From: Dave Chinner <dchinner@xxxxxxxxxx>
So xfs_ialloc() will only address in-core inode allocation then,
Also, rename xfs_ialloc() to xfs_dir_ialloc_init() in order to
keep everything in xfs_inode.c under the same namespace.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Gao Xiang <hsiangkao@xxxxxxxxxx>
---
fs/xfs/xfs_inode.c | 220 +++++++++++++++----------------------------
fs/xfs/xfs_inode.h | 6 +-
fs/xfs/xfs_qm.c | 27 +++---
fs/xfs/xfs_symlink.c | 8 +-
4 files changed, 98 insertions(+), 163 deletions(-)
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 76282da7a05c..ae6c83d46aaa 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -761,68 +761,25 @@ xfs_inode_inherit_flags2(
}
/*
- * Allocate an inode on disk and return a copy of its in-core version.
- * The in-core inode is locked exclusively. Set mode, nlink, and rdev
- * appropriately within the inode. The uid and gid for the inode are
- * set according to the contents of the given cred structure.
- *
- * Use xfs_dialloc() to allocate the on-disk inode. If xfs_dialloc()
- * has a free inode available, call xfs_iget() to obtain the in-core
- * version of the allocated inode. Finally, fill in the inode and
- * log its initial contents. In this case, ialloc_context would be
- * set to NULL.
- *
- * If xfs_dialloc() does not have an available inode, it will replenish
- * its supply by doing an allocation. Since we can only do one
- * allocation within a transaction without deadlocks, we must commit
- * the current transaction before returning the inode itself.
- * In this case, therefore, we will set ialloc_context and return.
- * The caller should then commit the current transaction, start a new
- * transaction, and call xfs_ialloc() again to actually get the inode.
- *
- * To ensure that some other process does not grab the inode that
- * was allocated during the first call to xfs_ialloc(), this routine
- * also returns the [locked] bp pointing to the head of the freelist
- * as ialloc_context. The caller should hold this buffer across
- * the commit and pass it back into this routine on the second call.
- *
- * If we are allocating quota inodes, we do not have a parent inode
- * to attach to or associate with (i.e. pip == NULL) because they
- * are not linked into the directory structure - they are attached
- * directly to the superblock - and so have no parent.
+ * Initialise a newly allocated inode and return the in-core inode to the
+ * caller locked exclusively.
*/
-static int
-xfs_ialloc(
- xfs_trans_t *tp,
- xfs_inode_t *pip,
- umode_t mode,
- xfs_nlink_t nlink,
- dev_t rdev,
- prid_t prid,
- xfs_buf_t **ialloc_context,
- xfs_inode_t **ipp)
+static struct xfs_inode *
+xfs_init_new_inode(
+ struct xfs_trans *tp,
+ struct xfs_inode *pip,
+ xfs_ino_t ino,
+ umode_t mode,
+ xfs_nlink_t nlink,
+ dev_t rdev,
+ prid_t prid)
{
- struct xfs_mount *mp = tp->t_mountp;
- xfs_ino_t ino;
- xfs_inode_t *ip;
- uint flags;
- int error;
- struct timespec64 tv;
- struct inode *inode;
-
- /*
- * Call the space management code to pick
- * the on-disk inode to be allocated.
- */
- error = xfs_dialloc(tp, pip ? pip->i_ino : 0, mode,
- ialloc_context, &ino);
- if (error)
- return error;
- if (*ialloc_context || ino == NULLFSINO) {
- *ipp = NULL;
- return 0;
- }
- ASSERT(*ialloc_context == NULL);
+ struct xfs_mount *mp = tp->t_mountp;
+ struct xfs_inode *ip;
+ unsigned int flags;
+ int error;
+ struct timespec64 tv;
+ struct inode *inode;
/*
* Protect against obviously corrupt allocation btree records. Later
@@ -833,18 +790,16 @@ xfs_ialloc(
*/
if ((pip && ino == pip->i_ino) || !xfs_verify_dir_ino(mp, ino)) {
xfs_alert(mp, "Allocated a known in-use inode 0x%llx!", ino);
- return -EFSCORRUPTED;
+ return ERR_PTR(-EFSCORRUPTED);
}
/*
- * Get the in-core inode with the lock held exclusively.
- * This is because we're setting fields here we need
- * to prevent others from looking at until we're done.
+ * Get the in-core inode with the lock held exclusively to prevent
+ * others from looking at until we're done.
*/
- error = xfs_iget(mp, tp, ino, XFS_IGET_CREATE,
- XFS_ILOCK_EXCL, &ip);
+ error = xfs_iget(mp, tp, ino, XFS_IGET_CREATE, XFS_ILOCK_EXCL, &ip);
if (error)
- return error;
+ return ERR_PTR(error);
ASSERT(ip != NULL);
inode = VFS_I(ip);
inode->i_mode = mode;
@@ -926,22 +881,21 @@ xfs_ialloc(
/* now that we have an i_mode we can setup the inode structure */
xfs_setup_inode(ip);
-
- *ipp = ip;
- return 0;
+ return ip;
}
/*
- * Allocates a new inode from disk and return a pointer to the
- * incore copy. This routine will internally commit the current
- * transaction and allocate a new one if the Space Manager needed
- * to do an allocation to replenish the inode free-list.
- *
- * This routine is designed to be called from xfs_create and
- * xfs_create_dir.
+ * Allocates a new inode from disk and return a pointer to the incore copy. This
+ * routine will internally commit the current transaction and allocate a new one
+ * if we needed to allocate more on-disk free inodes to perform the requested
+ * operation.
*
+ * If we are allocating quota inodes, we do not have a parent inode to attach to
+ * or associate with (i.e. dp == NULL) because they are not linked into the
+ * directory structure - they are attached directly to the superblock - and so
+ * have no parent.
*/
-int
+struct xfs_inode *
xfs_dir_ialloc(
xfs_trans_t **tpp, /* input: current transaction;
output: may be a new transaction. */
@@ -950,90 +904,60 @@ xfs_dir_ialloc(
umode_t mode,
xfs_nlink_t nlink,
dev_t rdev,
- prid_t prid, /* project id */
- xfs_inode_t **ipp) /* pointer to inode; it will be
- locked. */
+ prid_t prid) /* project id */
{
- xfs_trans_t *tp;
xfs_inode_t *ip;
xfs_buf_t *ialloc_context = NULL;
- int code;
-
- tp = *tpp;
- ASSERT(tp->t_flags & XFS_TRANS_PERM_LOG_RES);
+ xfs_ino_t parent_ino = dp ? dp->i_ino : 0;
+ xfs_ino_t ino;
+ int error;
- /*
- * xfs_ialloc will return a pointer to an incore inode if
- * the Space Manager has an available inode on the free
- * list. Otherwise, it will do an allocation and replenish
- * the freelist. Since we can only do one allocation per
- * transaction without deadlocks, we will need to commit the
- * current transaction and start a new one. We will then
- * need to call xfs_ialloc again to get the inode.
- *
- * If xfs_ialloc did an allocation to replenish the freelist,
- * it returns the bp containing the head of the freelist as
- * ialloc_context. We will hold a lock on it across the
- * transaction commit so that no other process can steal
- * the inode(s) that we've just allocated.
- */
- code = xfs_ialloc(tp, dp, mode, nlink, rdev, prid, &ialloc_context,
- &ip);
+ ASSERT((*tpp)->t_flags & XFS_TRANS_PERM_LOG_RES);
/*
- * Return an error if we were unable to allocate a new inode.
- * This should only happen if we run out of space on disk or
- * encounter a disk error.
+ * Call the space management code to pick the on-disk inode to be
+ * allocated and replenish the freelist. Since we can only do one
+ * allocation per transaction without deadlocks, we will need to
+ * commit the current transaction and start a new one.
+ * If xfs_dialloc did an allocation to replenish the freelist, it
+ * returns the bp containing the head of the freelist as
+ * ialloc_context. We will hold a lock on it across the transaction
+ * commit so that no other process can steal the inode(s) that we've
+ * just allocated.
*/
- if (code) {
- *ipp = NULL;
- return code;
- }
- if (!ialloc_context && !ip) {
- *ipp = NULL;
- return -ENOSPC;
- }
+ error = xfs_dialloc(*tpp, parent_ino, mode, &ialloc_context, &ino);
+ if (error)
+ return ERR_PTR(error);
/*
* If the AGI buffer is non-NULL, then we were unable to get an
* inode in one operation. We need to commit the current
- * transaction and call xfs_ialloc() again. It is guaranteed
+ * transaction and call xfs_dialloc() again. It is guaranteed
* to succeed the second time.
*/
if (ialloc_context) {
- code = xfs_dialloc_roll(&tp, ialloc_context);
- if (code) {
+ error = xfs_dialloc_roll(tpp, ialloc_context);
+ if (error) {
xfs_buf_relse(ialloc_context);
- *tpp = tp;
- *ipp = NULL;
- return code;
+ return ERR_PTR(error);
}
-
/*
- * Call ialloc again. Since we've locked out all
- * other allocations in this allocation group,
- * this call should always succeed.
+ * Call dialloc again. Since we've locked out all other
+ * allocations in this allocation group, this call should
+ * always succeed.
*/
- code = xfs_ialloc(tp, dp, mode, nlink, rdev, prid,
- &ialloc_context, &ip);
-
- /*
- * If we get an error at this point, return to the caller
- * so that the current transaction can be aborted.
- */
- if (code) {
- *tpp = tp;
- *ipp = NULL;
- return code;
- }
- ASSERT(!ialloc_context && ip);
-
+ error = xfs_dialloc(*tpp, parent_ino, mode,
+ &ialloc_context, &ino);
+ if (error)
+ return ERR_PTR(error);
+ ASSERT(!ialloc_context);
}
- *ipp = ip;
- *tpp = tp;
+ if (ino == NULLFSINO)
+ return ERR_PTR(-ENOSPC);
- return 0;
+ /* Initialise the newly allocated inode. */
+ return xfs_init_new_inode(*tpp, dp, ino, mode, nlink, rdev, prid);
}
/*
@@ -1147,9 +1071,12 @@ xfs_create(
* entry pointing to them, but a directory also the "." entry
* pointing to itself.
*/
- error = xfs_dir_ialloc(&tp, dp, mode, is_dir ? 2 : 1, rdev, prid, &ip);
- if (error)
+ ip = xfs_dir_ialloc(&tp, dp, mode, is_dir ? 2 : 1, rdev, prid);
+ if (IS_ERR(ip)) {
+ error = PTR_ERR(ip);
+ ip = NULL;
goto out_trans_cancel;
+ }
/*
* Now we join the directory inode to the transaction. We do not do it
@@ -1269,9 +1196,12 @@ xfs_create_tmpfile(
if (error)
goto out_trans_cancel;
- error = xfs_dir_ialloc(&tp, dp, mode, 0, 0, prid, &ip);
- if (error)
+ ip = xfs_dir_ialloc(&tp, dp, mode, 0, 0, prid);
+ if (IS_ERR(ip)) {
+ error = PTR_ERR(ip);
+ ip = NULL;
goto out_trans_cancel;
+ }
if (mp->m_flags & XFS_MOUNT_WSYNC)
xfs_trans_set_sync(tp);
diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h
index 751a3d1d7d84..95b4ae35e6df 100644
--- a/fs/xfs/xfs_inode.h
+++ b/fs/xfs/xfs_inode.h
@@ -407,9 +407,9 @@ void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode,
xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip);
xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip);
-int xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t,
- xfs_nlink_t, dev_t, prid_t,
- struct xfs_inode **);
+struct xfs_inode *
+xfs_dir_ialloc(struct xfs_trans **, struct xfs_inode *, umode_t, xfs_nlink_t,
+ dev_t, prid_t);
static inline int
xfs_itruncate_extents(
diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index b2a9abee8b2b..bfdf71d87777 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -737,15 +737,15 @@ xfs_qm_destroy_quotainfo(
*/
STATIC int
xfs_qm_qino_alloc(
- xfs_mount_t *mp,
- xfs_inode_t **ip,
- uint flags)
+ struct xfs_mount *mp,
+ struct xfs_inode **ipp,
+ unsigned int flags)
{
xfs_trans_t *tp;
int error;
bool need_alloc = true;
- *ip = NULL;
+ *ipp = NULL;
/*
* With superblock that doesn't have separate pquotino, we
* share an inode between gquota and pquota. If the on-disk
@@ -771,7 +771,7 @@ xfs_qm_qino_alloc(
return -EFSCORRUPTED;
}
if (ino != NULLFSINO) {
- error = xfs_iget(mp, NULL, ino, 0, 0, ip);
+ error = xfs_iget(mp, NULL, ino, 0, 0, ipp);
if (error)
return error;
mp->m_sb.sb_gquotino = NULLFSINO;
@@ -787,11 +787,14 @@ xfs_qm_qino_alloc(
return error;
if (need_alloc) {
- error = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0, ip);
- if (error) {
+ struct xfs_inode *ip;
+
+ ip = xfs_dir_ialloc(&tp, NULL, S_IFREG, 1, 0, 0);
+ if (IS_ERR(ip)) {
xfs_trans_cancel(tp);
- return error;
+ return PTR_ERR(ip);
}
+ *ipp = ip;
}
/*
@@ -812,11 +815,11 @@ xfs_qm_qino_alloc(
mp->m_sb.sb_qflags = mp->m_qflags & XFS_ALL_QUOTA_ACCT;
}
if (flags & XFS_QMOPT_UQUOTA)
- mp->m_sb.sb_uquotino = (*ip)->i_ino;
+ mp->m_sb.sb_uquotino = (*ipp)->i_ino;
else if (flags & XFS_QMOPT_GQUOTA)
- mp->m_sb.sb_gquotino = (*ip)->i_ino;
+ mp->m_sb.sb_gquotino = (*ipp)->i_ino;
else
- mp->m_sb.sb_pquotino = (*ip)->i_ino;
+ mp->m_sb.sb_pquotino = (*ipp)->i_ino;
spin_unlock(&mp->m_sb_lock);
xfs_log_sb(tp);
@@ -826,7 +829,7 @@ xfs_qm_qino_alloc(
xfs_alert(mp, "%s failed (error %d)!", __func__, error);
}
if (need_alloc)
- xfs_finish_inode_setup(*ip);
+ xfs_finish_inode_setup(*ipp);
return error;
}
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index 8e88a7ca387e..988fc771f089 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -223,10 +223,12 @@ xfs_symlink(
/*
* Allocate an inode for the symlink.
*/
- error = xfs_dir_ialloc(&tp, dp, S_IFLNK | (mode & ~S_IFMT), 1, 0,
- prid, &ip);
- if (error)
+ ip = xfs_dir_ialloc(&tp, dp, S_IFLNK | (mode & ~S_IFMT), 1, 0, prid);
+ if (IS_ERR(ip)) {
+ error = PTR_ERR(ip);
+ ip = NULL;
goto out_trans_cancel;
+ }
/*
* Now we join the directory inode to the transaction. We do not do it
--
2.18.4
