summaryrefslogtreecommitdiff
path: root/target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch
diff options
context:
space:
mode:
authorJonas Gorski <jogo@openwrt.org>2015-12-02 22:23:22 +0000
committerJonas Gorski <jogo@openwrt.org>2015-12-02 22:23:22 +0000
commit621677154f39f2e0b698a558b8b795db84a8e014 (patch)
tree3c4d60241f9ad7f52f12aa022af8b5a684b2ab08 /target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch
parent4454a3fb6375cf1adf17f63a54cd7660bc40caa7 (diff)
downloadmtk-20170518-621677154f39f2e0b698a558b8b795db84a8e014.zip
mtk-20170518-621677154f39f2e0b698a558b8b795db84a8e014.tar.gz
mtk-20170518-621677154f39f2e0b698a558b8b795db84a8e014.tar.bz2
kernel: add linux 4.4 support
Based on 4.4-rc3. Runtime tested on MIPS. Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 47701
Diffstat (limited to 'target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch')
-rw-r--r--target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch58
1 files changed, 58 insertions, 0 deletions
diff --git a/target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch b/target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch
new file mode 100644
index 0000000..f9d5261
--- /dev/null
+++ b/target/linux/generic/patches-4.4/111-jffs2-add-RENAME_EXCHANGE-support.patch
@@ -0,0 +1,58 @@
+From: Felix Fietkau <nbd@openwrt.org>
+Date: Sat, 25 Apr 2015 12:41:32 +0200
+Subject: [PATCH] jffs2: add RENAME_EXCHANGE support
+
+Signed-off-by: Felix Fietkau <nbd@openwrt.org>
+---
+
+--- a/fs/jffs2/dir.c
++++ b/fs/jffs2/dir.c
+@@ -782,7 +782,7 @@ static int jffs2_rename (struct inode *o
+ uint8_t type;
+ uint32_t now;
+
+- if (flags & ~RENAME_WHITEOUT)
++ if (flags & ~(RENAME_WHITEOUT | RENAME_EXCHANGE))
+ return -EINVAL;
+
+ /* The VFS will check for us and prevent trying to rename a
+@@ -790,7 +790,7 @@ static int jffs2_rename (struct inode *o
+ * the VFS can't check whether the victim is empty. The filesystem
+ * needs to do that for itself.
+ */
+- if (d_really_is_positive(new_dentry)) {
++ if (d_really_is_positive(new_dentry) && !(flags & RENAME_EXCHANGE)) {
+ victim_f = JFFS2_INODE_INFO(d_inode(new_dentry));
+ if (d_is_dir(new_dentry)) {
+ struct jffs2_full_dirent *fd;
+@@ -825,7 +825,7 @@ static int jffs2_rename (struct inode *o
+ if (ret)
+ return ret;
+
+- if (victim_f) {
++ if (victim_f && !(flags & RENAME_EXCHANGE)) {
+ /* There was a victim. Kill it off nicely */
+ if (d_is_dir(new_dentry))
+ clear_nlink(d_inode(new_dentry));
+@@ -851,6 +851,12 @@ static int jffs2_rename (struct inode *o
+ if (flags & RENAME_WHITEOUT)
+ /* Replace with whiteout */
+ ret = jffs2_whiteout(old_dir_i, old_dentry);
++ else if (flags & RENAME_EXCHANGE)
++ /* Replace the original */
++ ret = jffs2_do_link(c, JFFS2_INODE_INFO(old_dir_i),
++ d_inode(new_dentry)->i_ino, type,
++ old_dentry->d_name.name, old_dentry->d_name.len,
++ now);
+ else
+ /* Unlink the original */
+ ret = jffs2_do_unlink(c, JFFS2_INODE_INFO(old_dir_i),
+@@ -877,7 +883,7 @@ static int jffs2_rename (struct inode *o
+ return ret;
+ }
+
+- if (d_is_dir(old_dentry))
++ if (d_is_dir(old_dentry) && !(flags & RENAME_EXCHANGE))
+ drop_nlink(old_dir_i);
+
+ new_dir_i->i_mtime = new_dir_i->i_ctime = old_dir_i->i_mtime = old_dir_i->i_ctime = ITIME(now);