linux-kernel - [PATCH 08/22] staging: erofs: kill CONFIG_EROFS_FS_IO_MAX

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Date:   Mon, 29 Jul 2019 14:51:45 +0800
From:   Gao Xiang <gaoxiang25@...wei.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        <devel@...verdev.osuosl.org>
CC:     LKML <linux-kernel@...r.kernel.org>,
        <linux-erofs@...ts.ozlabs.org>, "Chao Yu" <chao@...nel.org>,
        Miao Xie <miaoxie@...wei.com>, <weidu.du@...wei.com>,
        Fang Wei <fangwei1@...wei.com>,
        Gao Xiang <gaoxiang25@...wei.com>
Subject: [PATCH 08/22] staging: erofs: kill CONFIG_EROFS_FS_IO_MAX_RETRIES

CONFIG_EROFS_FS_IO_MAX_RETRIES seems a runtime setting
and users have no idea about the change in behaviour.

Let's remove the setting currently and fold it into code,
turn it into a module parameter if it's really needed.

Suggested-by: David Sterba <dsterba@...e.cz>
Signed-off-by: Gao Xiang <gaoxiang25@...wei.com>
---
 drivers/staging/erofs/Kconfig    | 9 ---------
 drivers/staging/erofs/data.c     | 2 +-
 drivers/staging/erofs/internal.h | 6 ------
 3 files changed, 1 insertion(+), 16 deletions(-)

diff --git a/drivers/staging/erofs/Kconfig b/drivers/staging/erofs/Kconfig
index 2577cbb46a5b..747e9eebfaa5 100644
--- a/drivers/staging/erofs/Kconfig
+++ b/drivers/staging/erofs/Kconfig
@@ -78,15 +78,6 @@ config EROFS_FAULT_INJECTION
 	  Test EROFS to inject faults such as ENOMEM, EIO, and so on.
 	  If unsure, say N.
 
-config EROFS_FS_IO_MAX_RETRIES
-	int "EROFS IO Maximum Retries"
-	depends on EROFS_FS
-	default "5"
-	help
-	  Maximum retry count of IO Errors.
-
-	  If unsure, leave the default value (5 retries, 6 IOs at most).
-
 config EROFS_FS_ZIP
 	bool "EROFS Data Compresssion Support"
 	depends on EROFS_FS
diff --git a/drivers/staging/erofs/data.c b/drivers/staging/erofs/data.c
index 75b859e48084..65e0d288e2a1 100644
--- a/drivers/staging/erofs/data.c
+++ b/drivers/staging/erofs/data.c
@@ -49,7 +49,7 @@ struct page *__erofs_get_meta_page(struct super_block *sb,
 	/* prefer retrying in the allocator to blindly looping below */
 	const gfp_t gfp = mapping_gfp_constraint(mapping, ~__GFP_FS) |
 		(nofail ? __GFP_NOFAIL : 0);
-	unsigned int io_retries = nofail ? EROFS_IO_MAX_RETRIES_NOFAIL : 0;
+	unsigned int io_retries = nofail ? 5 : 0;
 	struct page *page;
 	int err;
 
diff --git a/drivers/staging/erofs/internal.h b/drivers/staging/erofs/internal.h
index ffd4b1a3fc25..58b8bb9cbb9f 100644
--- a/drivers/staging/erofs/internal.h
+++ b/drivers/staging/erofs/internal.h
@@ -470,12 +470,6 @@ static inline void __submit_bio(struct bio *bio, unsigned int op,
 	submit_bio(bio);
 }
 
-#ifndef CONFIG_EROFS_FS_IO_MAX_RETRIES
-#define EROFS_IO_MAX_RETRIES_NOFAIL	0
-#else
-#define EROFS_IO_MAX_RETRIES_NOFAIL	CONFIG_EROFS_FS_IO_MAX_RETRIES
-#endif
-
 struct page *__erofs_get_meta_page(struct super_block *sb, erofs_blk_t blkaddr,
 				   bool prio, bool nofail);
 
-- 
2.17.1