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fs/splice.c: fix mapping_gfp_mask usage

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mapping_gfp_mask() is not supposed to store allocation contex details,
only page location details.  So mapping_gfp_mask should be applied to the
pagecache page allocation, wheras normal (kernel mapped) memory should be
used for surrounding allocations such as radix-tree nodes allocated by
add_to_page_cache.  Context modifiers should be applied on a per-callsite
basis.

So change splice to follow this convention (which is followed in similar
code patterns in core code).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Nick Piggin 2010-05-25 10:25:26 +02:00 committed by Jens Axboe
parent d02a2c077f
commit 0ae0b5d055
1 changed files with 1 additions and 1 deletions
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2
fs/splice.c
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@ -354,7 +354,7 @@ __generic_file_splice_read(struct file *in, loff_t *ppos,
break;
error = add_to_page_cache_lru(page, mapping, index,
mapping_gfp_mask(mapping));
GFP_KERNEL);
if (unlikely(error)) {
page_cache_release(page);
if (error == -EEXIST)