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mm, page_alloc: rename __GFP_WAIT to __GFP_RECLAIM

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__GFP_WAIT was used to signal that the caller was in atomic context and
could not sleep.  Now it is possible to distinguish between true atomic
context and callers that are not willing to sleep.  The latter should
clear __GFP_DIRECT_RECLAIM so kswapd will still wake.  As clearing
__GFP_WAIT behaves differently, there is a risk that people will clear the
wrong flags.  This patch renames __GFP_WAIT to __GFP_RECLAIM to clearly
indicate what it does -- setting it allows all reclaim activity, clearing
them prevents it.

[[email protected]: fix build]
[[email protected]: coding-style fixes]
Signed-off-by: Mel Gorman <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Vlastimil Babka <[email protected]>
Acked-by: Johannes Weiner <[email protected]>
Cc: Christoph Lameter <[email protected]>
Acked-by: David Rientjes <[email protected]>
Cc: Vitaly Wool <[email protected]>
Cc: Rik van Riel <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Mel Gorman 2015-11-06 16:28:28 -08:00 • committed by Linus Torvalds
commit 71baba4b92
38 changed files with 71 additions and 68 deletions
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2
fs/nilfs2/mdt.h
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@ -72,7 +72,7 @@ static inline struct nilfs_mdt_info *NILFS_MDT(const struct inode *inode)
}
/* Default GFP flags using highmem */
#define NILFS_MDT_GFP (__GFP_WAIT | __GFP_IO | __GFP_HIGHMEM)
#define NILFS_MDT_GFP (__GFP_RECLAIM | __GFP_IO | __GFP_HIGHMEM)
int nilfs_mdt_get_block(struct inode *, unsigned long, int,
void (*init_block)(struct inode *,