#include "extent_map.h"
#include "inode.h"
#include "super.h"
+#include "symlink.h"
#include "buffer_head_io.h"
struct ocfs2_extent_block *eb;
struct ocfs2_extent_list *el;
- ret = ocfs2_read_block(inode, last_eb_blk, &eb_bh);
+ ret = ocfs2_read_extent_block(INODE_CACHE(inode), last_eb_blk, &eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
eb = (struct ocfs2_extent_block *) eb_bh->b_data;
el = &eb->h_list;
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(eb)) {
- ret = -EROFS;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, eb);
- goto out;
- }
-
if (el->l_tree_depth) {
ocfs2_error(inode->i_sb,
"Inode %lu has non zero tree depth in "
* eb_bh is NULL. Otherwise, eb_bh should point to the extent block
* containing el.
*/
-static int ocfs2_figure_hole_clusters(struct inode *inode,
- struct ocfs2_extent_list *el,
- struct buffer_head *eb_bh,
- u32 v_cluster,
- u32 *num_clusters)
+int ocfs2_figure_hole_clusters(struct ocfs2_caching_info *ci,
+ struct ocfs2_extent_list *el,
+ struct buffer_head *eb_bh,
+ u32 v_cluster,
+ u32 *num_clusters)
{
int ret, i;
struct buffer_head *next_eb_bh = NULL;
if (le64_to_cpu(eb->h_next_leaf_blk) == 0ULL)
goto no_more_extents;
- ret = ocfs2_read_block(inode,
- le64_to_cpu(eb->h_next_leaf_blk),
- &next_eb_bh);
+ ret = ocfs2_read_extent_block(ci,
+ le64_to_cpu(eb->h_next_leaf_blk),
+ &next_eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
}
- next_eb = (struct ocfs2_extent_block *)next_eb_bh->b_data;
-
- if (!OCFS2_IS_VALID_EXTENT_BLOCK(next_eb)) {
- ret = -EROFS;
- OCFS2_RO_ON_INVALID_EXTENT_BLOCK(inode->i_sb, next_eb);
- goto out;
- }
+ next_eb = (struct ocfs2_extent_block *)next_eb_bh->b_data;
el = &next_eb->h_list;
-
i = ocfs2_search_for_hole_index(el, v_cluster);
}
tree_height = le16_to_cpu(el->l_tree_depth);
if (tree_height > 0) {
- ret = ocfs2_find_leaf(inode, el, v_cluster, &eb_bh);
+ ret = ocfs2_find_leaf(INODE_CACHE(inode), el, v_cluster,
+ &eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
* field.
*/
if (hole_len) {
- ret = ocfs2_figure_hole_clusters(inode, el, eb_bh,
+ ret = ocfs2_figure_hole_clusters(INODE_CACHE(inode),
+ el, eb_bh,
v_cluster, &len);
if (ret) {
mlog_errno(ret);
int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
u32 *p_cluster, u32 *num_clusters,
- struct ocfs2_extent_list *el)
+ struct ocfs2_extent_list *el,
+ unsigned int *extent_flags)
{
int ret = 0, i;
struct buffer_head *eb_bh = NULL;
u32 coff;
if (el->l_tree_depth) {
- ret = ocfs2_find_leaf(inode, el, v_cluster, &eb_bh);
+ ret = ocfs2_find_leaf(INODE_CACHE(inode), el, v_cluster,
+ &eb_bh);
if (ret) {
mlog_errno(ret);
goto out;
*p_cluster = *p_cluster + coff;
if (num_clusters)
*num_clusters = ocfs2_rec_clusters(el, rec) - coff;
+
+ if (extent_flags)
+ *extent_flags = rec->e_flags;
}
out:
if (eb_bh)
if (ret == 0)
goto out;
- ret = ocfs2_read_block(inode, OCFS2_I(inode)->ip_blkno, &di_bh);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
return ret;
}
+/*
+ * The ocfs2_fiemap_inline() may be a little bit misleading, since
+ * it not only handles the fiemap for inlined files, but also deals
+ * with the fast symlink, cause they have no difference for extent
+ * mapping per se.
+ */
static int ocfs2_fiemap_inline(struct inode *inode, struct buffer_head *di_bh,
struct fiemap_extent_info *fieinfo,
u64 map_start)
struct ocfs2_inode_info *oi = OCFS2_I(inode);
di = (struct ocfs2_dinode *)di_bh->b_data;
- id_count = le16_to_cpu(di->id2.i_data.id_count);
+ if (ocfs2_inode_is_fast_symlink(inode))
+ id_count = ocfs2_fast_symlink_chars(inode->i_sb);
+ else
+ id_count = le16_to_cpu(di->id2.i_data.id_count);
if (map_start < id_count) {
phys = oi->ip_blkno << inode->i_sb->s_blocksize_bits;
- phys += offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+ if (ocfs2_inode_is_fast_symlink(inode))
+ phys += offsetof(struct ocfs2_dinode, id2.i_symlink);
+ else
+ phys += offsetof(struct ocfs2_dinode,
+ id2.i_data.id_data);
ret = fiemap_fill_next_extent(fieinfo, 0, phys, id_count,
flags);
down_read(&OCFS2_I(inode)->ip_alloc_sem);
/*
- * Handle inline-data separately.
+ * Handle inline-data and fast symlink separately.
*/
- if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) {
+ if ((OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL) ||
+ ocfs2_inode_is_fast_symlink(inode)) {
ret = ocfs2_fiemap_inline(inode, di_bh, fieinfo, map_start);
goto out_unlock;
}
fe_flags = 0;
if (rec.e_flags & OCFS2_EXT_UNWRITTEN)
fe_flags |= FIEMAP_EXTENT_UNWRITTEN;
+ if (rec.e_flags & OCFS2_EXT_REFCOUNTED)
+ fe_flags |= FIEMAP_EXTENT_SHARED;
if (is_last)
fe_flags |= FIEMAP_EXTENT_LAST;
len_bytes = (u64)le16_to_cpu(rec.e_leaf_clusters) << osb->s_clustersize_bits;
return ret;
}
+
+int ocfs2_read_virt_blocks(struct inode *inode, u64 v_block, int nr,
+ struct buffer_head *bhs[], int flags,
+ int (*validate)(struct super_block *sb,
+ struct buffer_head *bh))
+{
+ int rc = 0;
+ u64 p_block, p_count;
+ int i, count, done = 0;
+
+ mlog_entry("(inode = %p, v_block = %llu, nr = %d, bhs = %p, "
+ "flags = %x, validate = %p)\n",
+ inode, (unsigned long long)v_block, nr, bhs, flags,
+ validate);
+
+ if (((v_block + nr - 1) << inode->i_sb->s_blocksize_bits) >=
+ i_size_read(inode)) {
+ BUG_ON(!(flags & OCFS2_BH_READAHEAD));
+ goto out;
+ }
+
+ while (done < nr) {
+ down_read(&OCFS2_I(inode)->ip_alloc_sem);
+ rc = ocfs2_extent_map_get_blocks(inode, v_block + done,
+ &p_block, &p_count, NULL);
+ up_read(&OCFS2_I(inode)->ip_alloc_sem);
+ if (rc) {
+ mlog_errno(rc);
+ break;
+ }
+
+ if (!p_block) {
+ rc = -EIO;
+ mlog(ML_ERROR,
+ "Inode #%llu contains a hole at offset %llu\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)(v_block + done) <<
+ inode->i_sb->s_blocksize_bits);
+ break;
+ }
+
+ count = nr - done;
+ if (p_count < count)
+ count = p_count;
+
+ /*
+ * If the caller passed us bhs, they should have come
+ * from a previous readahead call to this function. Thus,
+ * they should have the right b_blocknr.
+ */
+ for (i = 0; i < count; i++) {
+ if (!bhs[done + i])
+ continue;
+ BUG_ON(bhs[done + i]->b_blocknr != (p_block + i));
+ }
+
+ rc = ocfs2_read_blocks(INODE_CACHE(inode), p_block, count,
+ bhs + done, flags, validate);
+ if (rc) {
+ mlog_errno(rc);
+ break;
+ }
+ done += count;
+ }
+
+out:
+ mlog_exit(rc);
+ return rc;
+}
+
+
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