diff options
| -rw-r--r-- | fs/nfs/internal.h | 10 | ||||
| -rw-r--r-- | fs/nfs/read.c | 35 | ||||
| -rw-r--r-- | fs/nfs/write.c | 12 |
3 files changed, 36 insertions, 21 deletions
diff --git a/fs/nfs/internal.h b/fs/nfs/internal.h index a2346a2f8361..e64f810223be 100644 --- a/fs/nfs/internal.h +++ b/fs/nfs/internal.h @@ -775,3 +775,13 @@ static inline bool nfs_error_is_fatal(int err) } } +static inline bool nfs_error_is_fatal_on_server(int err) +{ + switch (err) { + case 0: + case -ERESTARTSYS: + case -EINTR: + return false; + } + return nfs_error_is_fatal(err); +} diff --git a/fs/nfs/read.c b/fs/nfs/read.c index c19841c82b6a..cfe0b586eadd 100644 --- a/fs/nfs/read.c +++ b/fs/nfs/read.c @@ -91,19 +91,25 @@ void nfs_pageio_reset_read_mds(struct nfs_pageio_descriptor *pgio) } EXPORT_SYMBOL_GPL(nfs_pageio_reset_read_mds); -static void nfs_readpage_release(struct nfs_page *req) +static void nfs_readpage_release(struct nfs_page *req, int error) { struct inode *inode = d_inode(nfs_req_openctx(req)->dentry); + struct page *page = req->wb_page; dprintk("NFS: read done (%s/%llu %d@%lld)\n", inode->i_sb->s_id, (unsigned long long)NFS_FILEID(inode), req->wb_bytes, (long long)req_offset(req)); + if (nfs_error_is_fatal_on_server(error) && error != -ETIMEDOUT) + SetPageError(page); if (nfs_page_group_sync_on_bit(req, PG_UNLOCKPAGE)) { - if (PageUptodate(req->wb_page)) - nfs_readpage_to_fscache(inode, req->wb_page, 0); + struct address_space *mapping = page_file_mapping(page); - unlock_page(req->wb_page); + if (PageUptodate(page)) + nfs_readpage_to_fscache(inode, page, 0); + else if (!PageError(page) && !PagePrivate(page)) + generic_error_remove_page(mapping, page); + unlock_page(page); } nfs_release_request(req); } @@ -131,7 +137,7 @@ int nfs_readpage_async(struct nfs_open_context *ctx, struct inode *inode, &nfs_async_read_completion_ops); if (!nfs_pageio_add_request(&pgio, new)) { nfs_list_remove_request(new); - nfs_readpage_release(new); + nfs_readpage_release(new, pgio.pg_error); } nfs_pageio_complete(&pgio); @@ -153,6 +159,7 @@ static void nfs_page_group_set_uptodate(struct nfs_page *req) static void nfs_read_completion(struct nfs_pgio_header *hdr) { unsigned long bytes = 0; + int error; if (test_bit(NFS_IOHDR_REDO, &hdr->flags)) goto out; @@ -179,14 +186,19 @@ static void nfs_read_completion(struct nfs_pgio_header *hdr) zero_user_segment(page, start, end); } } + error = 0; bytes += req->wb_bytes; if (test_bit(NFS_IOHDR_ERROR, &hdr->flags)) { if (bytes <= hdr->good_bytes) nfs_page_group_set_uptodate(req); + else { + error = hdr->error; + xchg(&nfs_req_openctx(req)->error, error); + } } else nfs_page_group_set_uptodate(req); nfs_list_remove_request(req); - nfs_readpage_release(req); + nfs_readpage_release(req, error); } out: hdr->release(hdr); @@ -213,7 +225,7 @@ nfs_async_read_error(struct list_head *head, int error) while (!list_empty(head)) { req = nfs_list_entry(head->next); nfs_list_remove_request(req); - nfs_readpage_release(req); + nfs_readpage_release(req, error); } } @@ -337,8 +349,13 @@ int nfs_readpage(struct file *file, struct page *page) goto out; } + xchg(&ctx->error, 0); error = nfs_readpage_async(ctx, inode, page); - + if (!error) { + error = wait_on_page_locked_killable(page); + if (!PageUptodate(page) && !error) + error = xchg(&ctx->error, 0); + } out: put_nfs_open_context(ctx); return error; @@ -372,8 +389,8 @@ readpage_async_filler(void *data, struct page *page) zero_user_segment(page, len, PAGE_SIZE); if (!nfs_pageio_add_request(desc->pgio, new)) { nfs_list_remove_request(new); - nfs_readpage_release(new); error = desc->pgio->pg_error; + nfs_readpage_release(new, error); goto out; } return 0; diff --git a/fs/nfs/write.c b/fs/nfs/write.c index 3399149435ce..cee9905e419c 100644 --- a/fs/nfs/write.c +++ b/fs/nfs/write.c @@ -599,18 +599,6 @@ static void nfs_write_error(struct nfs_page *req, int error) nfs_release_request(req); } -static bool -nfs_error_is_fatal_on_server(int err) -{ - switch (err) { - case 0: - case -ERESTARTSYS: - case -EINTR: - return false; - } - return nfs_error_is_fatal(err); -} - /* * Find an associated nfs write request, and prepare to flush it out * May return an error if the user signalled nfs_wait_on_request(). |