Re: [PATCH] [2/3] writes: use flags in address space

From: Andrew Morton (akpm@osdl.org)
Date: Sat Aug 02 2003 - 05:48:43 EST


Oliver Xymoron <oxymoron@waste.org> wrote:
>
> Combine mapping->error and ->gfp_mask into ->flags

Some tweaks here too.

- Robustify the logic a bit. At present if writepage() returns an error
  which is not -EIO or -ENOSPC we lose track of it.

  So instead, treat all unknown errors as -EIO.

 fs/mpage.c | 12 ++++++------
 mm/vmscan.c | 6 +++---
 2 files changed, 9 insertions(+), 9 deletions(-)

diff -puN fs/mpage.c~awe-use-gfp_flags-fixes fs/mpage.c
--- 25/fs/mpage.c~awe-use-gfp_flags-fixes 2003-08-02 03:40:29.000000000 -0700
+++ 25-akpm/fs/mpage.c 2003-08-02 03:40:29.000000000 -0700
@@ -566,10 +566,10 @@ confused:
         /*
          * The caller has a ref on the inode, so *mapping is stable
          */
- if (*ret == -EIO)
- set_bit(AS_EIO, &mapping->flags);
- else if (*ret == -ENOSPC)
+ if (*ret == -ENOSPC)
                 set_bit(AS_ENOSPC, &mapping->flags);
+ else
+ set_bit(AS_EIO, &mapping->flags);
 out:
         return bio;
 }
@@ -671,10 +671,10 @@ mpage_writepages(struct address_space *m
                                         test_clear_page_dirty(page)) {
                         if (writepage) {
                                 ret = (*writepage)(page, wbc);
- if (ret == -EIO)
- set_bit(AS_EIO, &mapping->flags);
- else if (ret == -ENOSPC)
+ if (ret == -ENOSPC)
                                         set_bit(AS_ENOSPC, &mapping->flags);
+ else
+ set_bit(AS_EIO, &mapping->flags);
                         } else {
                                 bio = mpage_writepage(bio, page, get_block,
                                         &last_block_in_bio, &ret, wbc);
diff -puN mm/vmscan.c~awe-use-gfp_flags-fixes mm/vmscan.c
--- 25/mm/vmscan.c~awe-use-gfp_flags-fixes 2003-08-02 03:40:29.000000000 -0700
+++ 25-akpm/mm/vmscan.c 2003-08-02 03:40:29.000000000 -0700
@@ -252,10 +252,10 @@ static void handle_write_error(struct ad
 {
         lock_page(page);
         if (page->mapping == mapping) {
- if (error == -EIO)
- set_bit(AS_EIO, &mapping->flags);
- else if (error == -ENOSPC)
+ if (error == -ENOSPC)
                         set_bit(AS_ENOSPC, &mapping->flags);
+ else
+ set_bit(AS_EIO, &mapping->flags);
         }
         unlock_page(page);
 }

_

-
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