diff options
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-08-21 12:36:04 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2013-08-22 08:58:19 -0400 |
| commit | 1ca42382afd67bf58523d36b00fb4ff487d8173b (patch) | |
| tree | ac285dda99b3a9227a7dc75fe6abcc7dac4b4b3b /fs/nfs/dir.c | |
| parent | 8b0ad3d489cb107804bd8c78695532794eec73d5 (diff) | |
NFS: Add tracepoints for debugging directory changes
Add tracepoints for mknod, mkdir, rmdir, remove (unlink) and symlink.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/dir.c')
| -rw-r--r-- | fs/nfs/dir.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 9c078126542..e41dec5cfbc 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1642,7 +1642,9 @@ nfs_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t rdev) attr.ia_mode = mode; attr.ia_valid = ATTR_MODE; + trace_nfs_mknod_enter(dir, dentry); status = NFS_PROTO(dir)->mknod(dir, dentry, &attr, rdev); + trace_nfs_mknod_exit(dir, dentry, status); if (status != 0) goto out_err; return 0; @@ -1666,7 +1668,9 @@ int nfs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) attr.ia_valid = ATTR_MODE; attr.ia_mode = mode | S_IFDIR; + trace_nfs_mkdir_enter(dir, dentry); error = NFS_PROTO(dir)->mkdir(dir, dentry, &attr); + trace_nfs_mkdir_exit(dir, dentry, error); if (error != 0) goto out_err; return 0; @@ -1689,12 +1693,14 @@ int nfs_rmdir(struct inode *dir, struct dentry *dentry) dfprintk(VFS, "NFS: rmdir(%s/%ld), %s\n", dir->i_sb->s_id, dir->i_ino, dentry->d_name.name); + trace_nfs_rmdir_enter(dir, dentry); error = NFS_PROTO(dir)->rmdir(dir, &dentry->d_name); /* Ensure the VFS deletes this inode */ if (error == 0 && dentry->d_inode != NULL) clear_nlink(dentry->d_inode); else if (error == -ENOENT) nfs_dentry_handle_enoent(dentry); + trace_nfs_rmdir_exit(dir, dentry, error); return error; } @@ -1722,6 +1728,7 @@ static int nfs_safe_remove(struct dentry *dentry) goto out; } + trace_nfs_remove_enter(dir, dentry); if (inode != NULL) { NFS_PROTO(inode)->return_delegation(inode); error = NFS_PROTO(dir)->remove(dir, &dentry->d_name); @@ -1731,6 +1738,7 @@ static int nfs_safe_remove(struct dentry *dentry) error = NFS_PROTO(dir)->remove(dir, &dentry->d_name); if (error == -ENOENT) nfs_dentry_handle_enoent(dentry); + trace_nfs_remove_exit(dir, dentry, error); out: return error; } @@ -1748,13 +1756,14 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry) dfprintk(VFS, "NFS: unlink(%s/%ld, %s)\n", dir->i_sb->s_id, dir->i_ino, dentry->d_name.name); + trace_nfs_unlink_enter(dir, dentry); spin_lock(&dentry->d_lock); if (d_count(dentry) > 1) { spin_unlock(&dentry->d_lock); /* Start asynchronous writeout of the inode */ write_inode_now(dentry->d_inode, 0); error = nfs_sillyrename(dir, dentry); - return error; + goto out; } if (!d_unhashed(dentry)) { __d_drop(dentry); @@ -1766,6 +1775,8 @@ int nfs_unlink(struct inode *dir, struct dentry *dentry) nfs_set_verifier(dentry, nfs_save_change_attribute(dir)); } else if (need_rehash) d_rehash(dentry); +out: + trace_nfs_unlink_exit(dir, dentry, error); return error; } EXPORT_SYMBOL_GPL(nfs_unlink); @@ -1812,7 +1823,9 @@ int nfs_symlink(struct inode *dir, struct dentry *dentry, const char *symname) memset(kaddr + pathlen, 0, PAGE_SIZE - pathlen); kunmap_atomic(kaddr); + trace_nfs_symlink_enter(dir, dentry); error = NFS_PROTO(dir)->symlink(dir, dentry, page, pathlen, &attr); + trace_nfs_symlink_exit(dir, dentry, error); if (error != 0) { dfprintk(VFS, "NFS: symlink(%s/%ld, %s, %s) error %d\n", dir->i_sb->s_id, dir->i_ino, |