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Factor outstanding I/O error handling

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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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11
include/linux/pagemap.h
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@@ -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;