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aio: fix build when migration is disabled 

When "fs/aio: Add support to aio ring pages migration" was applied, it
broke the build when CONFIG_MIGRATION was disabled.  Wrap the migration
code with a test for CONFIG_MIGRATION to fix this and save a few bytes
when migration is disabled.

Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
This commit is contained in:
Benjamin LaHaise 2013-07-17 09:34:24 -04:00
parent 36bc08cc01
commit 0c45355fc7
1 changed files with 4 additions and 0 deletions
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4
fs/aio.c
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@ -181,6 +181,7 @@ static int aio_set_page_dirty(struct page *page)
return 0;
}
#if IS_ENABLED(CONFIG_MIGRATION)
static int aio_migratepage(struct address_space *mapping, struct page *new,
struct page *old, enum migrate_mode mode)
{
@ -208,10 +209,13 @@ static int aio_migratepage(struct address_space *mapping, struct page *new,
return rc;
}
#endif
static const struct address_space_operations aio_ctx_aops = {
.set_page_dirty = aio_set_page_dirty,
#if IS_ENABLED(CONFIG_MIGRATION)
.migratepage = aio_migratepage,
#endif
};
static int aio_setup_ring(struct kioctx *ctx)