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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: fix sync and dio writes across stripe boundaries
  libceph: fix page calculation for non-page-aligned io
  ceph: fix page alignment corrections
This commit is contained in:
Linus Torvalds 2011-07-05 13:15:57 -07:00
parent a8728d3554 d7f124f129
commit 121782a248
2 changed files with 12 additions and 12 deletions
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14
fs/ceph/file.c
View File

@ -290,7 +290,6 @@ static int striped_read(struct inode *inode,
struct ceph_inode_info *ci = ceph_inode(inode);
u64 pos, this_len;
int io_align, page_align;
int page_off = off & ~PAGE_CACHE_MASK; /* first byte's offset in page */
int left, pages_left;
int read;
struct page **page_pos;
@ -326,12 +325,11 @@ static int striped_read(struct inode *inode,
ret, hit_stripe ? " HITSTRIPE" : "", was_short ? " SHORT" : "");
if (ret > 0) {
int didpages =
((pos & ~PAGE_CACHE_MASK) + ret) >> PAGE_CACHE_SHIFT;
int didpages = (page_align + ret) >> PAGE_CACHE_SHIFT;
if (read < pos - off) {
dout(" zero gap %llu to %llu\n", off + read, pos);
ceph_zero_page_vector_range(page_off + read,
ceph_zero_page_vector_range(page_align + read,
pos - off - read, pages);
}
pos += ret;
@ -356,7 +354,7 @@ static int striped_read(struct inode *inode,
left = inode->i_size - pos;
dout("zero tail %d\n", left);
ceph_zero_page_vector_range(page_off + read, left,
ceph_zero_page_vector_range(page_align + read, left,
pages);
read += left;
}
@ -478,9 +476,6 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
else
pos = *offset;
io_align = pos & ~PAGE_MASK;
buf_align = (unsigned long)data & ~PAGE_MASK;
ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + left);
if (ret < 0)
return ret;
@ -504,6 +499,8 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
* boundary. this isn't atomic, unfortunately. :(
*/
more:
io_align = pos & ~PAGE_MASK;
buf_align = (unsigned long)data & ~PAGE_MASK;
len = left;
if (file->f_flags & O_DIRECT) {
/* write from beginning of first page, regardless of
@ -593,6 +590,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
pos += len;
written += len;
left -= len;
data += written;
if (left)
goto more;

10
net/ceph/osd_client.c
View File

@ -477,8 +477,9 @@ struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *osdc,
calc_layout(osdc, vino, layout, off, plen, req, ops);
req->r_file_layout = *layout; /* keep a copy */
/* in case it differs from natural alignment that calc_layout
filled in for us */
/* in case it differs from natural (file) alignment that
calc_layout filled in for us */
req->r_num_pages = calc_pages_for(page_align, *plen);
req->r_page_alignment = page_align;
ceph_osdc_build_request(req, off, plen, ops,
@ -2027,8 +2028,9 @@ static struct ceph_msg *get_reply(struct ceph_connection *con,
int want = calc_pages_for(req->r_page_alignment, data_len);
if (unlikely(req->r_num_pages < want)) {
pr_warning("tid %lld reply %d > expected %d pages\n",
tid, want, m->nr_pages);
pr_warning("tid %lld reply has %d bytes %d pages, we"
" had only %d pages ready\n", tid, data_len,
want, req->r_num_pages);
*skip = 1;
ceph_msg_put(m);
m = NULL;