From: Darrick J. Wong <djwong@xxxxxxxxxx>
Create a new libxfs function to link a newly created inode into a
directory. The upcoming metadata directory feature will need this to
create a metadata directory tree.
Signed-off-by: Darrick J. Wong <djwong@xxxxxxxxxx>
---
fs/xfs/libxfs/xfs_dir2.c | 47 +++++++++++++++++++++++++++++++++++++++++
fs/xfs/libxfs/xfs_dir2.h | 12 ++++++++++
fs/xfs/xfs_inode.c | 53 +++++++++++++++-------------------------------
fs/xfs/xfs_symlink.c | 43 ++++++++++++++++---------------------
4 files changed, 95 insertions(+), 60 deletions(-)
diff --git a/fs/xfs/libxfs/xfs_dir2.c b/fs/xfs/libxfs/xfs_dir2.c
index 525b23a3800b6..16dfe869ef2de 100644
--- a/fs/xfs/libxfs/xfs_dir2.c
+++ b/fs/xfs/libxfs/xfs_dir2.c
@@ -19,6 +19,9 @@
#include "xfs_error.h"
#include "xfs_trace.h"
#include "xfs_health.h"
+#include "xfs_bmap_btree.h"
+#include "xfs_trans_space.h"
+#include "xfs_parent.h"
const struct xfs_name xfs_name_dotdot = {
.name = (const unsigned char *)"..",
@@ -782,3 +785,47 @@ xfs_dir2_compname(
return xfs_ascii_ci_compname(args, name, len);
return xfs_da_compname(args, name, len);
}
+
+/*
+ * Given a directory @dp, a newly allocated inode @ip, and a @name, link @ip
+ * into @dp under the given @name. If @ip is a directory, it will be
+ * initialized. Both inodes must have the ILOCK held and the transaction must
+ * have sufficient blocks reserved.
+ */
+int
+xfs_dir_create_child(
+ struct xfs_trans *tp,
+ unsigned int resblks,
+ struct xfs_dir_update *du)
+{
+ struct xfs_inode *dp = du->dp;
+ const struct xfs_name *name = du->name;
+ struct xfs_inode *ip = du->ip;
+ int error;
+
+ ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL));
+ ASSERT(xfs_isilocked(dp, XFS_ILOCK_EXCL));
+
+ error = xfs_dir_createname(tp, dp, name, ip->i_ino, resblks);
+ if (error) {
+ ASSERT(error != -ENOSPC);
+ return error;
+ }
+
+ xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
+ xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
+
+ if (S_ISDIR(VFS_I(ip)->i_mode)) {
+ error = xfs_dir_init(tp, ip, dp);
+ if (error)
+ return error;
+
+ xfs_bumplink(tp, dp);
+ }
+
+ /*
+ * If we have parent pointers, we need to add the attribute containing
+ * the parent information now.
+ */
+ return xfs_parent_add(tp, du->ppargs, dp, name, ip);
+}
diff --git a/fs/xfs/libxfs/xfs_dir2.h b/fs/xfs/libxfs/xfs_dir2.h
index ca1949ed4f5e8..71a8d8e8a8e7b 100644
--- a/fs/xfs/libxfs/xfs_dir2.h
+++ b/fs/xfs/libxfs/xfs_dir2.h
@@ -293,4 +293,16 @@ static inline unsigned char xfs_ascii_ci_xfrm(unsigned char c)
return c;
}
+struct xfs_parent_args;
+
+struct xfs_dir_update {
+ struct xfs_inode *dp;
+ const struct xfs_name *name;
+ struct xfs_inode *ip;
+ struct xfs_parent_args *ppargs;
+};
+
+int xfs_dir_create_child(struct xfs_trans *tp, unsigned int resblks,
+ struct xfs_dir_update *du);
+
#endif /* __XFS_DIR2_H__ */
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index 0e37bbc5b6784..401bd2a455196 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -754,14 +754,16 @@ xfs_create(
const struct xfs_icreate_args *args,
struct xfs_inode **ipp)
{
+ struct xfs_dir_update du = {
+ .dp = dp,
+ .name = name,
+ };
struct xfs_mount *mp = dp->i_mount;
- struct xfs_inode *ip = NULL;
struct xfs_trans *tp = NULL;
struct xfs_dquot *udqp;
struct xfs_dquot *gdqp;
struct xfs_dquot *pdqp;
struct xfs_trans_res *tres;
- struct xfs_parent_args *ppargs;
xfs_ino_t ino;
bool unlock_dp_on_error = false;
bool is_dir = S_ISDIR(args->mode);
@@ -791,7 +793,7 @@ xfs_create(
tres = &M_RES(mp)->tr_create;
}
- error = xfs_parent_start(mp, &ppargs);
+ error = xfs_parent_start(mp, &du.ppargs);
if (error)
goto out_release_dquots;
@@ -822,7 +824,7 @@ xfs_create(
*/
error = xfs_dialloc(&tp, dp->i_ino, args->mode, &ino);
if (!error)
- error = xfs_icreate(tp, ino, args, &ip);
+ error = xfs_icreate(tp, ino, args, &du.ip);
if (error)
goto out_trans_cancel;
@@ -835,28 +837,7 @@ xfs_create(
*/
xfs_trans_ijoin(tp, dp, 0);
- error = xfs_dir_createname(tp, dp, name, ip->i_ino,
- resblks - XFS_IALLOC_SPACE_RES(mp));
- if (error) {
- ASSERT(error != -ENOSPC);
- goto out_trans_cancel;
- }
- xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
- xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
-
- if (is_dir) {
- error = xfs_dir_init(tp, ip, dp);
- if (error)
- goto out_trans_cancel;
-
- xfs_bumplink(tp, dp);
- }
-
- /*
- * If we have parent pointers, we need to add the attribute containing
- * the parent information now.
- */
- error = xfs_parent_add(tp, ppargs, dp, name, ip);
+ error = xfs_dir_create_child(tp, resblks, &du);
if (error)
goto out_trans_cancel;
@@ -864,7 +845,7 @@ xfs_create(
* Create ip with a reference from dp, and add '.' and '..' references
* if it's a directory.
*/
- xfs_dir_update_hook(dp, ip, 1, name);
+ xfs_dir_update_hook(dp, du.ip, 1, name);
/*
* If this is a synchronous mount, make sure that the
@@ -879,7 +860,7 @@ xfs_create(
* These ids of the inode couldn't have changed since the new
* inode has been locked ever since it was created.
*/
- xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
+ xfs_qm_vop_create_dqattach(tp, du.ip, udqp, gdqp, pdqp);
error = xfs_trans_commit(tp);
if (error)
@@ -889,10 +870,10 @@ xfs_create(
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp);
- *ipp = ip;
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ *ipp = du.ip;
+ xfs_iunlock(du.ip, XFS_ILOCK_EXCL);
xfs_iunlock(dp, XFS_ILOCK_EXCL);
- xfs_parent_finish(mp, ppargs);
+ xfs_parent_finish(mp, du.ppargs);
return 0;
out_trans_cancel:
@@ -903,13 +884,13 @@ xfs_create(
* setup of the inode and release the inode. This prevents recursive
* transactions and deadlocks from xfs_inactive.
*/
- if (ip) {
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
- xfs_finish_inode_setup(ip);
- xfs_irele(ip);
+ if (du.ip) {
+ xfs_iunlock(du.ip, XFS_ILOCK_EXCL);
+ xfs_finish_inode_setup(du.ip);
+ xfs_irele(du.ip);
}
out_parent:
- xfs_parent_finish(mp, ppargs);
+ xfs_parent_finish(mp, du.ppargs);
out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
diff --git a/fs/xfs/xfs_symlink.c b/fs/xfs/xfs_symlink.c
index a4872a6903e69..a923160a7dae0 100644
--- a/fs/xfs/xfs_symlink.c
+++ b/fs/xfs/xfs_symlink.c
@@ -93,9 +93,12 @@ xfs_symlink(
struct xfs_icreate_args args = {
.nlink = 1,
};
+ struct xfs_dir_update du = {
+ .dp = dp,
+ .name = link_name,
+ };
struct xfs_mount *mp = dp->i_mount;
struct xfs_trans *tp = NULL;
- struct xfs_inode *ip = NULL;
int error = 0;
int pathlen;
bool unlock_dp_on_error = false;
@@ -105,7 +108,6 @@ xfs_symlink(
struct xfs_dquot *pdqp;
uint resblks;
xfs_ino_t ino;
- struct xfs_parent_args *ppargs;
*ipp = NULL;
@@ -144,7 +146,7 @@ xfs_symlink(
fs_blocks = xfs_symlink_blocks(mp, pathlen);
resblks = xfs_symlink_space_res(mp, link_name->len, fs_blocks);
- error = xfs_parent_start(mp, &ppargs);
+ error = xfs_parent_start(mp, &du.ppargs);
if (error)
goto out_release_dquots;
@@ -169,7 +171,7 @@ xfs_symlink(
*/
error = xfs_dialloc(&tp, dp->i_ino, S_IFLNK, &ino);
if (!error)
- error = xfs_icreate(tp, ino, &args, &ip);
+ error = xfs_icreate(tp, ino, &args, &du.ip);
if (error)
goto out_trans_cancel;
@@ -185,31 +187,24 @@ xfs_symlink(
/*
* Also attach the dquot(s) to it, if applicable.
*/
- xfs_qm_vop_create_dqattach(tp, ip, udqp, gdqp, pdqp);
+ xfs_qm_vop_create_dqattach(tp, du.ip, udqp, gdqp, pdqp);
resblks -= XFS_IALLOC_SPACE_RES(mp);
- error = xfs_symlink_write_target(tp, ip, target_path, pathlen,
+ error = xfs_symlink_write_target(tp, du.ip, target_path, pathlen,
fs_blocks, resblks);
if (error)
goto out_trans_cancel;
resblks -= fs_blocks;
- i_size_write(VFS_I(ip), ip->i_disk_size);
+ i_size_write(VFS_I(du.ip), du.ip->i_disk_size);
/*
* Create the directory entry for the symlink.
*/
- error = xfs_dir_createname(tp, dp, link_name, ip->i_ino, resblks);
+ error = xfs_dir_create_child(tp, resblks, &du);
if (error)
goto out_trans_cancel;
- xfs_trans_ichgtime(tp, dp, XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG);
- xfs_trans_log_inode(tp, dp, XFS_ILOG_CORE);
- /* Add parent pointer for the new symlink. */
- error = xfs_parent_add(tp, ppargs, dp, link_name, ip);
- if (error)
- goto out_trans_cancel;
-
- xfs_dir_update_hook(dp, ip, 1, link_name);
+ xfs_dir_update_hook(dp, du.ip, 1, link_name);
/*
* If this is a synchronous mount, make sure that the
@@ -227,10 +222,10 @@ xfs_symlink(
xfs_qm_dqrele(gdqp);
xfs_qm_dqrele(pdqp);
- *ipp = ip;
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
+ *ipp = du.ip;
+ xfs_iunlock(du.ip, XFS_ILOCK_EXCL);
xfs_iunlock(dp, XFS_ILOCK_EXCL);
- xfs_parent_finish(mp, ppargs);
+ xfs_parent_finish(mp, du.ppargs);
return 0;
out_trans_cancel:
@@ -241,13 +236,13 @@ xfs_symlink(
* setup of the inode and release the inode. This prevents recursive
* transactions and deadlocks from xfs_inactive.
*/
- if (ip) {
- xfs_iunlock(ip, XFS_ILOCK_EXCL);
- xfs_finish_inode_setup(ip);
- xfs_irele(ip);
+ if (du.ip) {
+ xfs_iunlock(du.ip, XFS_ILOCK_EXCL);
+ xfs_finish_inode_setup(du.ip);
+ xfs_irele(du.ip);
}
out_parent:
- xfs_parent_finish(mp, ppargs);
+ xfs_parent_finish(mp, du.ppargs);
out_release_dquots:
xfs_qm_dqrele(udqp);
xfs_qm_dqrele(gdqp);
