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| author | Hauke Mehrtens <hauke@hauke-m.de> | 2018-11-01 17:57:55 +0100 |
|---|---|---|
| committer | Hauke Mehrtens <hauke@hauke-m.de> | 2018-12-15 12:50:06 +0100 |
| commit | 52a82ce3dd901a1536c7d7d9d963e9c2d761c816 (patch) | |
| tree | 79020fb59420fcea7bdc4b12272f7251e101fe64 /target/linux/generic/pending-4.19/140-jffs2-use-.rename2-and-add-RENAME_WHITEOUT-support.patch | |
| parent | a272af75cd8c67d265400f96c1e6bb172315c23c (diff) | |
| download | upstream-52a82ce3dd901a1536c7d7d9d963e9c2d761c816.tar.gz upstream-52a82ce3dd901a1536c7d7d9d963e9c2d761c816.tar.bz2 upstream-52a82ce3dd901a1536c7d7d9d963e9c2d761c816.zip | |
kernel: Copy patches from kernel 4.14 to 4.19
This just copies the files from the kernel 4.14 specific folders into
the kernel 4.19 specific folder, no changes are done to the files in
this commit.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Diffstat (limited to 'target/linux/generic/pending-4.19/140-jffs2-use-.rename2-and-add-RENAME_WHITEOUT-support.patch')
| -rw-r--r-- | target/linux/generic/pending-4.19/140-jffs2-use-.rename2-and-add-RENAME_WHITEOUT-support.patch | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.19/140-jffs2-use-.rename2-and-add-RENAME_WHITEOUT-support.patch b/target/linux/generic/pending-4.19/140-jffs2-use-.rename2-and-add-RENAME_WHITEOUT-support.patch new file mode 100644 index 0000000000..c97e93250b --- /dev/null +++ b/target/linux/generic/pending-4.19/140-jffs2-use-.rename2-and-add-RENAME_WHITEOUT-support.patch @@ -0,0 +1,62 @@ +From: Felix Fietkau <nbd@nbd.name> +Subject: jffs2: use .rename2 and add RENAME_WHITEOUT support + +It is required for renames on overlayfs + +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/fs/jffs2/dir.c ++++ b/fs/jffs2/dir.c +@@ -752,6 +752,24 @@ static int jffs2_mknod (struct inode *di + return ret; + } + ++static int jffs2_whiteout (struct inode *old_dir, struct dentry *old_dentry) ++{ ++ struct dentry *wh; ++ int err; ++ ++ wh = d_alloc(old_dentry->d_parent, &old_dentry->d_name); ++ if (!wh) ++ return -ENOMEM; ++ ++ err = jffs2_mknod(old_dir, wh, S_IFCHR | WHITEOUT_MODE, ++ WHITEOUT_DEV); ++ if (err) ++ return err; ++ ++ d_rehash(wh); ++ return 0; ++} ++ + static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry, + struct inode *new_dir_i, struct dentry *new_dentry, + unsigned int flags) +@@ -762,7 +780,7 @@ static int jffs2_rename (struct inode *o + uint8_t type; + uint32_t now; + +- if (flags & ~RENAME_NOREPLACE) ++ if (flags & ~(RENAME_NOREPLACE|RENAME_WHITEOUT)) + return -EINVAL; + + /* The VFS will check for us and prevent trying to rename a +@@ -828,9 +846,14 @@ static int jffs2_rename (struct inode *o + if (d_is_dir(old_dentry) && !victim_f) + inc_nlink(new_dir_i); + +- /* Unlink the original */ +- ret = jffs2_do_unlink(c, JFFS2_INODE_INFO(old_dir_i), +- old_dentry->d_name.name, old_dentry->d_name.len, NULL, now); ++ if (flags & RENAME_WHITEOUT) ++ /* Replace with whiteout */ ++ ret = jffs2_whiteout(old_dir_i, old_dentry); ++ else ++ /* Unlink the original */ ++ ret = jffs2_do_unlink(c, JFFS2_INODE_INFO(old_dir_i), ++ old_dentry->d_name.name, ++ old_dentry->d_name.len, NULL, now); + + /* We don't touch inode->i_nlink */ + |