In message <[EMAIL PROTECTED]>,Kris Van Hees writes:
>I wonder if ext2 itself might defer truncates as well in newer kernels. I'll
>have a look at that.
it looks like we are getting bitten by preallocation in the ext2
filesystem combined with an optimization in inode_setattr(). 2.6's
inode_setattr has the following test:
if (attr->ia_size != i_size_read(inode)) {
error = vmtruncate(inode, attr->ia_size);
if (error || (ia_valid == ATTR_SIZE))
goto out;
} else {
so ext2_truncate() isnt called on cache file open to get rid of
the preallocations. or so i think.
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