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new helper: ihold()

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Clones an existing reference to inode; caller must already hold one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Al Viro
2010-10-23 11:11:40 -04:00
parent 646ec4615c
commit 7de9c6ee3e
40 changed files with 57 additions and 49 deletions
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5
fs/aio.c
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@ -1553,10 +1553,9 @@ static void aio_batch_add(struct address_space *mapping,
*
* When we're called, we always have a reference
* on the file, so we must always have a reference
* on the inode, so igrab must always just
* bump the count and move on.
* on the inode, so ihold() is safe here.
*/
atomic_inc(&mapping->host->i_count);
ihold(mapping->host);
abe->mapping = mapping;
hlist_add_head(&abe->list, &batch_hash[bucket]);
return;