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Factor outstanding I/O error handling 

Cleanup: setting an outstanding error on a mapping was open coded too many
times.  Factor it out in mapping_set_error().

Signed-off-by: Guillaume Chazarain <guichaz@yahoo.fr>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Guillaume Chazarain 2007-05-08 00:23:25 -07:00 committed by Linus Torvalds
parent c83e448420
commit 3e9f45bd18
5 changed files with 17 additions and 30 deletions
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5
fs/gfs2/glops.c
View File

@ -163,10 +163,7 @@ static void inode_go_sync(struct gfs2_glock *gl)
if (ip) {
struct address_space *mapping = ip->i_inode.i_mapping;
int error = filemap_fdatawait(mapping);
if (error == -ENOSPC)
set_bit(AS_ENOSPC, &mapping->flags);
else if (error)
set_bit(AS_EIO, &mapping->flags);
mapping_set_error(mapping, error);
}
clear_bit(GLF_DIRTY, &gl->gl_flags);
gfs2_ail_empty_gl(gl);

16
fs/mpage.c
View File

@ -663,12 +663,7 @@ confused:
/*
* The caller has a ref on the inode, so *mapping is stable
*/
if (*ret) {
if (*ret == -ENOSPC)
set_bit(AS_ENOSPC, &mapping->flags);
else
set_bit(AS_EIO, &mapping->flags);
}
mapping_set_error(mapping, *ret);
out:
return bio;
}
@ -776,14 +771,7 @@ retry:
if (writepage) {
ret = (*writepage)(page, wbc);
if (ret) {
if (ret == -ENOSPC)
set_bit(AS_ENOSPC,
&mapping->flags);
else
set_bit(AS_EIO,
&mapping->flags);
}
mapping_set_error(mapping, ret);
} else {
bio = __mpage_writepage(bio, page, get_block,
&last_block_in_bio, &ret, wbc,

11
include/linux/pagemap.h
View File

@ -11,6 +11,7 @@
#include <linux/compiler.h>
#include <asm/uaccess.h>
#include <linux/gfp.h>
#include <linux/bitops.h>
/*
* Bits in mapping->flags. The lower __GFP_BITS_SHIFT bits are the page
@ -19,6 +20,16 @@
#define AS_EIO (__GFP_BITS_SHIFT + 0) /* IO error on async write */
#define AS_ENOSPC (__GFP_BITS_SHIFT + 1) /* ENOSPC on async write */
static inline void mapping_set_error(struct address_space *mapping, int error)
{
if (error) {
if (error == -ENOSPC)
set_bit(AS_ENOSPC, &mapping->flags);
else
set_bit(AS_EIO, &mapping->flags);
}
}
static inline gfp_t mapping_gfp_mask(struct address_space * mapping)
{
return (__force gfp_t)mapping->flags & __GFP_BITS_MASK;

7
mm/page-writeback.c
View File

@ -683,12 +683,7 @@ retry:
}
ret = (*writepage)(page, wbc);
if (ret) {
if (ret == -ENOSPC)
set_bit(AS_ENOSPC, &mapping->flags);
else
set_bit(AS_EIO, &mapping->flags);
}
mapping_set_error(mapping, ret);
if (unlikely(ret == AOP_WRITEPAGE_ACTIVATE))
unlock_page(page);

8
mm/vmscan.c
View File

@ -284,12 +284,8 @@ static void handle_write_error(struct address_space *mapping,
struct page *page, int error)
{
lock_page(page);
if (page_mapping(page) == mapping) {
if (error == -ENOSPC)
set_bit(AS_ENOSPC, &mapping->flags);
else
set_bit(AS_EIO, &mapping->flags);
}
if (page_mapping(page) == mapping)
mapping_set_error(mapping, error);
unlock_page(page);
}