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dax: dirty inode only if required

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Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dmitry Monakhov 2016-02-05 15:36:55 -08:00 committed by Linus Torvalds
parent ae026204a2
commit d2b2a28e64
1 changed files with 2 additions and 1 deletions
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fs/dax.c
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@ -358,6 +358,7 @@ static int dax_radix_entry(struct address_space *mapping, pgoff_t index,
void *entry;
WARN_ON_ONCE(pmd_entry && !dirty);
if (dirty)
__mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
spin_lock_irq(&mapping->tree_lock);