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Subject[PATCH v3 1/2] ceph: factor out ceph_lookup_inode()
Date
This function will be used by __fh_to_dentry and by the quotas code, to
find quota realm inodes that are not visible in the mountpoint.

Signed-off-by: Luis Henriques <lhenriques@suse.com>
---
fs/ceph/export.c | 14 +++++++++++++-
fs/ceph/super.h | 1 +
2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/fs/ceph/export.c b/fs/ceph/export.c
index 3c59ad180ef0..0d8ead82c816 100644
--- a/fs/ceph/export.c
+++ b/fs/ceph/export.c
@@ -59,7 +59,7 @@ static int ceph_encode_fh(struct inode *inode, u32 *rawfh, int *max_len,
return type;
}

-static struct dentry *__fh_to_dentry(struct super_block *sb, u64 ino)
+struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino)
{
struct ceph_mds_client *mdsc = ceph_sb_to_client(sb)->mdsc;
struct inode *inode;
@@ -92,12 +92,24 @@ static struct dentry *__fh_to_dentry(struct super_block *sb, u64 ino)
ceph_mdsc_put_request(req);
if (!inode)
return ERR_PTR(-ESTALE);
+ if (err)
+ return ERR_PTR(err);
if (inode->i_nlink == 0) {
iput(inode);
return ERR_PTR(-ESTALE);
}
}

+ return inode;
+}
+
+static struct dentry *__fh_to_dentry(struct super_block *sb, u64 ino)
+{
+ struct inode *inode = ceph_lookup_inode(sb, ino);
+
+ if (IS_ERR(inode))
+ return ERR_CAST(inode);
+
return d_obtain_alias(inode);
}

diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 16c03188578e..976f200164f9 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -1082,6 +1082,7 @@ extern long ceph_ioctl(struct file *file, unsigned int cmd, unsigned long arg);

/* export.c */
extern const struct export_operations ceph_export_ops;
+struct inode *ceph_lookup_inode(struct super_block *sb, u64 ino);

/* locks.c */
extern __init void ceph_flock_init(void);
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