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Diffstat (limited to 'fs/ceph/inode.c')
-rw-r--r--fs/ceph/inode.c88
1 files changed, 57 insertions, 31 deletions
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 1d6a45b5a04..e61de4f7b99 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -2,7 +2,6 @@
#include <linux/module.h>
#include <linux/fs.h>
-#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/uaccess.h>
@@ -369,6 +368,15 @@ struct inode *ceph_alloc_inode(struct super_block *sb)
return &ci->vfs_inode;
}
+static void ceph_i_callback(struct rcu_head *head)
+{
+ struct inode *inode = container_of(head, struct inode, i_rcu);
+ struct ceph_inode_info *ci = ceph_inode(inode);
+
+ INIT_LIST_HEAD(&inode->i_dentry);
+ kmem_cache_free(ceph_inode_cachep, ci);
+}
+
void ceph_destroy_inode(struct inode *inode)
{
struct ceph_inode_info *ci = ceph_inode(inode);
@@ -408,7 +416,7 @@ void ceph_destroy_inode(struct inode *inode)
if (ci->i_xattrs.prealloc_blob)
ceph_buffer_put(ci->i_xattrs.prealloc_blob);
- kmem_cache_free(ceph_inode_cachep, ci);
+ call_rcu(&inode->i_rcu, ceph_i_callback);
}
@@ -471,7 +479,9 @@ void ceph_fill_file_time(struct inode *inode, int issued,
if (issued & (CEPH_CAP_FILE_EXCL|
CEPH_CAP_FILE_WR|
- CEPH_CAP_FILE_BUFFER)) {
+ CEPH_CAP_FILE_BUFFER|
+ CEPH_CAP_AUTH_EXCL|
+ CEPH_CAP_XATTR_EXCL)) {
if (timespec_compare(ctime, &inode->i_ctime) > 0) {
dout("ctime %ld.%09ld -> %ld.%09ld inc w/ cap\n",
inode->i_ctime.tv_sec, inode->i_ctime.tv_nsec,
@@ -511,7 +521,7 @@ void ceph_fill_file_time(struct inode *inode, int issued,
warn = 1;
}
} else {
- /* we have no write caps; whatever the MDS says is true */
+ /* we have no write|excl caps; whatever the MDS says is true */
if (ceph_seq_cmp(time_warp_seq, ci->i_time_warp_seq) >= 0) {
inode->i_ctime = *ctime;
inode->i_mtime = *mtime;
@@ -567,12 +577,17 @@ static int fill_inode(struct inode *inode,
/*
* provided version will be odd if inode value is projected,
- * even if stable. skip the update if we have a newer info
- * (e.g., due to inode info racing form multiple MDSs), or if
- * we are getting projected (unstable) inode info.
+ * even if stable. skip the update if we have newer stable
+ * info (ours>=theirs, e.g. due to racing mds replies), unless
+ * we are getting projected (unstable) info (in which case the
+ * version is odd, and we want ours>theirs).
+ * us them
+ * 2 2 skip
+ * 3 2 skip
+ * 3 3 update
*/
if (le64_to_cpu(info->version) > 0 &&
- (ci->i_version & ~1) > le64_to_cpu(info->version))
+ (ci->i_version & ~1) >= le64_to_cpu(info->version))
goto no_change;
issued = __ceph_caps_issued(ci, &implemented);
@@ -606,7 +621,14 @@ static int fill_inode(struct inode *inode,
le32_to_cpu(info->time_warp_seq),
&ctime, &mtime, &atime);
- ci->i_max_size = le64_to_cpu(info->max_size);
+ /* only update max_size on auth cap */
+ if ((info->cap.flags & CEPH_CAP_FLAG_AUTH) &&
+ ci->i_max_size != le64_to_cpu(info->max_size)) {
+ dout("max_size %lld -> %llu\n", ci->i_max_size,
+ le64_to_cpu(info->max_size));
+ ci->i_max_size = le64_to_cpu(info->max_size);
+ }
+
ci->i_layout = info->layout;
inode->i_blkbits = fls(le32_to_cpu(info->layout.fl_stripe_unit)) - 1;
@@ -828,13 +850,13 @@ static void ceph_set_dentry_offset(struct dentry *dn)
di->offset = ceph_inode(inode)->i_max_offset++;
spin_unlock(&inode->i_lock);
- spin_lock(&dcache_lock);
- spin_lock(&dn->d_lock);
+ spin_lock(&dir->d_lock);
+ spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
list_move(&dn->d_u.d_child, &dir->d_subdirs);
dout("set_dentry_offset %p %lld (%p %p)\n", dn, di->offset,
dn->d_u.d_child.prev, dn->d_u.d_child.next);
spin_unlock(&dn->d_lock);
- spin_unlock(&dcache_lock);
+ spin_unlock(&dir->d_lock);
}
/*
@@ -866,8 +888,8 @@ static struct dentry *splice_dentry(struct dentry *dn, struct inode *in,
} else if (realdn) {
dout("dn %p (%d) spliced with %p (%d) "
"inode %p ino %llx.%llx\n",
- dn, atomic_read(&dn->d_count),
- realdn, atomic_read(&realdn->d_count),
+ dn, dn->d_count,
+ realdn, realdn->d_count,
realdn->d_inode, ceph_vinop(realdn->d_inode));
dput(dn);
dn = realdn;
@@ -1055,7 +1077,8 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
ininfo = rinfo->targeti.in;
vino.ino = le64_to_cpu(ininfo->ino);
vino.snap = le64_to_cpu(ininfo->snapid);
- if (!dn->d_inode) {
+ in = dn->d_inode;
+ if (!in) {
in = ceph_get_inode(sb, vino);
if (IS_ERR(in)) {
pr_err("fill_trace bad get_inode "
@@ -1217,11 +1240,11 @@ retry_lookup:
goto retry_lookup;
} else {
/* reorder parent's d_subdirs */
- spin_lock(&dcache_lock);
- spin_lock(&dn->d_lock);
+ spin_lock(&parent->d_lock);
+ spin_lock_nested(&dn->d_lock, DENTRY_D_LOCK_NESTED);
list_move(&dn->d_u.d_child, &parent->d_subdirs);
spin_unlock(&dn->d_lock);
- spin_unlock(&dcache_lock);
+ spin_unlock(&parent->d_lock);
}
di = dn->d_fsdata;
@@ -1386,11 +1409,8 @@ static void ceph_invalidate_work(struct work_struct *work)
spin_lock(&inode->i_lock);
dout("invalidate_pages %p gen %d revoking %d\n", inode,
ci->i_rdcache_gen, ci->i_rdcache_revoking);
- if (ci->i_rdcache_gen == 0 ||
- ci->i_rdcache_revoking != ci->i_rdcache_gen) {
- BUG_ON(ci->i_rdcache_revoking > ci->i_rdcache_gen);
+ if (ci->i_rdcache_revoking != ci->i_rdcache_gen) {
/* nevermind! */
- ci->i_rdcache_revoking = 0;
spin_unlock(&inode->i_lock);
goto out;
}
@@ -1400,15 +1420,16 @@ static void ceph_invalidate_work(struct work_struct *work)
ceph_invalidate_nondirty_pages(inode->i_mapping);
spin_lock(&inode->i_lock);
- if (orig_gen == ci->i_rdcache_gen) {
+ if (orig_gen == ci->i_rdcache_gen &&
+ orig_gen == ci->i_rdcache_revoking) {
dout("invalidate_pages %p gen %d successful\n", inode,
ci->i_rdcache_gen);
- ci->i_rdcache_gen = 0;
- ci->i_rdcache_revoking = 0;
+ ci->i_rdcache_revoking--;
check = 1;
} else {
- dout("invalidate_pages %p gen %d raced, gen now %d\n",
- inode, orig_gen, ci->i_rdcache_gen);
+ dout("invalidate_pages %p gen %d raced, now %d revoking %d\n",
+ inode, orig_gen, ci->i_rdcache_gen,
+ ci->i_rdcache_revoking);
}
spin_unlock(&inode->i_lock);
@@ -1739,7 +1760,7 @@ int ceph_do_getattr(struct inode *inode, int mask)
return 0;
}
- dout("do_getattr inode %p mask %s\n", inode, ceph_cap_string(mask));
+ dout("do_getattr inode %p mask %s mode 0%o\n", inode, ceph_cap_string(mask), inode->i_mode);
if (ceph_caps_issued_mask(ceph_inode(inode), mask, 1))
return 0;
@@ -1760,12 +1781,17 @@ int ceph_do_getattr(struct inode *inode, int mask)
* Check inode permissions. We verify we have a valid value for
* the AUTH cap, then call the generic handler.
*/
-int ceph_permission(struct inode *inode, int mask)
+int ceph_permission(struct inode *inode, int mask, unsigned int flags)
{
- int err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED);
+ int err;
+
+ if (flags & IPERM_FLAG_RCU)
+ return -ECHILD;
+
+ err = ceph_do_getattr(inode, CEPH_CAP_AUTH_SHARED);
if (!err)
- err = generic_permission(inode, mask, NULL);
+ err = generic_permission(inode, mask, flags, NULL);
return err;
}
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-11-23 19:39:22 +0000