set_pgdir() needs to modify all active mm's to include the new entry.
what it really does is
for_each_task(p) {
if (!p->mm)
continue;
*pgd_offset(p->mm,address) = entry;
}
however, there could be a lazy-tlb thread on another
> From ganesh Fri Nov 24 18:08:15 2000
[ set_pgdir() blah blah blah ]
damn. I was looking at test9 and as usual after shooting my mouth off on l-k
I go look at test11 and find it's fixed there, at least in i386, thanks to
the vmalloc_fault: stuff in do_page_fault. but a lot of other architecture
[cc'ed to maintainers of md and lvm]
hi,
in generic_make_request(), the following code handles stacking:
do {
q = blk_get_queue(bh->b_rdev);
if (!q) {
printk(...)
buffer_IO_error(bh);
break;
}
} while (q
there's a very subtle race with using add_waitqueue() as a barrier,
in the __find_lock_page() which used to exist in test9. it seems to be fixed
in test11, but I thought I should mention this just in case it's ever used in
a similar manner elsewhere.
the race manifests itself as a lost wakeup. th
now that we have inode->i_mapping->dirty_pages, what do we need
inode->i_dirty_buffers for ? I understand the latter was added for the O_SYNC
changes before dirty_pages came into the picture. but now both seem to be
doing more or less the same thing.
ganesh
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Stephen C. Tweedie <[EMAIL PROTECTED]> wrote:
: Hi,
: On Wed, Jan 24, 2001 at 03:25:16PM +0530, V Ganesh wrote:
:> now that we have inode->i_mapping->dirty_pages, what do we need
:> inode->i_dirty_buffers for ?
: Metadata. Specifically, directory contents and indirection
Stephen C. Tweedie <[EMAIL PROTECTED]> wrote:
: That would only complicate things: it would mean we'd have to scan
: both lists on fsync instead of just the one, for example. There are a
we already do; filemap_fdatasync() is called first in sys_fsync(), though
it usually doesn't have much work
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