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Diffstat (limited to 'fs/ceph')
-rw-r--r--fs/ceph/addr.c21
-rw-r--r--fs/ceph/dir.c77
-rw-r--r--fs/ceph/file.c26
-rw-r--r--fs/ceph/super.c2
-rw-r--r--fs/ceph/super.h6
5 files changed, 73 insertions, 59 deletions
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 173b1d22e59b..8b67304e4b80 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -54,7 +54,12 @@
(CONGESTION_ON_THRESH(congestion_kb) - \
(CONGESTION_ON_THRESH(congestion_kb) >> 2))
-
+static inline struct ceph_snap_context *page_snap_context(struct page *page)
+{
+ if (PagePrivate(page))
+ return (void *)page->private;
+ return NULL;
+}
/*
* Dirty a page. Optimistically adjust accounting, on the assumption
@@ -142,10 +147,9 @@ static void ceph_invalidatepage(struct page *page, unsigned long offset)
{
struct inode *inode;
struct ceph_inode_info *ci;
- struct ceph_snap_context *snapc = (void *)page->private;
+ struct ceph_snap_context *snapc = page_snap_context(page);
BUG_ON(!PageLocked(page));
- BUG_ON(!page->private);
BUG_ON(!PagePrivate(page));
BUG_ON(!page->mapping);
@@ -182,7 +186,6 @@ static int ceph_releasepage(struct page *page, gfp_t g)
struct inode *inode = page->mapping ? page->mapping->host : NULL;
dout("%p releasepage %p idx %lu\n", inode, page, page->index);
WARN_ON(PageDirty(page));
- WARN_ON(page->private);
WARN_ON(PagePrivate(page));
return 0;
}
@@ -443,7 +446,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
osdc = &fsc->client->osdc;
/* verify this is a writeable snap context */
- snapc = (void *)page->private;
+ snapc = page_snap_context(page);
if (snapc == NULL) {
dout("writepage %p page %p not dirty?\n", inode, page);
goto out;
@@ -451,7 +454,7 @@ static int writepage_nounlock(struct page *page, struct writeback_control *wbc)
oldest = get_oldest_context(inode, &snap_size);
if (snapc->seq > oldest->seq) {
dout("writepage %p page %p snapc %p not writeable - noop\n",
- inode, page, (void *)page->private);
+ inode, page, snapc);
/* we should only noop if called by kswapd */
WARN_ON((current->flags & PF_MEMALLOC) == 0);
ceph_put_snap_context(oldest);
@@ -591,7 +594,7 @@ static void writepages_finish(struct ceph_osd_request *req,
clear_bdi_congested(&fsc->backing_dev_info,
BLK_RW_ASYNC);
- ceph_put_snap_context((void *)page->private);
+ ceph_put_snap_context(page_snap_context(page));
page->private = 0;
ClearPagePrivate(page);
dout("unlocking %d %p\n", i, page);
@@ -795,7 +798,7 @@ get_more_pages:
}
/* only if matching snap context */
- pgsnapc = (void *)page->private;
+ pgsnapc = page_snap_context(page);
if (pgsnapc->seq > snapc->seq) {
dout("page snapc %p %lld > oldest %p %lld\n",
pgsnapc, pgsnapc->seq, snapc, snapc->seq);
@@ -984,7 +987,7 @@ retry_locked:
BUG_ON(!ci->i_snap_realm);
down_read(&mdsc->snap_rwsem);
BUG_ON(!ci->i_snap_realm->cached_context);
- snapc = (void *)page->private;
+ snapc = page_snap_context(page);
if (snapc && snapc != ci->i_head_snapc) {
/*
* this page is already dirty in another (older) snap
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 3e8094be4604..00894ff9246c 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -576,7 +576,7 @@ static int is_root_ceph_dentry(struct inode *inode, struct dentry *dentry)
* the MDS so that it gets our 'caps wanted' value in a single op.
*/
static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
@@ -594,14 +594,6 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
if (err < 0)
return ERR_PTR(err);
- /* open (but not create!) intent? */
- if (nd &&
- (nd->flags & LOOKUP_OPEN) &&
- !(nd->intent.open.flags & O_CREAT)) {
- int mode = nd->intent.open.create_mode & ~current->fs->umask;
- return ceph_lookup_open(dir, dentry, nd, mode, 1);
- }
-
/* can we conclude ENOENT locally? */
if (dentry->d_inode == NULL) {
struct ceph_inode_info *ci = ceph_inode(dir);
@@ -642,13 +634,51 @@ static struct dentry *ceph_lookup(struct inode *dir, struct dentry *dentry,
return dentry;
}
+int ceph_atomic_open(struct inode *dir, struct dentry *dentry,
+ struct file *file, unsigned flags, umode_t mode,
+ int *opened)
+{
+ int err;
+ struct dentry *res = NULL;
+
+ if (!(flags & O_CREAT)) {
+ if (dentry->d_name.len > NAME_MAX)
+ return -ENAMETOOLONG;
+
+ err = ceph_init_dentry(dentry);
+ if (err < 0)
+ return err;
+
+ return ceph_lookup_open(dir, dentry, file, flags, mode, opened);
+ }
+
+ if (d_unhashed(dentry)) {
+ res = ceph_lookup(dir, dentry, 0);
+ if (IS_ERR(res))
+ return PTR_ERR(res);
+
+ if (res)
+ dentry = res;
+ }
+
+ /* We don't deal with positive dentries here */
+ if (dentry->d_inode)
+ return finish_no_open(file, res);
+
+ *opened |= FILE_CREATED;
+ err = ceph_lookup_open(dir, dentry, file, flags, mode, opened);
+ dput(res);
+
+ return err;
+}
+
/*
* If we do a create but get no trace back from the MDS, follow up with
* a lookup (the VFS expects us to link up the provided dentry).
*/
int ceph_handle_notrace_create(struct inode *dir, struct dentry *dentry)
{
- struct dentry *result = ceph_lookup(dir, dentry, NULL);
+ struct dentry *result = ceph_lookup(dir, dentry, 0);
if (result && !IS_ERR(result)) {
/*
@@ -700,25 +730,9 @@ static int ceph_mknod(struct inode *dir, struct dentry *dentry,
}
static int ceph_create(struct inode *dir, struct dentry *dentry, umode_t mode,
- struct nameidata *nd)
+ bool excl)
{
- dout("create in dir %p dentry %p name '%.*s'\n",
- dir, dentry, dentry->d_name.len, dentry->d_name.name);
-
- if (ceph_snap(dir) != CEPH_NOSNAP)
- return -EROFS;
-
- if (nd) {
- BUG_ON((nd->flags & LOOKUP_OPEN) == 0);
- dentry = ceph_lookup_open(dir, dentry, nd, mode, 0);
- /* hrm, what should i do here if we get aliased? */
- if (IS_ERR(dentry))
- return PTR_ERR(dentry);
- return 0;
- }
-
- /* fall back to mknod */
- return ceph_mknod(dir, dentry, (mode & ~S_IFMT) | S_IFREG, 0);
+ return ceph_mknod(dir, dentry, mode, 0);
}
static int ceph_symlink(struct inode *dir, struct dentry *dentry,
@@ -1028,12 +1042,12 @@ static int dir_lease_is_valid(struct inode *dir, struct dentry *dentry)
/*
* Check if cached dentry can be trusted.
*/
-static int ceph_d_revalidate(struct dentry *dentry, struct nameidata *nd)
+static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
{
int valid = 0;
struct inode *dir;
- if (nd && nd->flags & LOOKUP_RCU)
+ if (flags & LOOKUP_RCU)
return -ECHILD;
dout("d_revalidate %p '%.*s' inode %p offset %lld\n", dentry,
@@ -1080,7 +1094,7 @@ static void ceph_d_release(struct dentry *dentry)
}
static int ceph_snapdir_d_revalidate(struct dentry *dentry,
- struct nameidata *nd)
+ unsigned int flags)
{
/*
* Eventually, we'll want to revalidate snapped metadata
@@ -1357,6 +1371,7 @@ const struct inode_operations ceph_dir_iops = {
.rmdir = ceph_unlink,
.rename = ceph_rename,
.create = ceph_create,
+ .atomic_open = ceph_atomic_open,
};
const struct dentry_operations ceph_dentry_ops = {
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 988d4f302e48..1b81d6c31878 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -213,22 +213,15 @@ out:
* may_open() fails, the struct *file gets cleaned up (i.e.
* ceph_release gets called). So fear not!
*/
-/*
- * flags
- * path_lookup_open -> LOOKUP_OPEN
- * path_lookup_create -> LOOKUP_OPEN|LOOKUP_CREATE
- */
-struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd, int mode,
- int locked_dir)
+int ceph_lookup_open(struct inode *dir, struct dentry *dentry,
+ struct file *file, unsigned flags, umode_t mode,
+ int *opened)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(dir->i_sb);
struct ceph_mds_client *mdsc = fsc->mdsc;
- struct file *file;
struct ceph_mds_request *req;
struct dentry *ret;
int err;
- int flags = nd->intent.open.flags;
dout("ceph_lookup_open dentry %p '%.*s' flags %d mode 0%o\n",
dentry, dentry->d_name.len, dentry->d_name.name, flags, mode);
@@ -236,7 +229,7 @@ struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
/* do the open */
req = prepare_open_request(dir->i_sb, flags, mode);
if (IS_ERR(req))
- return ERR_CAST(req);
+ return PTR_ERR(req);
req->r_dentry = dget(dentry);
req->r_num_caps = 2;
if (flags & O_CREAT) {
@@ -254,14 +247,17 @@ struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
err = ceph_handle_notrace_create(dir, dentry);
if (err)
goto out;
- file = lookup_instantiate_filp(nd, req->r_dentry, ceph_open);
- if (IS_ERR(file))
- err = PTR_ERR(file);
+ err = finish_open(file, req->r_dentry, ceph_open, opened);
out:
ret = ceph_finish_lookup(req, dentry, err);
ceph_mdsc_put_request(req);
dout("ceph_lookup_open result=%p\n", ret);
- return ret;
+
+ if (IS_ERR(ret))
+ return PTR_ERR(ret);
+
+ dput(ret);
+ return err;
}
int ceph_release(struct inode *inode, struct file *file)
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 1e67dd7305a4..7076109f014d 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -871,7 +871,7 @@ static struct dentry *ceph_mount(struct file_system_type *fs_type,
if (ceph_test_opt(fsc->client, NOSHARE))
compare_super = NULL;
- sb = sget(fs_type, compare_super, ceph_set_super, fsc);
+ sb = sget(fs_type, compare_super, ceph_set_super, flags, fsc);
if (IS_ERR(sb)) {
res = ERR_CAST(sb);
goto out;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index fc35036d258d..f4d5522cb619 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -806,9 +806,9 @@ extern int ceph_copy_from_page_vector(struct page **pages,
loff_t off, size_t len);
extern struct page **ceph_alloc_page_vector(int num_pages, gfp_t flags);
extern int ceph_open(struct inode *inode, struct file *file);
-extern struct dentry *ceph_lookup_open(struct inode *dir, struct dentry *dentry,
- struct nameidata *nd, int mode,
- int locked_dir);
+extern int ceph_lookup_open(struct inode *dir, struct dentry *dentry,
+ struct file *od, unsigned flags,
+ umode_t mode, int *opened);
extern int ceph_release(struct inode *inode, struct file *filp);
/* dir.c */
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-06 20:09:25 +0300