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authorLinus Torvalds <torvalds@linux-foundation.org>2013-05-06 13:11:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-05-06 13:11:19 -0700
commit91f8575685e35f3bd021286bc82d26397458f5a9 (patch)
tree09de8d889758a12071adb9427ed741e27c907aa6 /fs
parent2e378f3eebd28feefbb1f9953834a5a19482f053 (diff)
parentb5b09be30cf99f9c699e825629f02e3bce555d44 (diff)
downloadop-kernel-dev-91f8575685e35f3bd021286bc82d26397458f5a9.zip
op-kernel-dev-91f8575685e35f3bd021286bc82d26397458f5a9.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
Pull Ceph changes from Alex Elder: "This is a big pull. Most of it is culmination of Alex's work to implement RBD image layering, which is now complete (yay!). There is also some work from Yan to fix i_mutex behavior surrounding writes in cephfs, a sync write fix, a fix for RBD images that get resized while they are mapped, and a few patches from me that resolve annoying auth warnings and fix several bugs in the ceph auth code." * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (254 commits) rbd: fix image request leak on parent read libceph: use slab cache for osd client requests libceph: allocate ceph message data with a slab allocator libceph: allocate ceph messages with a slab allocator rbd: allocate image object names with a slab allocator rbd: allocate object requests with a slab allocator rbd: allocate name separate from obj_request rbd: allocate image requests with a slab allocator rbd: use binary search for snapshot lookup rbd: clear EXISTS flag if mapped snapshot disappears rbd: kill off the snapshot list rbd: define rbd_snap_size() and rbd_snap_features() rbd: use snap_id not index to look up snap info rbd: look up snapshot name in names buffer rbd: drop obj_request->version rbd: drop rbd_obj_method_sync() version parameter rbd: more version parameter removal rbd: get rid of some version parameters rbd: stop tracking header object version rbd: snap names are pointer to constant data ...
Diffstat (limited to 'fs')
-rw-r--r--fs/ceph/addr.c222
-rw-r--r--fs/ceph/caps.c33
-rw-r--r--fs/ceph/dir.c65
-rw-r--r--fs/ceph/file.c241
-rw-r--r--fs/ceph/inode.c59
-rw-r--r--fs/ceph/ioctl.c5
-rw-r--r--fs/ceph/mds_client.c79
-rw-r--r--fs/ceph/mdsmap.c8
-rw-r--r--fs/ceph/snap.c3
-rw-r--r--fs/ceph/super.c7
-rw-r--r--fs/ceph/super.h65
11 files changed, 398 insertions, 389 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index a60ea97..3e68ac1 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -236,15 +236,21 @@ static int ceph_readpage(struct file *filp, struct page *page)
static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)
{
struct inode *inode = req->r_inode;
+ struct ceph_osd_data *osd_data;
int rc = req->r_result;
int bytes = le32_to_cpu(msg->hdr.data_len);
+ int num_pages;
int i;
dout("finish_read %p req %p rc %d bytes %d\n", inode, req, rc, bytes);
/* unlock all pages, zeroing any data we didn't read */
- for (i = 0; i < req->r_num_pages; i++, bytes -= PAGE_CACHE_SIZE) {
- struct page *page = req->r_pages[i];
+ osd_data = osd_req_op_extent_osd_data(req, 0);
+ BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);
+ num_pages = calc_pages_for((u64)osd_data->alignment,
+ (u64)osd_data->length);
+ for (i = 0; i < num_pages; i++) {
+ struct page *page = osd_data->pages[i];
if (bytes < (int)PAGE_CACHE_SIZE) {
/* zero (remainder of) page */
@@ -257,8 +263,9 @@ static void finish_read(struct ceph_osd_request *req, struct ceph_msg *msg)
SetPageUptodate(page);
unlock_page(page);
page_cache_release(page);
+ bytes -= PAGE_CACHE_SIZE;
}
- kfree(req->r_pages);
+ kfree(osd_data->pages);
}
static void ceph_unlock_page_vector(struct page **pages, int num_pages)
@@ -279,6 +286,7 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
&ceph_inode_to_client(inode)->client->osdc;
struct ceph_inode_info *ci = ceph_inode(inode);
struct page *page = list_entry(page_list->prev, struct page, lru);
+ struct ceph_vino vino;
struct ceph_osd_request *req;
u64 off;
u64 len;
@@ -303,18 +311,17 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
len = nr_pages << PAGE_CACHE_SHIFT;
dout("start_read %p nr_pages %d is %lld~%lld\n", inode, nr_pages,
off, len);
-
- req = ceph_osdc_new_request(osdc, &ci->i_layout, ceph_vino(inode),
- off, &len,
- CEPH_OSD_OP_READ, CEPH_OSD_FLAG_READ,
- NULL, 0,
+ vino = ceph_vino(inode);
+ req = ceph_osdc_new_request(osdc, &ci->i_layout, vino, off, &len,
+ 1, CEPH_OSD_OP_READ,
+ CEPH_OSD_FLAG_READ, NULL,
ci->i_truncate_seq, ci->i_truncate_size,
- NULL, false, 0);
+ false);
if (IS_ERR(req))
return PTR_ERR(req);
/* build page vector */
- nr_pages = len >> PAGE_CACHE_SHIFT;
+ nr_pages = calc_pages_for(0, len);
pages = kmalloc(sizeof(*pages) * nr_pages, GFP_NOFS);
ret = -ENOMEM;
if (!pages)
@@ -336,11 +343,12 @@ static int start_read(struct inode *inode, struct list_head *page_list, int max)
}
pages[i] = page;
}
- req->r_pages = pages;
- req->r_num_pages = nr_pages;
+ osd_req_op_extent_osd_data_pages(req, 0, pages, len, 0, false, false);
req->r_callback = finish_read;
req->r_inode = inode;
+ ceph_osdc_build_request(req, off, NULL, vino.snap, NULL);
+
dout("start_read %p starting %p %lld~%lld\n", inode, req, off, len);
ret = ceph_osdc_start_request(osdc, req, false);
if (ret < 0)
@@ -373,7 +381,8 @@ static int ceph_readpages(struct file *file, struct address_space *mapping,
max = (fsc->mount_options->rsize + PAGE_CACHE_SIZE - 1)
>> PAGE_SHIFT;
- dout("readpages %p file %p nr_pages %d max %d\n", inode, file, nr_pages,
+ dout("readpages %p file %p nr_pages %d max %d\n", inode,
+ file, nr_pages,
max);
while (!list_empty(page_list)) {
rc = start_read(inode, page_list, max);
@@ -548,17 +557,23 @@ static void writepages_finish(struct ceph_osd_request *req,
{
struct inode *inode = req->r_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
+ struct ceph_osd_data *osd_data;
unsigned wrote;
struct page *page;
+ int num_pages;
int i;
struct ceph_snap_context *snapc = req->r_snapc;
struct address_space *mapping = inode->i_mapping;
int rc = req->r_result;
- u64 bytes = le64_to_cpu(req->r_request_ops[0].extent.length);
+ u64 bytes = req->r_ops[0].extent.length;
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
long writeback_stat;
unsigned issued = ceph_caps_issued(ci);
+ osd_data = osd_req_op_extent_osd_data(req, 0);
+ BUG_ON(osd_data->type != CEPH_OSD_DATA_TYPE_PAGES);
+ num_pages = calc_pages_for((u64)osd_data->alignment,
+ (u64)osd_data->length);
if (rc >= 0) {
/*
* Assume we wrote the pages we originally sent. The
@@ -566,7 +581,7 @@ static void writepages_finish(struct ceph_osd_request *req,
* raced with a truncation and was adjusted at the osd,
* so don't believe the reply.
*/
- wrote = req->r_num_pages;
+ wrote = num_pages;
} else {
wrote = 0;
mapping_set_error(mapping, rc);
@@ -575,8 +590,8 @@ static void writepages_finish(struct ceph_osd_request *req,
inode, rc, bytes, wrote);
/* clean all pages */
- for (i = 0; i < req->r_num_pages; i++) {
- page = req->r_pages[i];
+ for (i = 0; i < num_pages; i++) {
+ page = osd_data->pages[i];
BUG_ON(!page);
WARN_ON(!PageUptodate(page));
@@ -605,32 +620,34 @@ static void writepages_finish(struct ceph_osd_request *req,
unlock_page(page);
}
dout("%p wrote+cleaned %d pages\n", inode, wrote);
- ceph_put_wrbuffer_cap_refs(ci, req->r_num_pages, snapc);
+ ceph_put_wrbuffer_cap_refs(ci, num_pages, snapc);
- ceph_release_pages(req->r_pages, req->r_num_pages);
- if (req->r_pages_from_pool)
- mempool_free(req->r_pages,
+ ceph_release_pages(osd_data->pages, num_pages);
+ if (osd_data->pages_from_pool)
+ mempool_free(osd_data->pages,
ceph_sb_to_client(inode->i_sb)->wb_pagevec_pool);
else
- kfree(req->r_pages);
+ kfree(osd_data->pages);
ceph_osdc_put_request(req);
}
-/*
- * allocate a page vec, either directly, or if necessary, via a the
- * mempool. we avoid the mempool if we can because req->r_num_pages
- * may be less than the maximum write size.
- */
-static void alloc_page_vec(struct ceph_fs_client *fsc,
- struct ceph_osd_request *req)
+static struct ceph_osd_request *
+ceph_writepages_osd_request(struct inode *inode, u64 offset, u64 *len,
+ struct ceph_snap_context *snapc, int num_ops)
{
- req->r_pages = kmalloc(sizeof(struct page *) * req->r_num_pages,
- GFP_NOFS);
- if (!req->r_pages) {
- req->r_pages = mempool_alloc(fsc->wb_pagevec_pool, GFP_NOFS);
- req->r_pages_from_pool = 1;
- WARN_ON(!req->r_pages);
- }
+ struct ceph_fs_client *fsc;
+ struct ceph_inode_info *ci;
+ struct ceph_vino vino;
+
+ fsc = ceph_inode_to_client(inode);
+ ci = ceph_inode(inode);
+ vino = ceph_vino(inode);
+ /* BUG_ON(vino.snap != CEPH_NOSNAP); */
+
+ return ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout,
+ vino, offset, len, num_ops, CEPH_OSD_OP_WRITE,
+ CEPH_OSD_FLAG_WRITE|CEPH_OSD_FLAG_ONDISK,
+ snapc, ci->i_truncate_seq, ci->i_truncate_size, true);
}
/*
@@ -653,7 +670,7 @@ static int ceph_writepages_start(struct address_space *mapping,
unsigned wsize = 1 << inode->i_blkbits;
struct ceph_osd_request *req = NULL;
int do_sync;
- u64 snap_size = 0;
+ u64 snap_size;
/*
* Include a 'sync' in the OSD request if this is a data
@@ -699,6 +716,7 @@ static int ceph_writepages_start(struct address_space *mapping,
retry:
/* find oldest snap context with dirty data */
ceph_put_snap_context(snapc);
+ snap_size = 0;
snapc = get_oldest_context(inode, &snap_size);
if (!snapc) {
/* hmm, why does writepages get called when there
@@ -706,6 +724,8 @@ retry:
dout(" no snap context with dirty data?\n");
goto out;
}
+ if (snap_size == 0)
+ snap_size = i_size_read(inode);
dout(" oldest snapc is %p seq %lld (%d snaps)\n",
snapc, snapc->seq, snapc->num_snaps);
if (last_snapc && snapc != last_snapc) {
@@ -718,10 +738,14 @@ retry:
last_snapc = snapc;
while (!done && index <= end) {
+ int num_ops = do_sync ? 2 : 1;
+ struct ceph_vino vino;
unsigned i;
int first;
pgoff_t next;
int pvec_pages, locked_pages;
+ struct page **pages = NULL;
+ mempool_t *pool = NULL; /* Becomes non-null if mempool used */
struct page *page;
int want;
u64 offset, len;
@@ -773,11 +797,8 @@ get_more_pages:
dout("waiting on writeback %p\n", page);
wait_on_page_writeback(page);
}
- if ((snap_size && page_offset(page) > snap_size) ||
- (!snap_size &&
- page_offset(page) > i_size_read(inode))) {
- dout("%p page eof %llu\n", page, snap_size ?
- snap_size : i_size_read(inode));
+ if (page_offset(page) >= snap_size) {
+ dout("%p page eof %llu\n", page, snap_size);
done = 1;
unlock_page(page);
break;
@@ -805,22 +826,23 @@ get_more_pages:
break;
}
- /* ok */
+ /*
+ * We have something to write. If this is
+ * the first locked page this time through,
+ * allocate an osd request and a page array
+ * that it will use.
+ */
if (locked_pages == 0) {
+ size_t size;
+
+ BUG_ON(pages);
+
/* prepare async write request */
- offset = (u64) page_offset(page);
+ offset = (u64)page_offset(page);
len = wsize;
- req = ceph_osdc_new_request(&fsc->client->osdc,
- &ci->i_layout,
- ceph_vino(inode),
- offset, &len,
- CEPH_OSD_OP_WRITE,
- CEPH_OSD_FLAG_WRITE |
- CEPH_OSD_FLAG_ONDISK,
- snapc, do_sync,
- ci->i_truncate_seq,
- ci->i_truncate_size,
- &inode->i_mtime, true, 0);
+ req = ceph_writepages_osd_request(inode,
+ offset, &len, snapc,
+ num_ops);
if (IS_ERR(req)) {
rc = PTR_ERR(req);
@@ -828,11 +850,17 @@ get_more_pages:
break;
}
- max_pages = req->r_num_pages;
-
- alloc_page_vec(fsc, req);
req->r_callback = writepages_finish;
req->r_inode = inode;
+
+ max_pages = calc_pages_for(0, (u64)len);
+ size = max_pages * sizeof (*pages);
+ pages = kmalloc(size, GFP_NOFS);
+ if (!pages) {
+ pool = fsc->wb_pagevec_pool;
+ pages = mempool_alloc(pool, GFP_NOFS);
+ BUG_ON(!pages);
+ }
}
/* note position of first page in pvec */
@@ -850,7 +878,7 @@ get_more_pages:
}
set_page_writeback(page);
- req->r_pages[locked_pages] = page;
+ pages[locked_pages] = page;
locked_pages++;
next = page->index + 1;
}
@@ -879,18 +907,27 @@ get_more_pages:
pvec.nr -= i-first;
}
- /* submit the write */
- offset = req->r_pages[0]->index << PAGE_CACHE_SHIFT;
- len = min((snap_size ? snap_size : i_size_read(inode)) - offset,
+ /* Format the osd request message and submit the write */
+
+ offset = page_offset(pages[0]);
+ len = min(snap_size - offset,
(u64)locked_pages << PAGE_CACHE_SHIFT);
dout("writepages got %d pages at %llu~%llu\n",
locked_pages, offset, len);
- /* revise final length, page count */
- req->r_num_pages = locked_pages;
- req->r_request_ops[0].extent.length = cpu_to_le64(len);
- req->r_request_ops[0].payload_len = cpu_to_le32(len);
- req->r_request->hdr.data_len = cpu_to_le32(len);
+ osd_req_op_extent_osd_data_pages(req, 0, pages, len, 0,
+ !!pool, false);
+
+ pages = NULL; /* request message now owns the pages array */
+ pool = NULL;
+
+ /* Update the write op length in case we changed it */
+
+ osd_req_op_extent_update(req, 0, len);
+
+ vino = ceph_vino(inode);
+ ceph_osdc_build_request(req, offset, snapc, vino.snap,
+ &inode->i_mtime);
rc = ceph_osdc_start_request(&fsc->client->osdc, req, true);
BUG_ON(rc);
@@ -1067,51 +1104,23 @@ static int ceph_write_begin(struct file *file, struct address_space *mapping,
struct page **pagep, void **fsdata)
{
struct inode *inode = file_inode(file);
- struct ceph_inode_info *ci = ceph_inode(inode);
- struct ceph_file_info *fi = file->private_data;
struct page *page;
pgoff_t index = pos >> PAGE_CACHE_SHIFT;
- int r, want, got = 0;
-
- if (fi->fmode & CEPH_FILE_MODE_LAZY)
- want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO;
- else
- want = CEPH_CAP_FILE_BUFFER;
-
- dout("write_begin %p %llx.%llx %llu~%u getting caps. i_size %llu\n",
- inode, ceph_vinop(inode), pos, len, inode->i_size);
- r = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, &got, pos+len);
- if (r < 0)
- return r;
- dout("write_begin %p %llx.%llx %llu~%u got cap refs on %s\n",
- inode, ceph_vinop(inode), pos, len, ceph_cap_string(got));
- if (!(got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO))) {
- ceph_put_cap_refs(ci, got);
- return -EAGAIN;
- }
+ int r;
do {
/* get a page */
page = grab_cache_page_write_begin(mapping, index, 0);
- if (!page) {
- r = -ENOMEM;
- break;
- }
+ if (!page)
+ return -ENOMEM;
+ *pagep = page;
dout("write_begin file %p inode %p page %p %d~%d\n", file,
inode, page, (int)pos, (int)len);
r = ceph_update_writeable_page(file, pos, len, page);
- if (r)
- page_cache_release(page);
} while (r == -EAGAIN);
- if (r) {
- ceph_put_cap_refs(ci, got);
- } else {
- *pagep = page;
- *(int *)fsdata = got;
- }
return r;
}
@@ -1125,12 +1134,10 @@ static int ceph_write_end(struct file *file, struct address_space *mapping,
struct page *page, void *fsdata)
{
struct inode *inode = file_inode(file);
- struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
struct ceph_mds_client *mdsc = fsc->mdsc;
unsigned from = pos & (PAGE_CACHE_SIZE - 1);
int check_cap = 0;
- int got = (unsigned long)fsdata;
dout("write_end file %p inode %p page %p %d~%d (%d)\n", file,
inode, page, (int)pos, (int)copied, (int)len);
@@ -1153,19 +1160,6 @@ static int ceph_write_end(struct file *file, struct address_space *mapping,
up_read(&mdsc->snap_rwsem);
page_cache_release(page);
- if (copied > 0) {
- int dirty;
- spin_lock(&ci->i_ceph_lock);
- dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR);
- spin_unlock(&ci->i_ceph_lock);
- if (dirty)
- __mark_inode_dirty(inode, dirty);
- }
-
- dout("write_end %p %llx.%llx %llu~%u dropping cap refs on %s\n",
- inode, ceph_vinop(inode), pos, len, ceph_cap_string(got));
- ceph_put_cap_refs(ci, got);
-
if (check_cap)
ceph_check_caps(ceph_inode(inode), CHECK_CAPS_AUTHONLY, NULL);
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 78e2f57..da0f9b8 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -490,15 +490,17 @@ static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap,
ci->i_rdcache_gen++;
/*
- * if we are newly issued FILE_SHARED, clear D_COMPLETE; we
+ * if we are newly issued FILE_SHARED, mark dir not complete; we
* don't know what happened to this directory while we didn't
* have the cap.
*/
if ((issued & CEPH_CAP_FILE_SHARED) &&
(had & CEPH_CAP_FILE_SHARED) == 0) {
ci->i_shared_gen++;
- if (S_ISDIR(ci->vfs_inode.i_mode))
- ceph_dir_clear_complete(&ci->vfs_inode);
+ if (S_ISDIR(ci->vfs_inode.i_mode)) {
+ dout(" marking %p NOT complete\n", &ci->vfs_inode);
+ __ceph_dir_clear_complete(ci);
+ }
}
}
@@ -553,6 +555,7 @@ retry:
cap->implemented = 0;
cap->mds = mds;
cap->mds_wanted = 0;
+ cap->mseq = 0;
cap->ci = ci;
__insert_cap_node(ci, cap);
@@ -628,7 +631,10 @@ retry:
cap->cap_id = cap_id;
cap->issued = issued;
cap->implemented |= issued;
- cap->mds_wanted |= wanted;
+ if (mseq > cap->mseq)
+ cap->mds_wanted = wanted;
+ else
+ cap->mds_wanted |= wanted;
cap->seq = seq;
cap->issue_seq = seq;
cap->mseq = mseq;
@@ -997,9 +1003,9 @@ static int send_cap_msg(struct ceph_mds_session *session,
return 0;
}
-static void __queue_cap_release(struct ceph_mds_session *session,
- u64 ino, u64 cap_id, u32 migrate_seq,
- u32 issue_seq)
+void __queue_cap_release(struct ceph_mds_session *session,
+ u64 ino, u64 cap_id, u32 migrate_seq,
+ u32 issue_seq)
{
struct ceph_msg *msg;
struct ceph_mds_cap_release *head;
@@ -2046,6 +2052,13 @@ static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
goto out;
}
+ /* finish pending truncate */
+ while (ci->i_truncate_pending) {
+ spin_unlock(&ci->i_ceph_lock);
+ __ceph_do_pending_vmtruncate(inode, !(need & CEPH_CAP_FILE_WR));
+ spin_lock(&ci->i_ceph_lock);
+ }
+
if (need & CEPH_CAP_FILE_WR) {
if (endoff >= 0 && endoff > (loff_t)ci->i_max_size) {
dout("get_cap_refs %p endoff %llu > maxsize %llu\n",
@@ -2067,12 +2080,6 @@ static int try_get_cap_refs(struct ceph_inode_info *ci, int need, int want,
}
have = __ceph_caps_issued(ci, &implemented);
- /*
- * disallow writes while a truncate is pending
- */
- if (ci->i_truncate_pending)
- have &= ~CEPH_CAP_FILE_WR;
-
if ((have & need) == need) {
/*
* Look at (implemented & ~have & not) so that we keep waiting
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 6d797f4..f02d82b 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -107,7 +107,7 @@ static unsigned fpos_off(loff_t p)
* falling back to a "normal" sync readdir if any dentries in the dir
* are dropped.
*
- * D_COMPLETE tells indicates we have all dentries in the dir. It is
+ * Complete dir indicates that we have all dentries in the dir. It is
* defined IFF we hold CEPH_CAP_FILE_SHARED (which will be revoked by
* the MDS if/when the directory is modified).
*/
@@ -198,8 +198,8 @@ more:
filp->f_pos++;
/* make sure a dentry wasn't dropped while we didn't have parent lock */
- if (!ceph_dir_test_complete(dir)) {
- dout(" lost D_COMPLETE on %p; falling back to mds\n", dir);
+ if (!ceph_dir_is_complete(dir)) {
+ dout(" lost dir complete on %p; falling back to mds\n", dir);
err = -EAGAIN;
goto out;
}
@@ -258,7 +258,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
if (filp->f_pos == 0) {
/* note dir version at start of readdir so we can tell
* if any dentries get dropped */
- fi->dir_release_count = ci->i_release_count;
+ fi->dir_release_count = atomic_read(&ci->i_release_count);
dout("readdir off 0 -> '.'\n");
if (filldir(dirent, ".", 1, ceph_make_fpos(0, 0),
@@ -284,7 +284,7 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
if ((filp->f_pos == 2 || fi->dentry) &&
!ceph_test_mount_opt(fsc, NOASYNCREADDIR) &&
ceph_snap(inode) != CEPH_SNAPDIR &&
- ceph_dir_test_complete(inode) &&
+ __ceph_dir_is_complete(ci) &&
__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1)) {
spin_unlock(&ci->i_ceph_lock);
err = __dcache_readdir(filp, dirent, filldir);
@@ -350,7 +350,8 @@ more:
if (!req->r_did_prepopulate) {
dout("readdir !did_prepopulate");
- fi->dir_release_count--; /* preclude D_COMPLETE */
+ /* preclude from marking dir complete */
+ fi->dir_release_count--;
}
/* note next offset and last dentry name */
@@ -428,8 +429,9 @@ more:
* the complete dir contents in our cache.
*/
spin_lock(&ci->i_ceph_lock);
- if (ci->i_release_count == fi->dir_release_count) {
- ceph_dir_set_complete(inode);
+ if (atomic_read(&ci->i_release_count) == fi->dir_release_count) {
+ dout(" marking %p complete\n", inode);
+ __ceph_dir_set_complete(ci, fi->dir_release_count);
ci->i_max_offset = filp->f_pos;
}
spin_unlock(&ci->i_ceph_lock);
@@ -604,7 +606,7 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
fsc->mount_options->snapdir_name,
dentry->d_name.len) &&
!is_root_ceph_dentry(dir, dentry) &&
- ceph_dir_test_complete(dir) &&
+ __ceph_dir_is_complete(ci) &&
(__ceph_caps_issued_mask(ci, CEPH_CAP_FILE_SHARED, 1))) {
spin_unlock(&ci->i_ceph_lock);
dout(" dir %p complete, -ENOENT\n", dir);
@@ -1065,44 +1067,6 @@ static int ceph_snapdir_d_revalidate(struct dentry *dentry,
}
/*
- * Set/clear/test dir complete flag on the dir's dentry.
- */
-void ceph_dir_set_complete(struct inode *inode)
-{
- struct dentry *dentry = d_find_any_alias(inode);
-
- if (dentry && ceph_dentry(dentry) &&
- ceph_test_mount_opt(ceph_sb_to_client(dentry->d_sb), DCACHE)) {
- dout(" marking %p (%p) complete\n", inode, dentry);
- set_bit(CEPH_D_COMPLETE, &ceph_dentry(dentry)->flags);
- }
- dput(dentry);
-}
-
-void ceph_dir_clear_complete(struct inode *inode)
-{
- struct dentry *dentry = d_find_any_alias(inode);
-
- if (dentry && ceph_dentry(dentry)) {
- dout(" marking %p (%p) complete\n", inode, dentry);
- set_bit(CEPH_D_COMPLETE, &ceph_dentry(dentry)->flags);
- }
- dput(dentry);
-}
-
-bool ceph_dir_test_complete(struct inode *inode)
-{
- struct dentry *dentry = d_find_any_alias(inode);
-
- if (dentry && ceph_dentry(dentry)) {
- dout(" marking %p (%p) NOT complete\n", inode, dentry);
- clear_bit(CEPH_D_COMPLETE, &ceph_dentry(dentry)->flags);
- }
- dput(dentry);
- return false;
-}
-
-/*
* When the VFS prunes a dentry from the cache, we need to clear the
* complete flag on the parent directory.
*
@@ -1110,15 +1074,13 @@ bool ceph_dir_test_complete(struct inode *inode)
*/
static void ceph_d_prune(struct dentry *dentry)
{
- struct ceph_dentry_info *di;
-
dout("ceph_d_prune %p\n", dentry);
/* do we have a valid parent? */
if (IS_ROOT(dentry))
return;
- /* if we are not hashed, we don't affect D_COMPLETE */
+ /* if we are not hashed, we don't affect dir's completeness */
if (d_unhashed(dentry))
return;
@@ -1126,8 +1088,7 @@ static void ceph_d_prune(struct dentry *dentry)
* we hold d_lock, so d_parent is stable, and d_fsdata is never
* cleared until d_release
*/
- di = ceph_dentry(dentry->d_parent);
- clear_bit(CEPH_D_COMPLETE, &di->flags);
+ ceph_dir_clear_complete(dentry->d_parent->d_inode);
}
/*
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index bf338d9..d70830c 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -446,19 +446,35 @@ done:
}
/*
- * Write commit callback, called if we requested both an ACK and
- * ONDISK commit reply from the OSD.
+ * Write commit request unsafe callback, called to tell us when a
+ * request is unsafe (that is, in flight--has been handed to the
+ * messenger to send to its target osd). It is called again when
+ * we've received a response message indicating the request is
+ * "safe" (its CEPH_OSD_FLAG_ONDISK flag is set), or when a request
+ * is completed early (and unsuccessfully) due to a timeout or
+ * interrupt.
+ *
+ * This is used if we requested both an ACK and ONDISK commit reply
+ * from the OSD.
*/
-static void sync_write_commit(struct ceph_osd_request *req,
- struct ceph_msg *msg)
+static void ceph_sync_write_unsafe(struct ceph_osd_request *req, bool unsafe)
{
struct ceph_inode_info *ci = ceph_inode(req->r_inode);
- dout("sync_write_commit %p tid %llu\n", req, req->r_tid);
- spin_lock(&ci->i_unsafe_lock);
- list_del_init(&req->r_unsafe_item);
- spin_unlock(&ci->i_unsafe_lock);
- ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
+ dout("%s %p tid %llu %ssafe\n", __func__, req, req->r_tid,
+ unsafe ? "un" : "");
+ if (unsafe) {
+ ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
+ spin_lock(&ci->i_unsafe_lock);
+ list_add_tail(&req->r_unsafe_item,
+ &ci->i_unsafe_writes);
+ spin_unlock(&ci->i_unsafe_lock);
+ } else {
+ spin_lock(&ci->i_unsafe_lock);
+ list_del_init(&req->r_unsafe_item);
+ spin_unlock(&ci->i_unsafe_lock);
+ ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
+ }
}
/*
@@ -470,36 +486,33 @@ static void sync_write_commit(struct ceph_osd_request *req,
* objects, rollback on failure, etc.)
*/
static ssize_t ceph_sync_write(struct file *file, const char __user *data,
- size_t left, loff_t *offset)
+ size_t left, loff_t pos, loff_t *ppos)
{
struct inode *inode = file_inode(file);
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_fs_client *fsc = ceph_inode_to_client(inode);
+ struct ceph_snap_context *snapc;
+ struct ceph_vino vino;
struct ceph_osd_request *req;
+ int num_ops = 1;
struct page **pages;
int num_pages;
- long long unsigned pos;
u64 len;
int written = 0;
int flags;
- int do_sync = 0;
int check_caps = 0;
int page_align, io_align;
unsigned long buf_align;
int ret;
struct timespec mtime = CURRENT_TIME;
+ bool own_pages = false;
if (ceph_snap(file_inode(file)) != CEPH_NOSNAP)
return -EROFS;
- dout("sync_write on file %p %lld~%u %s\n", file, *offset,
+ dout("sync_write on file %p %lld~%u %s\n", file, pos,
(unsigned)left, (file->f_flags & O_DIRECT) ? "O_DIRECT" : "");
- if (file->f_flags & O_APPEND)
- pos = i_size_read(inode);
- else
- pos = *offset;
-
ret = filemap_write_and_wait_range(inode->i_mapping, pos, pos + left);
if (ret < 0)
return ret;
@@ -516,7 +529,7 @@ static ssize_t ceph_sync_write(struct file *file, const char __user *data,
if ((file->f_flags & (O_SYNC|O_DIRECT)) == 0)
flags |= CEPH_OSD_FLAG_ACK;
else
- do_sync = 1;
+ num_ops++; /* Also include a 'startsync' command. */
/*
* we may need to do multiple writes here if we span an object
@@ -526,25 +539,20 @@ 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
- io alignment */
- page_align = (pos - io_align + buf_align) & ~PAGE_MASK;
- num_pages = calc_pages_for((unsigned long)data, len);
- } else {
- page_align = pos & ~PAGE_MASK;
- num_pages = calc_pages_for(pos, len);
- }
+
+ snapc = ci->i_snap_realm->cached_context;
+ vino = ceph_vino(inode);
req = ceph_osdc_new_request(&fsc->client->osdc, &ci->i_layout,
- ceph_vino(inode), pos, &len,
- CEPH_OSD_OP_WRITE, flags,
- ci->i_snap_realm->cached_context,
- do_sync,
+ vino, pos, &len, num_ops,
+ CEPH_OSD_OP_WRITE, flags, snapc,
ci->i_truncate_seq, ci->i_truncate_size,
- &mtime, false, page_align);
+ false);
if (IS_ERR(req))
return PTR_ERR(req);
+ /* write from beginning of first page, regardless of io alignment */
+ page_align = file->f_flags & O_DIRECT ? buf_align : io_align;
+ num_pages = calc_pages_for(page_align, len);
if (file->f_flags & O_DIRECT) {
pages = ceph_get_direct_page_vector(data, num_pages, false);
if (IS_ERR(pages)) {
@@ -572,36 +580,20 @@ more:
if ((file->f_flags & O_SYNC) == 0) {
/* get a second commit callback */
- req->r_safe_callback = sync_write_commit;
- req->r_own_pages = 1;
+ req->r_unsafe_callback = ceph_sync_write_unsafe;
+ req->r_inode = inode;
+ own_pages = true;
}
}
- req->r_pages = pages;
- req->r_num_pages = num_pages;
- req->r_inode = inode;
+ osd_req_op_extent_osd_data_pages(req, 0, pages, len, page_align,
+ false, own_pages);
+
+ /* BUG_ON(vino.snap != CEPH_NOSNAP); */
+ ceph_osdc_build_request(req, pos, snapc, vino.snap, &mtime);
ret = ceph_osdc_start_request(&fsc->client->osdc, req, false);
- if (!ret) {
- if (req->r_safe_callback) {
- /*
- * Add to inode unsafe list only after we
- * start_request so that a tid has been assigned.
- */
- spin_lock(&ci->i_unsafe_lock);
- list_add_tail(&req->r_unsafe_item,
- &ci->i_unsafe_writes);
- spin_unlock(&ci->i_unsafe_lock);
- ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
- }
-
+ if (!ret)
ret = ceph_osdc_wait_request(&fsc->client->osdc, req);
- if (ret < 0 && req->r_safe_callback) {
- spin_lock(&ci->i_unsafe_lock);
- list_del_init(&req->r_unsafe_item);
- spin_unlock(&ci->i_unsafe_lock);
- ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
- }
- }
if (file->f_flags & O_DIRECT)
ceph_put_page_vector(pages, num_pages, false);
@@ -614,12 +606,12 @@ out:
pos += len;
written += len;
left -= len;
- data += written;
+ data += len;
if (left)
goto more;
ret = written;
- *offset = pos;
+ *ppos = pos;
if (pos > i_size_read(inode))
check_caps = ceph_inode_set_size(inode, pos);
if (check_caps)
@@ -653,7 +645,6 @@ static ssize_t ceph_aio_read(struct kiocb *iocb, const struct iovec *iov,
dout("aio_read %p %llx.%llx %llu~%u trying to get caps on %p\n",
inode, ceph_vinop(inode), pos, (unsigned)len, inode);
again:
- __ceph_do_pending_vmtruncate(inode);
if (fi->fmode & CEPH_FILE_MODE_LAZY)
want = CEPH_CAP_FILE_CACHE | CEPH_CAP_FILE_LAZYIO;
else
@@ -717,55 +708,75 @@ static ssize_t ceph_aio_write(struct kiocb *iocb, const struct iovec *iov,
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_osd_client *osdc =
&ceph_sb_to_client(inode->i_sb)->client->osdc;
- loff_t endoff = pos + iov->iov_len;
- int got = 0;
- int ret, err, written;
+ ssize_t count, written = 0;
+ int err, want, got;
+ bool hold_mutex;
if (ceph_snap(inode) != CEPH_NOSNAP)
return -EROFS;
-retry_snap:
- written = 0;
- if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL))
- return -ENOSPC;
- __ceph_do_pending_vmtruncate(inode);
+ sb_start_write(inode->i_sb);
+ mutex_lock(&inode->i_mutex);
+ hold_mutex = true;
- /*
- * try to do a buffered write. if we don't have sufficient
- * caps, we'll get -EAGAIN from generic_file_aio_write, or a
- * short write if we only get caps for some pages.
- */
- if (!(iocb->ki_filp->f_flags & O_DIRECT) &&
- !(inode->i_sb->s_flags & MS_SYNCHRONOUS) &&
- !(fi->flags & CEPH_F_SYNC)) {
- ret = generic_file_aio_write(iocb, iov, nr_segs, pos);
- if (ret >= 0)
- written = ret;
-
- if ((ret >= 0 || ret == -EIOCBQUEUED) &&
- ((file->f_flags & O_SYNC) || IS_SYNC(file->f_mapping->host)
- || ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_NEARFULL))) {
- err = vfs_fsync_range(file, pos, pos + written - 1, 1);
- if (err < 0)
- ret = err;
- }
- if ((ret < 0 && ret != -EAGAIN) || pos + written >= endoff)
- goto out;
+ err = generic_segment_checks(iov, &nr_segs, &count, VERIFY_READ);
+ if (err)
+ goto out;
+
+ /* We can write back this queue in page reclaim */
+ current->backing_dev_info = file->f_mapping->backing_dev_info;
+
+ err = generic_write_checks(file, &pos, &count, S_ISBLK(inode->i_mode));
+ if (err)
+ goto out;
+
+ if (count == 0)
+ goto out;
+
+ err = file_remove_suid(file);
+ if (err)
+ goto out;
+
+ err = file_update_time(file);
+ if (err)
+ goto out;
+
+retry_snap:
+ if (ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_FULL)) {
+ err = -ENOSPC;
+ goto out;
}
- dout("aio_write %p %llx.%llx %llu~%u getting caps. i_size %llu\n",
- inode, ceph_vinop(inode), pos + written,
- (unsigned)iov->iov_len - written, inode->i_size);
- ret = ceph_get_caps(ci, CEPH_CAP_FILE_WR, 0, &got, endoff);
- if (ret < 0)
+ dout("aio_write %p %llx.%llx %llu~%zd getting caps. i_size %llu\n",
+ inode, ceph_vinop(inode), pos, count, inode->i_size);
+ if (fi->fmode & CEPH_FILE_MODE_LAZY)
+ want = CEPH_CAP_FILE_BUFFER | CEPH_CAP_FILE_LAZYIO;
+ else
+ want = CEPH_CAP_FILE_BUFFER;
+ got = 0;
+ err = ceph_get_caps(ci, CEPH_CAP_FILE_WR, want, &got, pos + count);
+ if (err < 0)
goto out;
- dout("aio_write %p %llx.%llx %llu~%u got cap refs on %s\n",
- inode, ceph_vinop(inode), pos + written,
- (unsigned)iov->iov_len - written, ceph_cap_string(got));
- ret = ceph_sync_write(file, iov->iov_base + written,
- iov->iov_len - written, &iocb->ki_pos);
- if (ret >= 0) {
+ dout("aio_write %p %llx.%llx %llu~%zd got cap refs on %s\n",
+ inode, ceph_vinop(inode), pos, count, ceph_cap_string(got));
+
+ if ((got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO)) == 0 ||
+ (iocb->ki_filp->f_flags & O_DIRECT) ||
+ (inode->i_sb->s_flags & MS_SYNCHRONOUS) ||
+ (fi->flags & CEPH_F_SYNC)) {
+ mutex_unlock(&inode->i_mutex);
+ written = ceph_sync_write(file, iov->iov_base, count,
+ pos, &iocb->ki_pos);
+ } else {
+ written = generic_file_buffered_write(iocb, iov, nr_segs,
+ pos, &iocb->ki_pos,
+ count, 0);
+ mutex_unlock(&inode->i_mutex);
+ }
+ hold_mutex = false;
+
+ if (written >= 0) {
int dirty;
spin_lock(&ci->i_ceph_lock);
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_FILE_WR);
@@ -773,18 +784,34 @@ retry_snap:
if (dirty)
__mark_inode_dirty(inode, dirty);
}
+
dout("aio_write %p %llx.%llx %llu~%u dropping cap refs on %s\n",
- inode, ceph_vinop(inode), pos + written,
- (unsigned)iov->iov_len - written, ceph_cap_string(got));
+ inode, ceph_vinop(inode), pos, (unsigned)iov->iov_len,
+ ceph_cap_string(got));
ceph_put_cap_refs(ci, got);
-out:
- if (ret == -EOLDSNAPC) {
+
+ if (written >= 0 &&
+ ((file->f_flags & O_SYNC) || IS_SYNC(file->f_mapping->host) ||
+ ceph_osdmap_flag(osdc->osdmap, CEPH_OSDMAP_NEARFULL))) {
+ err = vfs_fsync_range(file, pos, pos + written - 1, 1);
+ if (err < 0)
+ written = err;
+ }
+
+ if (written == -EOLDSNAPC) {
dout("aio_write %p %llx.%llx %llu~%u got EOLDSNAPC, retrying\n",
inode, ceph_vinop(inode), pos, (unsigned)iov->iov_len);
+ mutex_lock(&inode->i_mutex);
+ hold_mutex = true;
goto retry_snap;
}
+out:
+ if (hold_mutex)
+ mutex_unlock(&inode->i_mutex);
+ sb_end_write(inode->i_sb);
+ current->backing_dev_info = NULL;
- return ret;
+ return written ? written : err;
}
/*
@@ -796,7 +823,7 @@ static loff_t ceph_llseek(struct file *file, loff_t offset, int whence)
int ret;
mutex_lock(&inode->i_mutex);
- __ceph_do_pending_vmtruncate(inode);
+ __ceph_do_pending_vmtruncate(inode, false);
if (whence == SEEK_END || whence == SEEK_DATA || whence == SEEK_HOLE) {
ret = ceph_do_getattr(inode, CEPH_STAT_CAP_SIZE);
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 851814d..be0f7e2 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -302,7 +302,8 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
ci->i_version = 0;
ci->i_time_warp_seq = 0;
ci->i_ceph_flags = 0;
- ci->i_release_count = 0;
+ atomic_set(&ci->i_release_count, 1);
+ atomic_set(&ci->i_complete_count, 0);
ci->i_symlink = NULL;
memset(&ci->i_dir_layout, 0, sizeof(ci->i_dir_layout));
@@ -561,7 +562,6 @@ static int fill_inode(struct inode *inode,
struct ceph_inode_info *ci = ceph_inode(inode);
int i;
int issued = 0, implemented;
- int updating_inode = 0;
struct timespec mtime, atime, ctime;
u32 nsplits;
struct ceph_buffer *xattr_blob = NULL;
@@ -601,7 +601,6 @@ static int fill_inode(struct inode *inode,
(ci->i_version & ~1) >= le64_to_cpu(info->version))
goto no_change;
- updating_inode = 1;
issued = __ceph_caps_issued(ci, &implemented);
issued |= implemented | __ceph_caps_dirty(ci);
@@ -717,6 +716,17 @@ static int fill_inode(struct inode *inode,
ceph_vinop(inode), inode->i_mode);
}
+ /* set dir completion flag? */
+ if (S_ISDIR(inode->i_mode) &&
+ ci->i_files == 0 && ci->i_subdirs == 0 &&
+ ceph_snap(inode) == CEPH_NOSNAP &&
+ (le32_to_cpu(info->cap.caps) & CEPH_CAP_FILE_SHARED) &&
+ (issued & CEPH_CAP_FILE_EXCL) == 0 &&
+ !__ceph_dir_is_complete(ci)) {
+ dout(" marking %p complete (empty)\n", inode);
+ __ceph_dir_set_complete(ci, atomic_read(&ci->i_release_count));
+ ci->i_max_offset = 2;
+ }
no_change:
spin_unlock(&ci->i_ceph_lock);
@@ -767,19 +777,6 @@ no_change:
__ceph_get_fmode(ci, cap_fmode);
}
- /* set dir completion flag? */
- if (S_ISDIR(inode->i_mode) &&
- updating_inode && /* didn't jump to no_change */
- ci->i_files == 0 && ci->i_subdirs == 0 &&
- ceph_snap(inode) == CEPH_NOSNAP &&
- (le32_to_cpu(info->cap.caps) & CEPH_CAP_FILE_SHARED) &&
- (issued & CEPH_CAP_FILE_EXCL) == 0 &&
- !ceph_dir_test_complete(inode)) {
- dout(" marking %p complete (empty)\n", inode);
- ceph_dir_set_complete(inode);
- ci->i_max_offset = 2;
- }
-
/* update delegation info? */
if (dirinfo)
ceph_fill_dirfrag(inode, dirinfo);
@@ -861,7 +858,7 @@ static void ceph_set_dentry_offset(struct dentry *dn)
di = ceph_dentry(dn);
spin_lock(&ci->i_ceph_lock);
- if (!ceph_dir_test_complete(inode)) {
+ if (!__ceph_dir_is_complete(ci)) {
spin_unlock(&ci->i_ceph_lock);
return;
}
@@ -1065,8 +1062,8 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
/*
* d_move() puts the renamed dentry at the end of
* d_subdirs. We need to assign it an appropriate
- * directory offset so we can behave when holding
- * D_COMPLETE.
+ * directory offset so we can behave when dir is
+ * complete.
*/
ceph_set_dentry_offset(req->r_old_dentry);
dout("dn %p gets new offset %lld\n", req->r_old_dentry,
@@ -1457,7 +1454,7 @@ out:
/*
- * called by trunc_wq; take i_mutex ourselves
+ * called by trunc_wq;
*
* We also truncate in a separate thread as well.
*/
@@ -1468,9 +1465,7 @@ static void ceph_vmtruncate_work(struct work_struct *work)
struct inode *inode = &ci->vfs_inode;
dout("vmtruncate_work %p\n", inode);
- mutex_lock(&inode->i_mutex);
- __ceph_do_pending_vmtruncate(inode);
- mutex_unlock(&inode->i_mutex);
+ __ceph_do_pending_vmtruncate(inode, true);
iput(inode);
}
@@ -1494,12 +1489,10 @@ void ceph_queue_vmtruncate(struct inode *inode)
}
/*
- * called with i_mutex held.
- *
* Make sure any pending truncation is applied before doing anything
* that may depend on it.
*/
-void __ceph_do_pending_vmtruncate(struct inode *inode)
+void __ceph_do_pending_vmtruncate(struct inode *inode, bool needlock)
{
struct ceph_inode_info *ci = ceph_inode(inode);
u64 to;
@@ -1532,7 +1525,11 @@ retry:
ci->i_truncate_pending, to);
spin_unlock(&ci->i_ceph_lock);
+ if (needlock)
+ mutex_lock(&inode->i_mutex);
truncate_inode_pages(inode->i_mapping, to);
+ if (needlock)
+ mutex_unlock(&inode->i_mutex);
spin_lock(&ci->i_ceph_lock);
if (to == ci->i_truncate_size) {
@@ -1563,6 +1560,12 @@ static void *ceph_sym_follow_link(struct dentry *dentry, struct nameidata *nd)
static const struct inode_operations ceph_symlink_iops = {
.readlink = generic_readlink,
.follow_link = ceph_sym_follow_link,
+ .setattr = ceph_setattr,
+ .getattr = ceph_getattr,
+ .setxattr = ceph_setxattr,
+ .getxattr = ceph_getxattr,
+ .listxattr = ceph_listxattr,
+ .removexattr = ceph_removexattr,
};
/*
@@ -1585,7 +1588,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
if (ceph_snap(inode) != CEPH_NOSNAP)
return -EROFS;
- __ceph_do_pending_vmtruncate(inode);
+ __ceph_do_pending_vmtruncate(inode, false);
err = inode_change_ok(inode, attr);
if (err != 0)
@@ -1767,7 +1770,7 @@ int ceph_setattr(struct dentry *dentry, struct iattr *attr)
ceph_cap_string(dirtied), mask);
ceph_mdsc_put_request(req);
- __ceph_do_pending_vmtruncate(inode);
+ __ceph_do_pending_vmtruncate(inode, false);
return err;
out:
spin_unlock(&ci->i_ceph_lock);
diff --git a/fs/ceph/ioctl.c b/fs/ceph/ioctl.c
index 4a98934..e0b4ef3 100644
--- a/fs/ceph/ioctl.c
+++ b/fs/ceph/ioctl.c
@@ -208,8 +208,9 @@ static long ceph_ioctl_get_dataloc(struct file *file, void __user *arg)
snprintf(dl.object_name, sizeof(dl.object_name), "%llx.%08llx",
ceph_ino(inode), dl.object_no);
- ceph_calc_object_layout(&pgid, dl.object_name, &ci->i_layout,
- osdc->osdmap);
+
+ ceph_calc_ceph_pg(&pgid, dl.object_name, osdc->osdmap,
+ ceph_file_layout_pg_pool(ci->i_layout));
dl.osd = ceph_calc_pg_primary(osdc->osdmap, pgid);
if (dl.osd >= 0) {
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 442880d..4f22671 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -265,7 +265,8 @@ static int parse_reply_info_extra(void **p, void *end,
{
if (info->head->op == CEPH_MDS_OP_GETFILELOCK)
return parse_reply_info_filelock(p, end, info, features);
- else if (info->head->op == CEPH_MDS_OP_READDIR)
+ else if (info->head->op == CEPH_MDS_OP_READDIR ||
+ info->head->op == CEPH_MDS_OP_LSSNAP)
return parse_reply_info_dir(p, end, info, features);
else if (info->head->op == CEPH_MDS_OP_CREATE)
return parse_reply_info_create(p, end, info, features);
@@ -364,9 +365,9 @@ void ceph_put_mds_session(struct ceph_mds_session *s)
atomic_read(&s->s_ref), atomic_read(&s->s_ref)-1);
if (atomic_dec_and_test(&s->s_ref)) {
if (s->s_auth.authorizer)
- s->s_mdsc->fsc->client->monc.auth->ops->destroy_authorizer(
- s->s_mdsc->fsc->client->monc.auth,
- s->s_auth.authorizer);
+ ceph_auth_destroy_authorizer(
+ s->s_mdsc->fsc->client->monc.auth,
+ s->s_auth.authorizer);
kfree(s);
}
}
@@ -1196,6 +1197,8 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg)
session->s_trim_caps--;
if (oissued) {
/* we aren't the only cap.. just remove us */
+ __queue_cap_release(session, ceph_ino(inode), cap->cap_id,
+ cap->mseq, cap->issue_seq);
__ceph_remove_cap(cap);
} else {
/* try to drop referring dentries */
@@ -1718,8 +1721,12 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
- msg->pages = req->r_pages;
- msg->nr_pages = req->r_num_pages;
+ if (req->r_data_len) {
+ /* outbound data set only by ceph_sync_setxattr() */
+ BUG_ON(!req->r_pages);
+ ceph_msg_data_add_pages(msg, req->r_pages, req->r_data_len, 0);
+ }
+
msg->hdr.data_len = cpu_to_le32(req->r_data_len);
msg->hdr.data_off = cpu_to_le16(0);
@@ -1913,6 +1920,7 @@ static void __wake_requests(struct ceph_mds_client *mdsc,
req = list_entry(tmp_list.next,
struct ceph_mds_request, r_wait);
list_del_init(&req->r_wait);
+ dout(" wake request %p tid %llu\n", req, req->r_tid);
__do_request(mdsc, req);
}
}
@@ -2026,20 +2034,16 @@ out:
}
/*
- * Invalidate dir D_COMPLETE, dentry lease state on an aborted MDS
+ * Invalidate dir's completeness, dentry lease state on an aborted MDS
* namespace request.
*/
void ceph_invalidate_dir_request(struct ceph_mds_request *req)
{
struct inode *inode = req->r_locked_dir;
- struct ceph_inode_info *ci = ceph_inode(inode);
- dout("invalidate_dir_request %p (D_COMPLETE, lease(s))\n", inode);
- spin_lock(&ci->i_ceph_lock);
- ceph_dir_clear_complete(inode);
- ci->i_release_count++;
- spin_unlock(&ci->i_ceph_lock);
+ dout("invalidate_dir_request %p (complete, lease(s))\n", inode);
+ ceph_dir_clear_complete(inode);
if (req->r_dentry)
ceph_invalidate_dentry_lease(req->r_dentry);
if (req->r_old_dentry)
@@ -2599,11 +2603,13 @@ static void send_mds_reconnect(struct ceph_mds_client *mdsc,
goto fail;
}
- reply->pagelist = pagelist;
if (recon_state.flock)
reply->hdr.version = cpu_to_le16(2);
- reply->hdr.data_len = cpu_to_le32(pagelist->length);
- reply->nr_pages = calc_pages_for(0, pagelist->length);
+ if (pagelist->length) {
+ /* set up outbound data if we have any */
+ reply->hdr.data_len = cpu_to_le32(pagelist->length);
+ ceph_msg_data_add_pagelist(reply, pagelist);
+ }
ceph_con_send(&session->s_con, reply);
mutex_unlock(&session->s_mutex);
@@ -3433,13 +3439,17 @@ static struct ceph_auth_handshake *get_authorizer(struct ceph_connection *con,
struct ceph_auth_handshake *auth = &s->s_auth;
if (force_new && auth->authorizer) {
- if (ac->ops && ac->ops->destroy_authorizer)
- ac->ops->destroy_authorizer(ac, auth->authorizer);
+ ceph_auth_destroy_authorizer(ac, auth->authorizer);
auth->authorizer = NULL;
}
- if (!auth->authorizer && ac->ops && ac->ops->create_authorizer) {
- int ret = ac->ops->create_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
- auth);
+ if (!auth->authorizer) {
+ int ret = ceph_auth_create_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
+ auth);
+ if (ret)
+ return ERR_PTR(ret);
+ } else {
+ int ret = ceph_auth_update_authorizer(ac, CEPH_ENTITY_TYPE_MDS,
+ auth);
if (ret)
return ERR_PTR(ret);
}
@@ -3455,7 +3465,7 @@ static int verify_authorizer_reply(struct ceph_connection *con, int len)
struct ceph_mds_client *mdsc = s->s_mdsc;
struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
- return ac->ops->verify_authorizer_reply(ac, s->s_auth.authorizer, len);
+ return ceph_auth_verify_authorizer_reply(ac, s->s_auth.authorizer, len);
}
static int invalidate_authorizer(struct ceph_connection *con)
@@ -3464,12 +3474,32 @@ static int invalidate_authorizer(struct ceph_connection *con)
struct ceph_mds_client *mdsc = s->s_mdsc;
struct ceph_auth_client *ac = mdsc->fsc->client->monc.auth;
- if (ac->ops->invalidate_authorizer)
- ac->ops->invalidate_authorizer(ac, CEPH_ENTITY_TYPE_MDS);
+ ceph_auth_invalidate_authorizer(ac, CEPH_ENTITY_TYPE_MDS);
return ceph_monc_validate_auth(&mdsc->fsc->client->monc);
}
+static struct ceph_msg *mds_alloc_msg(struct ceph_connection *con,
+ struct ceph_msg_header *hdr, int *skip)
+{
+ struct ceph_msg *msg;
+ int type = (int) le16_to_cpu(hdr->type);
+ int front_len = (int) le32_to_cpu(hdr->front_len);
+
+ if (con->in_msg)
+ return con->in_msg;
+
+ *skip = 0;
+ msg = ceph_msg_new(type, front_len, GFP_NOFS, false);
+ if (!msg) {
+ pr_err("unable to allocate msg type %d len %d\n",
+ type, front_len);
+ return NULL;
+ }
+
+ return msg;
+}
+
static const struct ceph_connection_operations mds_con_ops = {
.get = con_get,
.put = con_put,
@@ -3478,6 +3508,7 @@ static const struct ceph_connection_operations mds_con_ops = {
.verify_authorizer_reply = verify_authorizer_reply,
.invalidate_authorizer = invalidate_authorizer,
.peer_reset = peer_reset,
+ .alloc_msg = mds_alloc_msg,
};
/* eof */
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 0d3c924..9278dec 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -20,7 +20,10 @@ int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
{
int n = 0;
int i;
- char r;
+
+ /* special case for one mds */
+ if (1 == m->m_max_mds && m->m_info[0].state > 0)
+ return 0;
/* count */
for (i = 0; i < m->m_max_mds; i++)
@@ -30,8 +33,7 @@ int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
return -1;
/* pick */
- get_random_bytes(&r, 1);
- n = r % n;
+ n = prandom_u32() % n;
i = 0;
for (i = 0; n > 0; i++, n--)
while (m->m_info[i].state <= 0)
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c
index cbb2f54..f01645a 100644
--- a/fs/ceph/snap.c
+++ b/fs/ceph/snap.c
@@ -332,10 +332,9 @@ static int build_snap_context(struct ceph_snap_realm *realm)
err = -ENOMEM;
if (num > (SIZE_MAX - sizeof(*snapc)) / sizeof(u64))
goto fail;
- snapc = kzalloc(sizeof(*snapc) + num*sizeof(u64), GFP_NOFS);
+ snapc = ceph_create_snap_context(num, GFP_NOFS);
if (!snapc)
goto fail;
- atomic_set(&snapc->nref, 1);
/* build (reverse sorted) snap vector */
num = 0;
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 6ddc0bc..7d377c9 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -479,6 +479,8 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
CEPH_FEATURE_FLOCK |
CEPH_FEATURE_DIRLAYOUTHASH;
const unsigned required_features = 0;
+ int page_count;
+ size_t size;
int err = -ENOMEM;
fsc = kzalloc(sizeof(*fsc), GFP_KERNEL);
@@ -522,8 +524,9 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
/* set up mempools */
err = -ENOMEM;
- fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10,
- fsc->mount_options->wsize >> PAGE_CACHE_SHIFT);
+ page_count = fsc->mount_options->wsize >> PAGE_CACHE_SHIFT;
+ size = sizeof (struct page *) * (page_count ? page_count : 1);
+ fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10, size);
if (!fsc->wb_pagevec_pool)
goto fail_trunc_wq;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index c7b3097..8696be2f 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -204,7 +204,6 @@ struct ceph_inode_xattr {
* Ceph dentry state
*/
struct ceph_dentry_info {
- unsigned long flags;
struct ceph_mds_session *lease_session;
u32 lease_gen, lease_shared_gen;
u32 lease_seq;
@@ -215,18 +214,6 @@ struct ceph_dentry_info {
u64 offset;
};
-/*
- * dentry flags
- *
- * The locking for D_COMPLETE is a bit odd:
- * - we can clear it at almost any time (see ceph_d_prune)
- * - it is only meaningful if:
- * - we hold dir inode i_ceph_lock
- * - we hold dir FILE_SHARED caps
- * - the dentry D_COMPLETE is set
- */
-#define CEPH_D_COMPLETE 1 /* if set, d_u.d_subdirs is complete directory */
-
struct ceph_inode_xattrs_info {
/*
* (still encoded) xattr blob. we avoid the overhead of parsing
@@ -257,7 +244,8 @@ struct ceph_inode_info {
u32 i_time_warp_seq;
unsigned i_ceph_flags;
- unsigned long i_release_count;
+ atomic_t i_release_count;
+ atomic_t i_complete_count;
struct ceph_dir_layout i_dir_layout;
struct ceph_file_layout i_layout;
@@ -267,7 +255,7 @@ struct ceph_inode_info {
struct timespec i_rctime;
u64 i_rbytes, i_rfiles, i_rsubdirs;
u64 i_files, i_subdirs;
- u64 i_max_offset; /* largest readdir offset, set with D_COMPLETE */
+ u64 i_max_offset; /* largest readdir offset, set with complete dir */
struct rb_root i_fragtree;
struct mutex i_fragtree_mutex;
@@ -436,33 +424,31 @@ static inline struct inode *ceph_find_inode(struct super_block *sb,
#define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */
#define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */
-static inline void ceph_i_clear(struct inode *inode, unsigned mask)
+static inline void __ceph_dir_set_complete(struct ceph_inode_info *ci,
+ int release_count)
{
- struct ceph_inode_info *ci = ceph_inode(inode);
-
- spin_lock(&ci->i_ceph_lock);
- ci->i_ceph_flags &= ~mask;
- spin_unlock(&ci->i_ceph_lock);
+ atomic_set(&ci->i_complete_count, release_count);
}
-static inline void ceph_i_set(struct inode *inode, unsigned mask)
+static inline void __ceph_dir_clear_complete(struct ceph_inode_info *ci)
{
- struct ceph_inode_info *ci = ceph_inode(inode);
+ atomic_inc(&ci->i_release_count);
+}
- spin_lock(&ci->i_ceph_lock);
- ci->i_ceph_flags |= mask;
- spin_unlock(&ci->i_ceph_lock);
+static inline bool __ceph_dir_is_complete(struct ceph_inode_info *ci)
+{
+ return atomic_read(&ci->i_complete_count) ==
+ atomic_read(&ci->i_release_count);
}
-static inline bool ceph_i_test(struct inode *inode, unsigned mask)
+static inline void ceph_dir_clear_complete(struct inode *inode)
{
- struct ceph_inode_info *ci = ceph_inode(inode);
- bool r;
+ __ceph_dir_clear_complete(ceph_inode(inode));
+}
- spin_lock(&ci->i_ceph_lock);
- r = (ci->i_ceph_flags & mask) == mask;
- spin_unlock(&ci->i_ceph_lock);
- return r;
+static inline bool ceph_dir_is_complete(struct inode *inode)
+{
+ return __ceph_dir_is_complete(ceph_inode(inode));
}
@@ -489,13 +475,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
}
/*
- * set/clear directory D_COMPLETE flag
- */
-void ceph_dir_set_complete(struct inode *inode);
-void ceph_dir_clear_complete(struct inode *inode);
-bool ceph_dir_test_complete(struct inode *inode);
-
-/*
* caps helpers
*/
static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci)
@@ -584,7 +563,7 @@ struct ceph_file_info {
u64 next_offset; /* offset of next chunk (last_name's + 1) */
char *last_name; /* last entry in previous chunk */
struct dentry *dentry; /* next dentry (for dcache readdir) */
- unsigned long dir_release_count;
+ int dir_release_count;
/* used for -o dirstat read() on directory thing */
char *dir_info;
@@ -713,7 +692,7 @@ extern int ceph_readdir_prepopulate(struct ceph_mds_request *req,
extern int ceph_inode_holds_cap(struct inode *inode, int mask);
extern int ceph_inode_set_size(struct inode *inode, loff_t size);
-extern void __ceph_do_pending_vmtruncate(struct inode *inode);
+extern void __ceph_do_pending_vmtruncate(struct inode *inode, bool needlock);
extern void ceph_queue_vmtruncate(struct inode *inode);
extern void ceph_queue_invalidate(struct inode *inode);
@@ -755,6 +734,8 @@ static inline void ceph_remove_cap(struct ceph_cap *cap)
extern void ceph_put_cap(struct ceph_mds_client *mdsc,
struct ceph_cap *cap);
+extern void __queue_cap_release(struct ceph_mds_session *session, u64 ino,
+ u64 cap_id, u32 migrate_seq, u32 issue_seq);
extern void ceph_queue_caps_release(struct inode *inode);
extern int ceph_write_inode(struct inode *inode, struct writeback_control *wbc);
extern int ceph_fsync(struct file *file, loff_t start, loff_t end,
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