On Tue, Apr 10, 2012 at 03:34:17PM -0600, Andreas Dilger wrote:
> Long symlinks with the EXT4_EXTENTS_FL set may have been created at
> one time due to the EXTENTS_FL being inherited from the parent dir.
> While the original cause of such symlinks has been fixed in the
> upstream kernel commit 2dc6b0d48ca0599837df21b14bb8393d0804af57,
> such symlinks may still exist in the wild.
Huh? We're still creating long symlinks with extents, and I'm not
sure why this would be a problem. I don't mind a test for it, but it
seems strange that (a) you think e2fsprogs wouldn't be able to deal
with it, and (b) that we aren't doing it any more. I just tested with
a 3.3 kernel with the patches from the ext4's 3.4 merge window, and it
created a symlink with an extent.
See line 872 of fs/ext4/ialloc.c:
if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_EXTENTS)) {
/* set extent flag only for directory, file and normal symlink*/
if (S_ISDIR(mode) || S_ISREG(mode) || S_ISLNK(mode)) {
ext4_set_inode_flag(inode, EXT4_INODE_EXTENTS);
ext4_ext_tree_init(handle, inode);
}
}
- Ted
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