- nfs_list_remove_request(req);
- nfs_clear_request_commit(req);
- nfs_inode_remove_request(req);
- nfs_unlock_request(req);
- }
-}
-
#if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
static int
nfs_need_commit(struct nfs_inode *nfsi)
@@ -573,11 +523,17 @@ static int
nfs_scan_commit(struct inode *inode, struct list_head *dst, pgoff_t idx_start, unsigned int npages)
{
struct nfs_inode *nfsi = NFS_I(inode);
+ int ret;
if (!nfs_need_commit(nfsi))
return 0;
- return nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
+ ret = nfs_scan_list(nfsi, dst, idx_start, npages, NFS_PAGE_TAG_COMMIT);
+ if (ret > 0)
+ nfsi->ncommit -= ret;
+ if (nfs_need_commit(NFS_I(inode)))
+ __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
+ return ret;
}
#else
static inline int nfs_need_commit(struct nfs_inode *nfsi)
@@ -642,9 +598,10 @@ static struct nfs_page *nfs_try_to_update_request(struct inode *inode,
spin_lock(&inode->i_lock);
}
- if (nfs_clear_request_commit(req))
- radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree,
- req->wb_index, NFS_PAGE_TAG_COMMIT);
+ if (nfs_clear_request_commit(req) &&
+ radix_tree_tag_clear(&NFS_I(inode)->nfs_page_tree,
+ req->wb_index, NFS_PAGE_TAG_COMMIT) != NULL)
+ NFS_I(inode)->ncommit--;
/* Okay, the request matches. Update the region */
if (offset < req->wb_offset) {
@@ -1391,7 +1348,7 @@ static const struct rpc_call_ops nfs_commit_ops = {
.rpc_release = nfs_commit_release,
};
-int nfs_commit_inode(struct inode *inode, int how)
+static int nfs_commit_inode(struct inode *inode, int how)
{
LIST_HEAD(head);
int res;
@@ -1406,92 +1363,51 @@ int nfs_commit_inode(struct inode *inode, int how)
}
return res;
}
-#else
-static inline int nfs_commit_list(struct inode *inode, struct list_head *head, int how)
-{
- return 0;
-}
-#endif
-long nfs_sync_mapping_wait(struct address_space *mapping, struct writeback_control *wbc, int how)
+static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_control *wbc)
{
- struct inode *inode = mapping->host;
- pgoff_t idx_start, idx_end;
- unsigned int npages = 0;
- LIST_HEAD(head);
- int nocommit = how & FLUSH_NOCOMMIT;
- long pages, ret;
-
- /* FIXME */
- if (wbc->range_cyclic)
- idx_start = 0;
- else {
- idx_start = wbc->range_start >> PAGE_CACHE_SHIFT;
- idx_end = wbc->range_end >> PAGE_CACHE_SHIFT;
- if (idx_end > idx_start) {
- pgoff_t l_npages = 1 + idx_end - idx_start;
- npages = l_npages;
- if (sizeof(npages) != sizeof(l_npages) &&
- (pgoff_t)npages != l_npages)
- npages = 0;
+ struct nfs_inode *nfsi = NFS_I(inode);
+ int flags = FLUSH_SYNC;
+ int ret = 0;
+
+ /* Don't commit yet if this is a non-blocking flush and there are
+ * lots of outstanding writes for this mapping.
+ */
+ if (wbc->sync_mode == WB_SYNC_NONE &&
+ nfsi->ncommit <= (nfsi->npages >> 1))
+ goto out_mark_dirty;
+
+ if (wbc->nonblocking || wbc->for_background)
+ flags = 0;
+ ret = nfs_commit_inode(inode, flags);
+ if (ret >= 0) {
+ if (wbc->sync_mode == WB_SYNC_NONE) {
+ if (ret < wbc->nr_to_write)
+ wbc->nr_to_write -= ret;
+ else
+ wbc->nr_to_write = 0;
}
+ return 0;
}
- how &= ~FLUSH_NOCOMMIT;
- spin_lock(&inode->i_lock);
- do {
- ret = nfs_wait_on_requests_locked(inode, idx_start, npages);
- if (ret != 0)
- continue;
- if (nocommit)
- break;
- pages = nfs_scan_commit(inode, &head, idx_start, npages);
- if (pages == 0)
- break;
- if (how & FLUSH_INVALIDATE) {
- spin_unlock(&inode->i_lock);
- nfs_cancel_commit_list(&head);
- ret = pages;
- spin_lock(&inode->i_lock);
- continue;
- }
- pages += nfs_scan_commit(inode, &head, 0, 0);
- spin_unlock(&inode->i_lock);
- ret = nfs_commit_list(inode, &head, how);
- spin_lock(&inode->i_lock);
-
- } while (ret >= 0);
- spin_unlock(&inode->i_lock);
+out_mark_dirty:
+ __mark_inode_dirty(inode, I_DIRTY_DATASYNC);
return ret;
}
-
-static int __nfs_write_mapping(struct address_space *mapping, struct writeback_control *wbc, int how)
+#else
+static int nfs_commit_inode(struct inode *inode, int how)
{
- int ret;
-
- ret = nfs_writepages(mapping, wbc);
- if (ret < 0)
- goto out;
- ret = nfs_sync_mapping_wait(mapping, wbc, how);
- if (ret < 0)
- goto out;
return 0;
-out:
- __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
- return ret;
}
-/* Two pass sync: first using WB_SYNC_NONE, then WB_SYNC_ALL */
-static int nfs_write_mapping(struct address_space *mapping, int how)
+static int nfs_commit_unstable_pages(struct inode *inode, struct writeback_control *wbc)
{
- struct writeback_control wbc = {
- .bdi = mapping->backing_dev_info,
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
- .range_start = 0,
- .range_end = LLONG_MAX,
- };
+ return 0;
+}
+#endif
- return __nfs_write_mapping(mapping, &wbc, how);
+int nfs_write_inode(struct inode *inode, struct writeback_control *wbc)
+{
+ return nfs_commit_unstable_pages(inode, wbc);
}
/*
@@ -1499,37 +1415,26 @@ static int nfs_write_mapping(struct address_space *mapping, int how)
*/
int nfs_wb_all(struct inode *inode)
{
- return nfs_write_mapping(inode->i_mapping, 0);
-}
+ struct writeback_control wbc = {
+ .sync_mode = WB_SYNC_ALL,
+ .nr_to_write = LONG_MAX,
+ .range_start = 0,
+ .range_end = LLONG_MAX,
+ };
-int nfs_wb_nocommit(struct inode *inode)
-{
- return nfs_write_mapping(inode->i_mapping, FLUSH_NOCOMMIT);
+ return sync_inode(inode, &wbc);
}
int nfs_wb_page_cancel(struct inode *inode, struct page *page)
{
struct nfs_page *req;
- loff_t range_start = page_offset(page);
- loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1);
- struct writeback_control wbc = {
- .bdi = page->mapping->backing_dev_info,
- .sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
- .range_start = range_start,
- .range_end = range_end,
- };
int ret = 0;
BUG_ON(!PageLocked(page));
for (;;) {
req = nfs_page_find_request(page);
if (req == NULL)
- goto out;
- if (test_bit(PG_CLEAN, &req->wb_flags)) {
- nfs_release_request(req);
break;
- }
if (nfs_lock_request_dontget(req)) {
nfs_inode_remove_request(req);
/*
@@ -1543,54 +1448,54 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
ret = nfs_wait_on_request(req);
nfs_release_request(req);
if (ret < 0)
- goto out;
+ break;
}
- if (!PagePrivate(page))
- return 0;
- ret = nfs_sync_mapping_wait(page->mapping, &wbc, FLUSH_INVALIDATE);
-out:
return ret;
}
-static int nfs_wb_page_priority(struct inode *inode, struct page *page,
- int how)
+/*
+ * Write back all requests on one page - we do this before reading it.
+ */
+int nfs_wb_page(struct inode *inode, struct page *page)
{
loff_t range_start = page_offset(page);
loff_t range_end = range_start + (loff_t)(PAGE_CACHE_SIZE - 1);
struct writeback_control wbc = {
- .bdi = page->mapping->backing_dev_info,
.sync_mode = WB_SYNC_ALL,
- .nr_to_write = LONG_MAX,
+ .nr_to_write = 0,
.range_start = range_start,
.range_end = range_end,
};
+ struct nfs_page *req;
+ int need_commit;
int ret;
- do {
+ while(PagePrivate(page)) {
if (clear_page_dirty_for_io(page)) {
ret = nfs_writepage_locked(page, &wbc);
if (ret < 0)
goto out_error;
- } else if (!PagePrivate(page))
+ }
+ req = nfs_find_and_lock_request(page);
+ if (!req)
break;
- ret = nfs_sync_mapping_wait(page->mapping, &wbc, how);
- if (ret < 0)
+ if (IS_ERR(req)) {
+ ret = PTR_ERR(req);
goto out_error;
- } while (PagePrivate(page));
+ }
+ need_commit = test_bit(PG_CLEAN, &req->wb_flags);
+ nfs_clear_page_tag_locked(req);
+ if (need_commit) {
+ ret = nfs_commit_inode(inode, FLUSH_SYNC);
+ if (ret < 0)
+ goto out_error;
+ }
+ }
return 0;
out_error:
- __mark_inode_dirty(inode, I_DIRTY_PAGES);
return ret;
}
-/*
- * Write back all requests on one page - we do this before reading it.
- */
-int nfs_wb_page(struct inode *inode, struct page* page)
-{
- return nfs_wb_page_priority(inode, page, FLUSH_STABLE);
-}
-
#ifdef CONFIG_MIGRATION
int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
struct page *page)
@@ -1598,8 +1503,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
struct nfs_page *req;
int ret;
- if (PageFsCache(page))
- nfs_fscache_release_page(page, GFP_KERNEL);
+ nfs_fscache_release_page(page, GFP_KERNEL);
req = nfs_find_and_lock_request(page);
ret = PTR_ERR(req);
OpenPOWER on IntegriCloud