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authorTrond Myklebust <trond.myklebust@primarydata.com>2017-04-26 12:26:22 -0400
committerTrond Myklebust <trond.myklebust@primarydata.com>2017-04-26 13:03:04 -0400
commitc373fff7bd252ec36e8a895c58a584088f1d38bc (patch)
tree005607bf423bbe80c003c33f71c84a7e2229d992 /fs/nfs
parent54551d85ad48b5b5f5735b9b76c147096828b626 (diff)
downloadlinux-c373fff7bd252ec36e8a895c58a584088f1d38bc.tar.bz2
NFSv4: Don't special case "launder"
If the client receives a fatal server error from nfs_pageio_add_request(), then we should always truncate the page on which the error occurred. Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Diffstat (limited to 'fs/nfs')
-rw-r--r--fs/nfs/file.c2
-rw-r--r--fs/nfs/write.c27
2 files changed, 12 insertions, 17 deletions
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index bebed885b6e4..5713eb32a45e 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -482,7 +482,7 @@ static int nfs_launder_page(struct page *page)
inode->i_ino, (long long)page_offset(page));
nfs_fscache_wait_on_page_write(nfsi, page);
- return nfs_wb_launder_page(inode, page);
+ return nfs_wb_page(inode, page);
}
static int nfs_swap_activate(struct swap_info_struct *sis, struct file *file,
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index 2e654940478f..59e21cc0a266 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -586,8 +586,7 @@ nfs_error_is_fatal_on_server(int err)
* May return an error if the user signalled nfs_wait_on_request().
*/
static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
- struct page *page, bool nonblock,
- bool launder)
+ struct page *page, bool nonblock)
{
struct nfs_page *req;
int ret = 0;
@@ -610,13 +609,11 @@ static int nfs_page_async_flush(struct nfs_pageio_descriptor *pgio,
if (!nfs_pageio_add_request(pgio, req)) {
ret = pgio->pg_error;
/*
- * Remove the problematic req upon fatal errors
- * in launder case, while other dirty pages can
- * still be around until they get flushed.
+ * Remove the problematic req upon fatal errors on the server
*/
if (nfs_error_is_fatal(ret)) {
nfs_context_set_write_error(req->wb_context, ret);
- if (launder)
+ if (nfs_error_is_fatal_on_server(ret))
goto out_launder;
}
nfs_redirty_request(req);
@@ -632,13 +629,12 @@ out_launder:
}
static int nfs_do_writepage(struct page *page, struct writeback_control *wbc,
- struct nfs_pageio_descriptor *pgio, bool launder)
+ struct nfs_pageio_descriptor *pgio)
{
int ret;
nfs_pageio_cond_complete(pgio, page_index(page));
- ret = nfs_page_async_flush(pgio, page, wbc->sync_mode == WB_SYNC_NONE,
- launder);
+ ret = nfs_page_async_flush(pgio, page, wbc->sync_mode == WB_SYNC_NONE);
if (ret == -EAGAIN) {
redirty_page_for_writepage(wbc, page);
ret = 0;
@@ -650,8 +646,7 @@ static int nfs_do_writepage(struct page *page, struct writeback_control *wbc,
* Write an mmapped page to the server.
*/
static int nfs_writepage_locked(struct page *page,
- struct writeback_control *wbc,
- bool launder)
+ struct writeback_control *wbc)
{
struct nfs_pageio_descriptor pgio;
struct inode *inode = page_file_mapping(page)->host;
@@ -660,7 +655,7 @@ static int nfs_writepage_locked(struct page *page,
nfs_inc_stats(inode, NFSIOS_VFSWRITEPAGE);
nfs_pageio_init_write(&pgio, inode, 0,
false, &nfs_async_write_completion_ops);
- err = nfs_do_writepage(page, wbc, &pgio, launder);
+ err = nfs_do_writepage(page, wbc, &pgio);
nfs_pageio_complete(&pgio);
if (err < 0)
return err;
@@ -673,7 +668,7 @@ int nfs_writepage(struct page *page, struct writeback_control *wbc)
{
int ret;
- ret = nfs_writepage_locked(page, wbc, false);
+ ret = nfs_writepage_locked(page, wbc);
unlock_page(page);
return ret;
}
@@ -682,7 +677,7 @@ static int nfs_writepages_callback(struct page *page, struct writeback_control *
{
int ret;
- ret = nfs_do_writepage(page, wbc, data, false);
+ ret = nfs_do_writepage(page, wbc, data);
unlock_page(page);
return ret;
}
@@ -2013,7 +2008,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
/*
* Write back all requests on one page - we do this before reading it.
*/
-int nfs_wb_single_page(struct inode *inode, struct page *page, bool launder)
+int nfs_wb_page(struct inode *inode, struct page *page)
{
loff_t range_start = page_file_offset(page);
loff_t range_end = range_start + (loff_t)(PAGE_SIZE - 1);
@@ -2030,7 +2025,7 @@ int nfs_wb_single_page(struct inode *inode, struct page *page, bool launder)
for (;;) {
wait_on_page_writeback(page);
if (clear_page_dirty_for_io(page)) {
- ret = nfs_writepage_locked(page, &wbc, launder);
+ ret = nfs_writepage_locked(page, &wbc);
if (ret < 0)
goto out_error;
continue;