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fs: move inode_dio_wait calls into ->setattr

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Let filesystems handle waiting for direct I/O requests themselves instead
of doing it beforehand.  This means filesystem-specific locks to prevent
new dio referenes from appearing can be held.  This is important to allow
generalizing i_dio_count to non-DIO_LOCKING filesystems.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Christoph Hellwig
2011-06-24 14:29:45 -04:00
committed by Al Viro
parent 11b80f459a
commit 562c72aa57
12 changed files with 24 additions and 3 deletions
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3
fs/ext3/inode.c
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@@ -3216,6 +3216,9 @@ int ext3_setattr(struct dentry *dentry, struct iattr *attr)
ext3_journal_stop(handle);
}
if (attr->ia_valid & ATTR_SIZE)
inode_dio_wait(inode);
if (S_ISREG(inode->i_mode) &&
attr->ia_valid & ATTR_SIZE && attr->ia_size < inode->i_size) {
handle_t *handle;