#include <asm/byteorder.h>
#include <linux/swap.h>
#include <linux/pipe_fs_i.h>
+#include <linux/mpage.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_FILE_IO
#include <cluster/masklog.h>
goto bail;
}
- status = ocfs2_read_block(OCFS2_SB(inode->i_sb),
- OCFS2_I(inode)->ip_blkno,
- &bh, OCFS2_BH_CACHED, inode);
+ status = ocfs2_read_inode_block(inode, &bh);
if (status < 0) {
mlog_errno(status);
goto bail;
}
fe = (struct ocfs2_dinode *) bh->b_data;
- if (!OCFS2_IS_VALID_DINODE(fe)) {
- mlog(ML_ERROR, "Invalid dinode #%llu: signature = %.*s\n",
- (unsigned long long)le64_to_cpu(fe->i_blkno), 7,
- fe->i_signature);
- goto bail;
- }
-
if ((u64)iblock >= ocfs2_clusters_to_blocks(inode->i_sb,
le32_to_cpu(fe->i_clusters))) {
mlog(ML_ERROR, "block offset is outside the allocated size: "
err = 0;
bail:
- if (bh)
- brelse(bh);
+ brelse(bh);
mlog_exit(err);
return err;
{
int err = 0;
unsigned int ext_flags;
- u64 p_blkno, past_eof;
+ u64 max_blocks = bh_result->b_size >> inode->i_blkbits;
+ u64 p_blkno, count, past_eof;
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
mlog_entry("(0x%p, %llu, 0x%p, %d)\n", inode,
goto bail;
}
- err = ocfs2_extent_map_get_blocks(inode, iblock, &p_blkno, NULL,
+ err = ocfs2_extent_map_get_blocks(inode, iblock, &p_blkno, &count,
&ext_flags);
if (err) {
mlog(ML_ERROR, "Error %d from get_blocks(0x%p, %llu, 1, "
goto bail;
}
+ if (max_blocks < count)
+ count = max_blocks;
+
/*
* ocfs2 never allocates in this function - the only time we
* need to use BH_New is when we're extending i_size on a file
* system which doesn't support holes, in which case BH_New
* allows block_prepare_write() to zero.
+ *
+ * If we see this on a sparse file system, then a truncate has
+ * raced us and removed the cluster. In this case, we clear
+ * the buffers dirty and uptodate bits and let the buffer code
+ * ignore it as a hole.
*/
- mlog_bug_on_msg(create && p_blkno == 0 && ocfs2_sparse_alloc(osb),
- "ino %lu, iblock %llu\n", inode->i_ino,
- (unsigned long long)iblock);
+ if (create && p_blkno == 0 && ocfs2_sparse_alloc(osb)) {
+ clear_buffer_dirty(bh_result);
+ clear_buffer_uptodate(bh_result);
+ goto bail;
+ }
/* Treat the unwritten extent as a hole for zeroing purposes. */
if (p_blkno && !(ext_flags & OCFS2_EXT_UNWRITTEN))
map_bh(bh_result, inode->i_sb, p_blkno);
+ bh_result->b_size = count << inode->i_blkbits;
+
if (!ocfs2_sparse_alloc(osb)) {
if (p_blkno == 0) {
err = -EIO;
struct buffer_head *di_bh)
{
void *kaddr;
- unsigned int size;
+ loff_t size;
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
if (!(le16_to_cpu(di->i_dyn_features) & OCFS2_INLINE_DATA_FL)) {
size = i_size_read(inode);
if (size > PAGE_CACHE_SIZE ||
- size > ocfs2_max_inline_data(inode->i_sb)) {
+ size > ocfs2_max_inline_data_with_xattr(inode->i_sb, di)) {
ocfs2_error(inode->i_sb,
- "Inode %llu has with inline data has bad size: %u",
- (unsigned long long)OCFS2_I(inode)->ip_blkno, size);
+ "Inode %llu has with inline data has bad size: %Lu",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (unsigned long long)size);
return -EROFS;
}
{
int ret;
struct buffer_head *di_bh = NULL;
- struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
BUG_ON(!PageLocked(page));
- BUG_ON(!OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL);
+ BUG_ON(!(OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL));
- ret = ocfs2_read_block(osb, OCFS2_I(inode)->ip_blkno, &di_bh,
- OCFS2_BH_CACHED, inode);
+ ret = ocfs2_read_inode_block(inode, &di_bh);
if (ret) {
mlog_errno(ret);
goto out;
mlog_entry("(0x%p, %lu)\n", file, (page ? page->index : 0));
- ret = ocfs2_meta_lock_with_page(inode, NULL, 0, page);
+ ret = ocfs2_inode_lock_with_page(inode, NULL, 0, page);
if (ret != 0) {
if (ret == AOP_TRUNCATED_PAGE)
unlock = 0;
if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
ret = AOP_TRUNCATED_PAGE;
- goto out_meta_unlock;
+ goto out_inode_unlock;
}
/*
* XXX sys_readahead() seems to get that wrong?
*/
if (start >= i_size_read(inode)) {
- zero_user_page(page, 0, PAGE_SIZE, KM_USER0);
+ zero_user(page, 0, PAGE_SIZE);
SetPageUptodate(page);
ret = 0;
goto out_alloc;
}
- ret = ocfs2_data_lock_with_page(inode, 0, page);
- if (ret != 0) {
- if (ret == AOP_TRUNCATED_PAGE)
- unlock = 0;
- mlog_errno(ret);
- goto out_alloc;
- }
-
if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
ret = ocfs2_readpage_inline(inode, page);
else
ret = block_read_full_page(page, ocfs2_get_block);
unlock = 0;
- ocfs2_data_unlock(inode, 0);
out_alloc:
up_read(&OCFS2_I(inode)->ip_alloc_sem);
-out_meta_unlock:
- ocfs2_meta_unlock(inode, 0);
+out_inode_unlock:
+ ocfs2_inode_unlock(inode, 0);
out:
if (unlock)
unlock_page(page);
return ret;
}
+/*
+ * This is used only for read-ahead. Failures or difficult to handle
+ * situations are safe to ignore.
+ *
+ * Right now, we don't bother with BH_Boundary - in-inode extent lists
+ * are quite large (243 extents on 4k blocks), so most inodes don't
+ * grow out to a tree. If need be, detecting boundary extents could
+ * trivially be added in a future version of ocfs2_get_block().
+ */
+static int ocfs2_readpages(struct file *filp, struct address_space *mapping,
+ struct list_head *pages, unsigned nr_pages)
+{
+ int ret, err = -EIO;
+ struct inode *inode = mapping->host;
+ struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ loff_t start;
+ struct page *last;
+
+ /*
+ * Use the nonblocking flag for the dlm code to avoid page
+ * lock inversion, but don't bother with retrying.
+ */
+ ret = ocfs2_inode_lock_full(inode, NULL, 0, OCFS2_LOCK_NONBLOCK);
+ if (ret)
+ return err;
+
+ if (down_read_trylock(&oi->ip_alloc_sem) == 0) {
+ ocfs2_inode_unlock(inode, 0);
+ return err;
+ }
+
+ /*
+ * Don't bother with inline-data. There isn't anything
+ * to read-ahead in that case anyway...
+ */
+ if (oi->ip_dyn_features & OCFS2_INLINE_DATA_FL)
+ goto out_unlock;
+
+ /*
+ * Check whether a remote node truncated this file - we just
+ * drop out in that case as it's not worth handling here.
+ */
+ last = list_entry(pages->prev, struct page, lru);
+ start = (loff_t)last->index << PAGE_CACHE_SHIFT;
+ if (start >= i_size_read(inode))
+ goto out_unlock;
+
+ err = mpage_readpages(mapping, pages, nr_pages, ocfs2_get_block);
+
+out_unlock:
+ up_read(&oi->ip_alloc_sem);
+ ocfs2_inode_unlock(inode, 0);
+
+ return err;
+}
+
/* Note: Because we don't support holes, our allocation has
* already happened (allocation writes zeros to the file data)
* so we don't have to worry about ordered writes in
unsigned to)
{
struct ocfs2_super *osb = OCFS2_SB(inode->i_sb);
- handle_t *handle = NULL;
+ handle_t *handle;
int ret = 0;
handle = ocfs2_start_trans(osb, OCFS2_INODE_UPDATE_CREDITS);
- if (!handle) {
+ if (IS_ERR(handle)) {
ret = -ENOMEM;
mlog_errno(ret);
goto out;
}
if (ocfs2_should_order_data(inode)) {
- ret = walk_page_buffers(handle,
- page_buffers(page),
- from, to, NULL,
- ocfs2_journal_dirty_data);
- if (ret < 0)
+ ret = ocfs2_jbd2_file_inode(handle, inode);
+ if (ret < 0)
mlog_errno(ret);
}
out:
if (ret) {
- if (handle)
+ if (!IS_ERR(handle))
ocfs2_commit_trans(osb, handle);
handle = ERR_PTR(ret);
}
* accessed concurrently from multiple nodes.
*/
if (!INODE_JOURNAL(inode)) {
- err = ocfs2_meta_lock(inode, NULL, 0);
+ err = ocfs2_inode_lock(inode, NULL, 0);
if (err) {
if (err != -ENOENT)
mlog_errno(err);
if (!INODE_JOURNAL(inode)) {
up_read(&OCFS2_I(inode)->ip_alloc_sem);
- ocfs2_meta_unlock(inode, 0);
+ ocfs2_inode_unlock(inode, 0);
}
if (err) {
goto bail;
}
- if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)) && !p_blkno) {
+ if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb)) && !p_blkno && create) {
ocfs2_error(inode->i_sb,
"Inode %llu has a hole at block %llu\n",
(unsigned long long)OCFS2_I(inode)->ip_blkno,
{
journal_t *journal = OCFS2_SB(page->mapping->host->i_sb)->journal->j_journal;
- journal_invalidatepage(journal, page, offset);
+ jbd2_journal_invalidatepage(journal, page, offset);
}
static int ocfs2_releasepage(struct page *page, gfp_t wait)
if (!page_has_buffers(page))
return 0;
- return journal_try_to_free_buffers(journal, page, wait);
+ return jbd2_journal_try_to_free_buffers(journal, page, wait);
}
static ssize_t ocfs2_direct_IO(int rw,
if (OCFS2_I(inode)->ip_dyn_features & OCFS2_INLINE_DATA_FL)
return 0;
- if (!ocfs2_sparse_alloc(OCFS2_SB(inode->i_sb))) {
- /*
- * We get PR data locks even for O_DIRECT. This
- * allows concurrent O_DIRECT I/O but doesn't let
- * O_DIRECT with extending and buffered zeroing writes
- * race. If they did race then the buffered zeroing
- * could be written back after the O_DIRECT I/O. It's
- * one thing to tell people not to mix buffered and
- * O_DIRECT writes, but expecting them to understand
- * that file extension is also an implicit buffered
- * write is too much. By getting the PR we force
- * writeback of the buffered zeroing before
- * proceeding.
- */
- ret = ocfs2_data_lock(inode, 0);
- if (ret < 0) {
- mlog_errno(ret);
- goto out;
- }
- ocfs2_data_unlock(inode, 0);
- }
-
ret = blockdev_direct_IO_no_locking(rw, iocb, inode,
inode->i_sb->s_bdev, iov, offset,
nr_segs,
ocfs2_direct_IO_get_blocks,
ocfs2_dio_end_io);
-out:
+
mlog_exit(ret);
return ret;
}
if (block_start >= to)
break;
- zero_user_page(page, block_start, bh->b_size, KM_USER0);
+ zero_user(page, block_start, bh->b_size);
set_buffer_uptodate(bh);
mark_buffer_dirty(bh);
start = max(from, block_start);
end = min(to, block_end);
- zero_user_page(page, start, end - start, KM_USER0);
+ zero_user_segment(page, start, end);
set_buffer_uptodate(bh);
}
for(i = 0; i < wc->w_num_pages; i++) {
tmppage = wc->w_pages[i];
- if (ocfs2_should_order_data(inode))
- walk_page_buffers(wc->w_handle, page_buffers(tmppage),
- from, to, NULL,
- ocfs2_journal_dirty_data);
+ if (page_has_buffers(tmppage)) {
+ if (ocfs2_should_order_data(inode))
+ ocfs2_jbd2_file_inode(wc->w_handle, inode);
- block_commit_write(tmppage, from, to);
+ block_commit_write(tmppage, from, to);
+ }
}
}
int ret, i, new, should_zero = 0;
u64 v_blkno, p_blkno;
struct inode *inode = mapping->host;
+ struct ocfs2_extent_tree et;
new = phys == 0 ? 1 : 0;
if (new || unwritten)
* any additional semaphores or cluster locks.
*/
tmp_pos = cpos;
- ret = ocfs2_do_extend_allocation(OCFS2_SB(inode->i_sb), inode,
- &tmp_pos, 1, 0, wc->w_di_bh,
- wc->w_handle, data_ac,
- meta_ac, NULL);
+ ret = ocfs2_add_inode_data(OCFS2_SB(inode->i_sb), inode,
+ &tmp_pos, 1, 0, wc->w_di_bh,
+ wc->w_handle, data_ac,
+ meta_ac, NULL);
/*
* This shouldn't happen because we must have already
* calculated the correct meta data allocation required. The
goto out;
}
} else if (unwritten) {
- ret = ocfs2_mark_extent_written(inode, wc->w_di_bh,
+ ocfs2_init_dinode_extent_tree(&et, inode, wc->w_di_bh);
+ ret = ocfs2_mark_extent_written(inode, &et,
wc->w_handle, cpos, 1, phys,
meta_ac, &wc->w_dealloc);
if (ret < 0) {
goto out;
}
- ret = ocfs2_journal_access(handle, inode, wc->w_di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, wc->w_di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
ocfs2_commit_trans(osb, handle);
{
struct ocfs2_dinode *di = (struct ocfs2_dinode *)di_bh->b_data;
- if (new_size < le16_to_cpu(di->id2.i_data.id_count))
+ if (new_size <= le16_to_cpu(di->id2.i_data.id_count))
return 1;
return 0;
}
int ret, written = 0;
loff_t end = pos + len;
struct ocfs2_inode_info *oi = OCFS2_I(inode);
+ struct ocfs2_dinode *di = NULL;
mlog(0, "Inode %llu, write of %u bytes at off %llu. features: 0x%x\n",
(unsigned long long)oi->ip_blkno, len, (unsigned long long)pos,
/*
* Check whether the write can fit.
*/
- if (mmap_page || end > ocfs2_max_inline_data(inode->i_sb))
+ di = (struct ocfs2_dinode *)wc->w_di_bh->b_data;
+ if (mmap_page ||
+ end > ocfs2_max_inline_data_with_xattr(inode->i_sb, di))
return 0;
do_inline_write:
struct ocfs2_alloc_context *data_ac = NULL;
struct ocfs2_alloc_context *meta_ac = NULL;
handle_t *handle;
+ struct ocfs2_extent_tree et;
ret = ocfs2_alloc_write_ctxt(&wc, osb, pos, len, di_bh);
if (ret) {
* ocfs2_lock_allocators(). It greatly over-estimates
* the work to be done.
*/
- ret = ocfs2_lock_allocators(inode, di, clusters_to_alloc,
- extents_to_split, &data_ac, &meta_ac);
+ mlog(0, "extend inode %llu, i_size = %lld, di->i_clusters = %u,"
+ " clusters_to_add = %u, extents_to_split = %u\n",
+ (unsigned long long)OCFS2_I(inode)->ip_blkno,
+ (long long)i_size_read(inode), le32_to_cpu(di->i_clusters),
+ clusters_to_alloc, extents_to_split);
+
+ ocfs2_init_dinode_extent_tree(&et, inode, wc->w_di_bh);
+ ret = ocfs2_lock_allocators(inode, &et,
+ clusters_to_alloc, extents_to_split,
+ &data_ac, &meta_ac);
if (ret) {
mlog_errno(ret);
goto out;
}
- credits = ocfs2_calc_extend_credits(inode->i_sb, di,
+ credits = ocfs2_calc_extend_credits(inode->i_sb,
+ &di->id2.i_list,
clusters_to_alloc);
}
wc->w_handle = handle;
+ if (clusters_to_alloc && vfs_dq_alloc_space_nodirty(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_alloc))) {
+ ret = -EDQUOT;
+ goto out_commit;
+ }
/*
* We don't want this to fail in ocfs2_write_end(), so do it
* here.
*/
- ret = ocfs2_journal_access(handle, inode, wc->w_di_bh,
- OCFS2_JOURNAL_ACCESS_WRITE);
+ ret = ocfs2_journal_access_di(handle, inode, wc->w_di_bh,
+ OCFS2_JOURNAL_ACCESS_WRITE);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out_quota;
}
/*
mmap_page);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out_quota;
}
ret = ocfs2_write_cluster_by_desc(mapping, data_ac, meta_ac, wc, pos,
len);
if (ret) {
mlog_errno(ret);
- goto out_commit;
+ goto out_quota;
}
if (data_ac)
*pagep = wc->w_target_page;
*fsdata = wc;
return 0;
+out_quota:
+ if (clusters_to_alloc)
+ vfs_dq_free_space(inode,
+ ocfs2_clusters_to_bytes(osb->sb, clusters_to_alloc));
out_commit:
ocfs2_commit_trans(osb, handle);
struct buffer_head *di_bh = NULL;
struct inode *inode = mapping->host;
- ret = ocfs2_meta_lock(inode, &di_bh, 1);
+ ret = ocfs2_inode_lock(inode, &di_bh, 1);
if (ret) {
mlog_errno(ret);
return ret;
*/
down_write(&OCFS2_I(inode)->ip_alloc_sem);
- ret = ocfs2_data_lock(inode, 1);
- if (ret) {
- mlog_errno(ret);
- goto out_fail;
- }
-
ret = ocfs2_write_begin_nolock(mapping, pos, len, flags, pagep,
fsdata, di_bh, NULL);
if (ret) {
mlog_errno(ret);
- goto out_fail_data;
+ goto out_fail;
}
brelse(di_bh);
return 0;
-out_fail_data:
- ocfs2_data_unlock(inode, 1);
out_fail:
up_write(&OCFS2_I(inode)->ip_alloc_sem);
brelse(di_bh);
- ocfs2_meta_unlock(inode, 1);
+ ocfs2_inode_unlock(inode, 1);
return ret;
}
to = PAGE_CACHE_SIZE;
}
- if (ocfs2_should_order_data(inode))
- walk_page_buffers(wc->w_handle, page_buffers(tmppage),
- from, to, NULL,
- ocfs2_journal_dirty_data);
-
- block_commit_write(tmppage, from, to);
+ if (page_has_buffers(tmppage)) {
+ if (ocfs2_should_order_data(inode))
+ ocfs2_jbd2_file_inode(wc->w_handle, inode);
+ block_commit_write(tmppage, from, to);
+ }
}
out_write_size:
ret = ocfs2_write_end_nolock(mapping, pos, len, copied, page, fsdata);
- ocfs2_data_unlock(inode, 1);
up_write(&OCFS2_I(inode)->ip_alloc_sem);
- ocfs2_meta_unlock(inode, 1);
+ ocfs2_inode_unlock(inode, 1);
return ret;
}
const struct address_space_operations ocfs2_aops = {
.readpage = ocfs2_readpage,
+ .readpages = ocfs2_readpages,
.writepage = ocfs2_writepage,
.write_begin = ocfs2_write_begin,
.write_end = ocfs2_write_end,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff