The patch titled
iget: stop FreeVXFS from using iget() and read_inode()
has been added to the -mm tree. Its filename is
iget-stop-freevxfs-from-using-iget-and-read_inode.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: iget: stop FreeVXFS from using iget() and read_inode()
From: David Howells <dhowells@xxxxxxxxxx>
Stop the FreeVXFS filesystem from using iget() and read_inode(). Replace
vxfs_read_inode() with vxfs_iget(), and call that instead of iget().
vxfs_iget() then uses iget_locked() directly and returns a proper error code
instead of an inode in the event of an error.
vxfs_fill_super() returns any error incurred when getting the root inode
instead of EINVAL.
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/freevxfs/vxfs_extern.h | 2 -
fs/freevxfs/vxfs_inode.c | 43 +++++++++++++++++++++++-------------
fs/freevxfs/vxfs_lookup.c | 6 ++---
fs/freevxfs/vxfs_super.c | 10 +++++---
4 files changed, 39 insertions(+), 22 deletions(-)
diff -puN fs/freevxfs/vxfs_extern.h~iget-stop-freevxfs-from-using-iget-and-read_inode fs/freevxfs/vxfs_extern.h
--- a/fs/freevxfs/vxfs_extern.h~iget-stop-freevxfs-from-using-iget-and-read_inode
+++ a/fs/freevxfs/vxfs_extern.h
@@ -58,7 +58,7 @@ extern struct inode * vxfs_get_fake_ino
extern void vxfs_put_fake_inode(struct inode *);
extern struct vxfs_inode_info * vxfs_blkiget(struct super_block *, u_long, ino_t);
extern struct vxfs_inode_info * vxfs_stiget(struct super_block *, ino_t);
-extern void vxfs_read_inode(struct inode *);
+extern struct inode * vxfs_iget(struct super_block *, unsigned long);
extern void vxfs_clear_inode(struct inode *);
/* vxfs_lookup.c */
diff -puN fs/freevxfs/vxfs_inode.c~iget-stop-freevxfs-from-using-iget-and-read_inode fs/freevxfs/vxfs_inode.c
--- a/fs/freevxfs/vxfs_inode.c~iget-stop-freevxfs-from-using-iget-and-read_inode
+++ a/fs/freevxfs/vxfs_inode.c
@@ -129,7 +129,7 @@ fail:
* Description:
* Search the for inode number @ino in the filesystem
* described by @sbp. Use the specified inode table (@ilistp).
- * Returns the matching VxFS inode on success, else a NULL pointer.
+ * Returns the matching VxFS inode on success, else an error code.
*/
static struct vxfs_inode_info *
__vxfs_iget(ino_t ino, struct inode *ilistp)
@@ -157,12 +157,12 @@ __vxfs_iget(ino_t ino, struct inode *ili
}
printk(KERN_WARNING "vxfs: error on page %p\n", pp);
- return NULL;
+ return ERR_CAST(pp);
fail:
printk(KERN_WARNING "vxfs: unable to read inode %ld\n", (unsigned long)ino);
vxfs_put_page(pp);
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
/**
@@ -178,7 +178,10 @@ fail:
struct vxfs_inode_info *
vxfs_stiget(struct super_block *sbp, ino_t ino)
{
- return __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
+ struct vxfs_inode_info *vip;
+
+ vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_stilist);
+ return IS_ERR(vip) ? NULL : vip;
}
/**
@@ -282,23 +285,32 @@ vxfs_put_fake_inode(struct inode *ip)
}
/**
- * vxfs_read_inode - fill in inode information
- * @ip: inode pointer to fill
+ * vxfs_iget - get an inode
+ * @sbp: the superblock to get the inode for
+ * @ino: the number of the inode to get
*
* Description:
- * vxfs_read_inode reads the disk inode for @ip and fills
- * in all relevant fields in @ip.
+ * vxfs_read_inode creates an inode, reads the disk inode for @ino and fills
+ * in all relevant fields in the new inode.
*/
-void
-vxfs_read_inode(struct inode *ip)
+struct inode *
+vxfs_iget(struct super_block *sbp, ino_t ino)
{
- struct super_block *sbp = ip->i_sb;
struct vxfs_inode_info *vip;
const struct address_space_operations *aops;
- ino_t ino = ip->i_ino;
+ struct inode *ip;
- if (!(vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist)))
- return;
+ ip = iget_locked(sbp, ino);
+ if (!ip)
+ return ERR_PTR(-ENOMEM);
+ if (!(ip->i_state & I_NEW))
+ return ip;
+
+ vip = __vxfs_iget(ino, VXFS_SBI(sbp)->vsi_ilist);
+ if (IS_ERR(vip)) {
+ iget_failed(ip);
+ return ERR_CAST(vip);
+ }
vxfs_iinit(ip, vip);
@@ -323,7 +335,8 @@ vxfs_read_inode(struct inode *ip)
} else
init_special_inode(ip, ip->i_mode, old_decode_dev(vip->vii_rdev));
- return;
+ unlock_new_inode(ip);
+ return ip;
}
/**
diff -puN fs/freevxfs/vxfs_lookup.c~iget-stop-freevxfs-from-using-iget-and-read_inode fs/freevxfs/vxfs_lookup.c
--- a/fs/freevxfs/vxfs_lookup.c~iget-stop-freevxfs-from-using-iget-and-read_inode
+++ a/fs/freevxfs/vxfs_lookup.c
@@ -213,10 +213,10 @@ vxfs_lookup(struct inode *dip, struct de
lock_kernel();
ino = vxfs_inode_by_name(dip, dp);
if (ino) {
- ip = iget(dip->i_sb, ino);
- if (!ip) {
+ ip = vxfs_iget(dip->i_sb, ino);
+ if (IS_ERR(ip)) {
unlock_kernel();
- return ERR_PTR(-EACCES);
+ return ERR_CAST(ip);
}
}
unlock_kernel();
diff -puN fs/freevxfs/vxfs_super.c~iget-stop-freevxfs-from-using-iget-and-read_inode fs/freevxfs/vxfs_super.c
--- a/fs/freevxfs/vxfs_super.c~iget-stop-freevxfs-from-using-iget-and-read_inode
+++ a/fs/freevxfs/vxfs_super.c
@@ -60,7 +60,6 @@ static int vxfs_statfs(struct dentry *,
static int vxfs_remount(struct super_block *, int *, char *);
static const struct super_operations vxfs_super_ops = {
- .read_inode = vxfs_read_inode,
.clear_inode = vxfs_clear_inode,
.put_super = vxfs_put_super,
.statfs = vxfs_statfs,
@@ -153,6 +152,7 @@ static int vxfs_fill_super(struct super_
struct buffer_head *bp = NULL;
u_long bsize;
struct inode *root;
+ int ret = -EINVAL;
sbp->s_flags |= MS_RDONLY;
@@ -219,7 +219,11 @@ static int vxfs_fill_super(struct super_
}
sbp->s_op = &vxfs_super_ops;
- root = iget(sbp, VXFS_ROOT_INO);
+ root = vxfs_iget(sbp, VXFS_ROOT_INO);
+ if (IS_ERR(root)) {
+ ret = PTR_ERR(root);
+ goto out;
+ }
sbp->s_root = d_alloc_root(root);
if (!sbp->s_root) {
iput(root);
@@ -236,7 +240,7 @@ out_free_ilist:
out:
brelse(bp);
kfree(infp);
- return -EINVAL;
+ return ret;
}
/*
_
Patches currently in -mm which might be from dhowells@xxxxxxxxxx are
origin.patch
64-bit-i_version-afs-fixes.patch
add-an-err_cast-function-to-complement-err_ptr-and-co.patch
convert-err_ptrptr_errp-instances-to-err_castp.patch
iget-introduce-a-function-to-register-iget-failure.patch
iget-use-iget_failed-in-afs.patch
iget-use-iget_failed-in-gfs2.patch
iget-stop-affs-from-using-iget-and-read_inode-try.patch
iget-stop-affs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-autofs-from-using-iget-and-read_inode.patch
iget-stop-befs-from-using-iget-and-read_inode-try.patch
iget-stop-bfs-from-using-iget-and-read_inode-try.patch
iget-stop-cifs-from-using-iget-and-read_inode-try.patch
iget-stop-efs-from-using-iget-and-read_inode-try.patch
iget-stop-efs-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext2-from-using-iget-and-read_inode-try.patch
iget-stop-ext2-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext3-from-using-iget-and-read_inode-try.patch
iget-stop-ext3-from-using-iget-and-read_inode-try-checkpatch-fixes.patch
iget-stop-ext4-from-using-iget-and-read_inode-try.patch
iget-stop-fat-from-using-iget-and-read_inode-try.patch
iget-stop-freevxfs-from-using-iget-and-read_inode.patch
iget-stop-fuse-from-using-iget-and-read_inode-try.patch
iget-stop-hfsplus-from-using-iget-and-read_inode.patch
iget-stop-isofs-from-using-read_inode.patch
iget-stop-jffs2-from-using-iget-and-read_inode.patch
iget-stop-jfs-from-using-iget-and-read_inode-try.patch
iget-stop-the-minix-filesystem-from-using-iget-and.patch
iget-stop-procfs-from-using-iget-and-read_inode.patch
iget-stop-qnx4-from-using-iget-and-read_inode-try.patch
iget-stop-romfs-from-using-iget-and-read_inode.patch
iget-stop-the-sysv-filesystem-from-using-iget-and.patch
iget-stop-ufs-from-using-iget-and-read_inode-try.patch
iget-stop-openpromfs-from-using-iget-and.patch
iget-stop-hostfs-from-using-iget-and-read_inode.patch
iget-stop-hppfs-from-using-iget-and-read_inode.patch
iget-remove-iget-and-the-read_inode-super-op-as.patch
mutex-subsystem-synchro-test-module.patch
-
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