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gfs2_atomic_open(): fix O_EXCL|O_CREAT handling on cold dcache

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commit 21039132650281de06a169cbe8a0f7e5c578fd8b upstream.

with the way fs/namei.c:do_last() had been done, ->atomic_open()
instances needed to recognize the case when existing file got
found with O_EXCL|O_CREAT, either by falling back to finish_no_open()
or failing themselves.  gfs2 one didn't.

Fixes: 6d4ade986f (GFS2: Add atomic_open support)
Cc: [email protected] # v3.11
Signed-off-by: Al Viro <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Al Viro 2020-03-10 09:31:41 -04:00 • committed by Greg Kroah-Hartman
commit 9719442f9e
1 changed files with 1 additions and 1 deletions
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2
fs/gfs2/inode.c
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@ -1248,7 +1248,7 @@ static int gfs2_atomic_open(struct inode *dir, struct dentry *dentry,
if (!(file->f_mode & FMODE_OPENED))
return finish_no_open(file, d);
dput(d);
return 0;
return excl && (flags & O_CREAT) ? -EEXIST : 0;
}
BUG_ON(d != NULL);