ALSA: pcm: Use dma_bytes as size parameter in dma_mmap_coherent()

[pandora-kernel.git] / fs / ocfs2 / file.c

diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 07ee5b4..a22b5c9 100644 (file)
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -474,11 +474,6 @@ static int ocfs2_truncate_file(struct inode *inode,
                goto bail;
        }
 
-       /* lets handle the simple truncate cases before doing any more
-        * cluster locking. */
-       if (new_i_size == le64_to_cpu(fe->i_size))
-               goto bail;
-
        down_write(&OCFS2_I(inode)->ip_alloc_sem);
 
        ocfs2_resv_discard(&osb->osb_la_resmap,
@@ -1127,7 +1122,7 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
        if (!(attr->ia_valid & OCFS2_VALID_ATTRS))
                return 0;
 
-       status = inode_change_ok(inode, attr);
+       status = setattr_prepare(dentry, attr);
        if (status)
                return status;
 
@@ -1149,14 +1144,14 @@ int ocfs2_setattr(struct dentry *dentry, struct iattr *attr)
                goto bail_unlock_rw;
        }
 
-       if (size_change && attr->ia_size != i_size_read(inode)) {
+       if (size_change) {
                status = inode_newsize_ok(inode, attr->ia_size);
                if (status)
                        goto bail_unlock;
 
                inode_dio_wait(inode);
 
-               if (i_size_read(inode) > attr->ia_size) {
+               if (i_size_read(inode) >= attr->ia_size) {
                        if (ocfs2_should_order_data(inode)) {
                                status = ocfs2_begin_ordered_truncate(inode,
                                                                      attr->ia_size);
@@ -1518,7 +1513,8 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
                                       u64 start, u64 len)
 {
        int ret = 0;
-       u64 tmpend, end = start + len;
+       u64 tmpend = 0;
+       u64 end = start + len;
        struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
        unsigned int csize = osb->s_clustersize;
        handle_t *handle;
@@ -1550,18 +1546,31 @@ static int ocfs2_zero_partial_clusters(struct inode *inode,
        }
 
        /*
-        * We want to get the byte offset of the end of the 1st cluster.
+        * If start is on a cluster boundary and end is somewhere in another
+        * cluster, we have not COWed the cluster starting at start, unless
+        * end is also within the same cluster. So, in this case, we skip this
+        * first call to ocfs2_zero_range_for_truncate() truncate and move on
+        * to the next one.
         */
-       tmpend = (u64)osb->s_clustersize + (start & ~(osb->s_clustersize - 1));
-       if (tmpend > end)
-               tmpend = end;
+       if ((start & (csize - 1)) != 0) {
+               /*
+                * We want to get the byte offset of the end of the 1st
+                * cluster.
+                */
+               tmpend = (u64)osb->s_clustersize +
+                       (start & ~(osb->s_clustersize - 1));
+               if (tmpend > end)
+                       tmpend = end;
 
-       trace_ocfs2_zero_partial_clusters_range1((unsigned long long)start,
-                                                (unsigned long long)tmpend);
+               trace_ocfs2_zero_partial_clusters_range1(
+                       (unsigned long long)start,
+                       (unsigned long long)tmpend);
 
-       ret = ocfs2_zero_range_for_truncate(inode, handle, start, tmpend);
-       if (ret)
-               mlog_errno(ret);
+               ret = ocfs2_zero_range_for_truncate(inode, handle, start,
+                                                   tmpend);
+               if (ret)
+                       mlog_errno(ret);
+       }
 
        if (tmpend < end) {
                /*
@@ -1950,7 +1959,7 @@ static int __ocfs2_change_file_space(struct file *file, struct inode *inode,
        if (ret < 0)
                mlog_errno(ret);
 
-       if (file->f_flags & O_SYNC)
+       if (file && (file->f_flags & O_SYNC))
                handle->h_sync = 1;
 
        ocfs2_commit_trans(osb, handle);
@@ -2387,10 +2396,14 @@ out_dio:
        /* buffered aio wouldn't have proper lock coverage today */
        BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT));
 
+       if (unlikely(written <= 0))
+               goto no_sync;
+
        if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) ||
            ((file->f_flags & O_DIRECT) && !direct_io)) {
-               ret = filemap_fdatawrite_range(file->f_mapping, pos,
-                                              pos + count - 1);
+               ret = filemap_fdatawrite_range(file->f_mapping,
+                                              iocb->ki_pos - written,
+                                              iocb->ki_pos - 1);
                if (ret < 0)
                        written = ret;
 
@@ -2403,10 +2416,12 @@ out_dio:
                }
 
                if (!ret)
-                       ret = filemap_fdatawait_range(file->f_mapping, pos,
-                                                     pos + count - 1);
+                       ret = filemap_fdatawait_range(file->f_mapping,
+                                                     iocb->ki_pos - written,
+                                                     iocb->ki_pos - 1);
        }
 
+no_sync:
        /*
         * deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io
         * function pointer which is called when o_direct io completes so that
@@ -2468,9 +2483,7 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
        struct address_space *mapping = out->f_mapping;
        struct inode *inode = mapping->host;
        struct splice_desc sd = {
-               .total_len = len,
                .flags = flags,
-               .pos = *ppos,
                .u.file = out,
        };
 
@@ -2480,6 +2493,12 @@ static ssize_t ocfs2_file_splice_write(struct pipe_inode_info *pipe,
                        out->f_path.dentry->d_name.len,
                        out->f_path.dentry->d_name.name, len);
 
+       ret = generic_write_checks(out, ppos, &len, 0);
+       if (ret)
+               return ret;
+       sd.total_len = len;
+       sd.pos = *ppos;
+
        if (pipe->inode)
                mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_PARENT);