* "bh" may be NULL: a metadata block may have been freed from memory
* but there may still be a record of it in the journal, and that record
* still needs to be revoked.
+ *
+ * If the handle isn't valid we're not journaling so there's nothing to do.
*/
int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
struct buffer_head *bh, ext4_fsblk_t blocknr)
{
int err;
+ if (!ext4_handle_valid(handle))
+ return 0;
+
might_sleep();
BUFFER_TRACE(bh, "enter");
*/
static int try_to_extend_transaction(handle_t *handle, struct inode *inode)
{
- if (handle->h_buffer_credits > EXT4_RESERVE_TRANS_BLOCKS)
+ if (!ext4_handle_valid(handle))
+ return 0;
+ if (ext4_handle_has_enough_credits(handle, EXT4_RESERVE_TRANS_BLOCKS+1))
return 0;
if (!ext4_journal_extend(handle, blocks_for_truncate(inode)))
return 0;
*/
static int ext4_journal_test_restart(handle_t *handle, struct inode *inode)
{
+ BUG_ON(EXT4_JOURNAL(inode) == NULL);
jbd_debug(2, "restarting handle %p\n", handle);
return ext4_journal_restart(handle, blocks_for_truncate(inode));
}
}
if (IS_SYNC(inode))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
inode->i_size = 0;
err = ext4_mark_inode_dirty(handle, inode);
if (err) {
* enough credits left in the handle to remove the inode from
* the orphan list and set the dtime field.
*/
- if (handle->h_buffer_credits < 3) {
+ if (!ext4_handle_has_enough_credits(handle, 3)) {
err = ext4_journal_extend(handle, 3);
if (err > 0)
err = ext4_journal_restart(handle, 3);
* return the total number of blocks to be allocate, including the
* direct and indirect blocks.
*/
-static int ext4_blks_to_allocate(Indirect *branch, int k, unsigned long blks,
+static int ext4_blks_to_allocate(Indirect *branch, int k, unsigned int blks,
int blocks_to_boundary)
{
- unsigned long count = 0;
+ unsigned int count = 0;
/*
* Simple case, [t,d]Indirect block(s) has not allocated yet
int indirect_blks, int blks,
ext4_fsblk_t new_blocks[4], int *err)
{
+ struct ext4_allocation_request ar;
int target, i;
unsigned long count = 0, blk_allocated = 0;
int index = 0;
if (!target)
goto allocated;
/* Now allocate data blocks */
- count = target;
- /* allocating blocks for data blocks */
- current_block = ext4_new_blocks(handle, inode, iblock,
- goal, &count, err);
+ memset(&ar, 0, sizeof(ar));
+ ar.inode = inode;
+ ar.goal = goal;
+ ar.len = target;
+ ar.logical = iblock;
+ if (S_ISREG(inode->i_mode))
+ /* enable in-core preallocation only for regular files */
+ ar.flags = EXT4_MB_HINT_DATA;
+
+ current_block = ext4_mb_new_blocks(handle, &ar, err);
+
if (*err && (target == blks)) {
/*
* if the allocation failed and we didn't allocate
*/
new_blocks[index] = current_block;
}
- blk_allocated += count;
+ blk_allocated += ar.len;
}
allocated:
/* total number of blocks allocated for direct blocks */
set_buffer_uptodate(bh);
unlock_buffer(bh);
- BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
- err = ext4_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+ err = ext4_handle_dirty_metadata(handle, inode, bh);
if (err)
goto failed;
}
* generic_commit_write->__mark_inode_dirty->ext4_dirty_inode.
*/
jbd_debug(5, "splicing indirect only\n");
- BUFFER_TRACE(where->bh, "call ext4_journal_dirty_metadata");
- err = ext4_journal_dirty_metadata(handle, where->bh);
+ BUFFER_TRACE(where->bh, "call ext4_handle_dirty_metadata");
+ err = ext4_handle_dirty_metadata(handle, inode, where->bh);
if (err)
goto err_out;
} else {
* down_read(&EXT4_I(inode)->i_data_sem) if not allocating file system block
* (ie, create is zero). Otherwise down_write(&EXT4_I(inode)->i_data_sem)
*/
-int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
- ext4_lblk_t iblock, unsigned long maxblocks,
- struct buffer_head *bh_result,
- int create, int extend_disksize)
+static int ext4_get_blocks_handle(handle_t *handle, struct inode *inode,
+ ext4_lblk_t iblock, unsigned int maxblocks,
+ struct buffer_head *bh_result,
+ int create, int extend_disksize)
{
int err = -EIO;
ext4_lblk_t offsets[4];
* It returns the error in case of allocation failure.
*/
int ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
- unsigned long max_blocks, struct buffer_head *bh,
+ unsigned int max_blocks, struct buffer_head *bh,
int create, int extend_disksize, int flag)
{
int retval;
set_buffer_uptodate(bh);
}
unlock_buffer(bh);
- BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
- err = ext4_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+ err = ext4_handle_dirty_metadata(handle, inode, bh);
if (!fatal)
fatal = err;
} else {
pgoff_t index;
unsigned from, to;
+ trace_mark(ext4_write_begin,
+ "dev %s ino %lu pos %llu len %u flags %u",
+ inode->i_sb->s_id, inode->i_ino,
+ (unsigned long long) pos, len, flags);
index = pos >> PAGE_CACHE_SHIFT;
from = pos & (PAGE_CACHE_SIZE - 1);
to = from + len;
if (!buffer_mapped(bh) || buffer_freed(bh))
return 0;
set_buffer_uptodate(bh);
- return ext4_journal_dirty_metadata(handle, bh);
+ return ext4_handle_dirty_metadata(handle, NULL, bh);
}
/*
struct inode *inode = mapping->host;
int ret = 0, ret2;
+ trace_mark(ext4_ordered_write_end,
+ "dev %s ino %lu pos %llu len %u copied %u",
+ inode->i_sb->s_id, inode->i_ino,
+ (unsigned long long) pos, len, copied);
ret = ext4_jbd2_file_inode(handle, inode);
if (ret == 0) {
int ret = 0, ret2;
loff_t new_i_size;
+ trace_mark(ext4_writeback_write_end,
+ "dev %s ino %lu pos %llu len %u copied %u",
+ inode->i_sb->s_id, inode->i_ino,
+ (unsigned long long) pos, len, copied);
new_i_size = pos + copied;
if (new_i_size > EXT4_I(inode)->i_disksize) {
ext4_update_i_disksize(inode, new_i_size);
unsigned from, to;
loff_t new_i_size;
+ trace_mark(ext4_journalled_write_end,
+ "dev %s ino %lu pos %llu len %u copied %u",
+ inode->i_sb->s_id, inode->i_ino,
+ (unsigned long long) pos, len, copied);
from = pos & (PAGE_CACHE_SIZE - 1);
to = from + len;
get_block_t *get_block;
struct writeback_control *wbc;
int io_done;
- long pages_written;
+ int pages_written;
int retval;
};
*/
static int mpage_da_submit_io(struct mpage_da_data *mpd)
{
- struct address_space *mapping = mpd->inode->i_mapping;
- int ret = 0, err, nr_pages, i;
- unsigned long index, end;
- struct pagevec pvec;
long pages_skipped;
+ struct pagevec pvec;
+ unsigned long index, end;
+ int ret = 0, err, nr_pages, i;
+ struct inode *inode = mpd->inode;
+ struct address_space *mapping = inode->i_mapping;
BUG_ON(mpd->next_page <= mpd->first_page);
- pagevec_init(&pvec, 0);
+ /*
+ * We need to start from the first_page to the next_page - 1
+ * to make sure we also write the mapped dirty buffer_heads.
+ * If we look at mpd->lbh.b_blocknr we would only be looking
+ * at the currently mapped buffer_heads.
+ */
index = mpd->first_page;
end = mpd->next_page - 1;
+ pagevec_init(&pvec, 0);
while (index <= end) {
- /*
- * We can use PAGECACHE_TAG_DIRTY lookup here because
- * even though we have cleared the dirty flag on the page
- * We still keep the page in the radix tree with tag
- * PAGECACHE_TAG_DIRTY. See clear_page_dirty_for_io.
- * The PAGECACHE_TAG_DIRTY is cleared in set_page_writeback
- * which is called via the below writepage callback.
- */
- nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
- PAGECACHE_TAG_DIRTY,
- min(end - index,
- (pgoff_t)PAGEVEC_SIZE-1) + 1);
+ nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
if (nr_pages == 0)
break;
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
+ index = page->index;
+ if (index > end)
+ break;
+ index++;
+
+ BUG_ON(!PageLocked(page));
+ BUG_ON(PageWriteback(page));
+
pages_skipped = mpd->wbc->pages_skipped;
err = mapping->a_ops->writepage(page, mpd->wbc);
if (!err && (pages_skipped == mpd->wbc->pages_skipped))
ext4_count_free_blocks(inode->i_sb));
printk(KERN_EMERG "Free/Dirty block details\n");
printk(KERN_EMERG "free_blocks=%lld\n",
- percpu_counter_sum(&sbi->s_freeblocks_counter));
+ (long long)percpu_counter_sum(&sbi->s_freeblocks_counter));
printk(KERN_EMERG "dirty_blocks=%lld\n",
- percpu_counter_sum(&sbi->s_dirtyblocks_counter));
+ (long long)percpu_counter_sum(&sbi->s_dirtyblocks_counter));
printk(KERN_EMERG "Block reservation details\n");
- printk(KERN_EMERG "i_reserved_data_blocks=%lu\n",
+ printk(KERN_EMERG "i_reserved_data_blocks=%u\n",
EXT4_I(inode)->i_reserved_data_blocks);
- printk(KERN_EMERG "i_reserved_meta_blocks=%lu\n",
+ printk(KERN_EMERG "i_reserved_meta_blocks=%u\n",
EXT4_I(inode)->i_reserved_meta_blocks);
return;
}
bh = head;
do {
BUG_ON(buffer_locked(bh));
+ /*
+ * We need to try to allocate
+ * unmapped blocks in the same page.
+ * Otherwise we won't make progress
+ * with the page in ext4_da_writepage
+ */
if (buffer_dirty(bh) &&
(!buffer_mapped(bh) || buffer_delay(bh))) {
mpage_add_bh_to_extent(mpd, logical, bh);
if (mpd->io_done)
return MPAGE_DA_EXTENT_TAIL;
+ } else if (buffer_dirty(bh) && (buffer_mapped(bh))) {
+ /*
+ * mapped dirty buffer. We need to update
+ * the b_state because we look at
+ * b_state in mpage_da_map_blocks. We don't
+ * update b_size because if we find an
+ * unmapped buffer_head later we need to
+ * use the b_state flag of that buffer_head.
+ */
+ if (mpd->lbh.b_size == 0)
+ mpd->lbh.b_state =
+ bh->b_state & BH_FLAGS;
}
logical++;
} while ((bh = bh->b_this_page) != head);
{
int ret = 0;
loff_t size;
- unsigned long len;
+ unsigned int len;
struct buffer_head *page_bufs;
struct inode *inode = page->mapping->host;
+ trace_mark(ext4_da_writepage,
+ "dev %s ino %lu page_index %lu",
+ inode->i_sb->s_id, inode->i_ino, page->index);
size = i_size_read(inode);
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
struct mpage_da_data mpd;
struct inode *inode = mapping->host;
int no_nrwrite_index_update;
- long pages_written = 0, pages_skipped;
+ int pages_written = 0;
+ long pages_skipped;
int needed_blocks, ret = 0, nr_to_writebump = 0;
struct ext4_sb_info *sbi = EXT4_SB(mapping->host->i_sb);
+ trace_mark(ext4_da_writepages,
+ "dev %s ino %lu nr_t_write %ld "
+ "pages_skipped %ld range_start %llu "
+ "range_end %llu nonblocking %d "
+ "for_kupdate %d for_reclaim %d "
+ "for_writepages %d range_cyclic %d",
+ inode->i_sb->s_id, inode->i_ino,
+ wbc->nr_to_write, wbc->pages_skipped,
+ (unsigned long long) wbc->range_start,
+ (unsigned long long) wbc->range_end,
+ wbc->nonblocking, wbc->for_kupdate,
+ wbc->for_reclaim, wbc->for_writepages,
+ wbc->range_cyclic);
+
/*
* No pages to write? This is mainly a kludge to avoid starting
* a transaction for special inodes like journal inode on last iput()
*/
if (!mapping->nrpages || !mapping_tagged(mapping, PAGECACHE_TAG_DIRTY))
return 0;
+
+ /*
+ * If the filesystem has aborted, it is read-only, so return
+ * right away instead of dumping stack traces later on that
+ * will obscure the real source of the problem. We test
+ * EXT4_MOUNT_ABORT instead of sb->s_flag's MS_RDONLY because
+ * the latter could be true if the filesystem is mounted
+ * read-only, and in that case, ext4_da_writepages should
+ * *never* be called, so if that ever happens, we would want
+ * the stack trace.
+ */
+ if (unlikely(sbi->s_mount_opt & EXT4_MOUNT_ABORT))
+ return -EROFS;
+
/*
* Make sure nr_to_write is >= sbi->s_mb_stream_request
* This make sure small files blocks are allocated in
handle = ext4_journal_start(inode, needed_blocks);
if (IS_ERR(handle)) {
ret = PTR_ERR(handle);
- printk(KERN_EMERG "%s: jbd2_start: "
+ printk(KERN_CRIT "%s: jbd2_start: "
"%ld pages, ino %lu; err %d\n", __func__,
wbc->nr_to_write, inode->i_ino, ret);
dump_stack();
if (!no_nrwrite_index_update)
wbc->no_nrwrite_index_update = 0;
wbc->nr_to_write -= nr_to_writebump;
+ trace_mark(ext4_da_writepage_result,
+ "dev %s ino %lu ret %d pages_written %d "
+ "pages_skipped %ld congestion %d "
+ "more_io %d no_nrwrite_index_update %d",
+ inode->i_sb->s_id, inode->i_ino, ret,
+ pages_written, wbc->pages_skipped,
+ wbc->encountered_congestion, wbc->more_io,
+ wbc->no_nrwrite_index_update);
return ret;
}
len, flags, pagep, fsdata);
}
*fsdata = (void *)0;
+
+ trace_mark(ext4_da_write_begin,
+ "dev %s ino %lu pos %llu len %u flags %u",
+ inode->i_sb->s_id, inode->i_ino,
+ (unsigned long long) pos, len, flags);
retry:
/*
* With delayed allocation, we don't log the i_disksize update
}
}
+ trace_mark(ext4_da_write_end,
+ "dev %s ino %lu pos %llu len %u copied %u",
+ inode->i_sb->s_id, inode->i_ino,
+ (unsigned long long) pos, len, copied);
start = pos & (PAGE_CACHE_SIZE - 1);
end = start + copied - 1;
filemap_write_and_wait(mapping);
}
- if (EXT4_I(inode)->i_state & EXT4_STATE_JDATA) {
+ BUG_ON(!EXT4_JOURNAL(inode) &&
+ EXT4_I(inode)->i_state & EXT4_STATE_JDATA);
+
+ if (EXT4_JOURNAL(inode) && EXT4_I(inode)->i_state & EXT4_STATE_JDATA) {
/*
* This is a REALLY heavyweight approach, but the use of
* bmap on dirty files is expected to be extremely rare:
loff_t size = i_size_read(inode);
loff_t len;
+ trace_mark(ext4_normal_writepage,
+ "dev %s ino %lu page_index %lu",
+ inode->i_sb->s_id, inode->i_ino, page->index);
J_ASSERT(PageLocked(page));
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
loff_t size = i_size_read(inode);
loff_t len;
+ trace_mark(ext4_journalled_writepage,
+ "dev %s ino %lu page_index %lu",
+ inode->i_sb->s_id, inode->i_ino, page->index);
J_ASSERT(PageLocked(page));
if (page->index == size >> PAGE_CACHE_SHIFT)
len = size & ~PAGE_CACHE_MASK;
if (offset == 0)
ClearPageChecked(page);
- jbd2_journal_invalidatepage(journal, page, offset);
+ if (journal)
+ jbd2_journal_invalidatepage(journal, page, offset);
+ else
+ block_invalidatepage(page, offset);
}
static int ext4_releasepage(struct page *page, gfp_t wait)
WARN_ON(PageChecked(page));
if (!page_has_buffers(page))
return 0;
- return jbd2_journal_try_to_free_buffers(journal, page, wait);
+ if (journal)
+ return jbd2_journal_try_to_free_buffers(journal, page, wait);
+ else
+ return try_to_free_buffers(page);
}
/*
err = 0;
if (ext4_should_journal_data(inode)) {
- err = ext4_journal_dirty_metadata(handle, bh);
+ err = ext4_handle_dirty_metadata(handle, inode, bh);
} else {
if (ext4_should_order_data(inode))
err = ext4_jbd2_file_inode(handle, inode);
__le32 *p;
if (try_to_extend_transaction(handle, inode)) {
if (bh) {
- BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
- ext4_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+ ext4_handle_dirty_metadata(handle, inode, bh);
}
ext4_mark_inode_dirty(handle, inode);
ext4_journal_test_restart(handle, inode);
count, block_to_free_p, p);
if (this_bh) {
- BUFFER_TRACE(this_bh, "call ext4_journal_dirty_metadata");
+ BUFFER_TRACE(this_bh, "call ext4_handle_dirty_metadata");
/*
* The buffer head should have an attached journal head at this
* the block was cleared. Check for this instead of OOPSing.
*/
if (bh2jh(this_bh))
- ext4_journal_dirty_metadata(handle, this_bh);
+ ext4_handle_dirty_metadata(handle, inode, this_bh);
else
ext4_error(inode->i_sb, __func__,
"circular indirect block detected, "
ext4_fsblk_t nr;
__le32 *p;
- if (is_handle_aborted(handle))
+ if (ext4_handle_is_aborted(handle))
return;
if (depth--) {
* will merely complain about releasing a free block,
* rather than leaking blocks.
*/
- if (is_handle_aborted(handle))
+ if (ext4_handle_is_aborted(handle))
return;
if (try_to_extend_transaction(handle, inode)) {
ext4_mark_inode_dirty(handle, inode);
parent_bh)){
*p = 0;
BUFFER_TRACE(parent_bh,
- "call ext4_journal_dirty_metadata");
- ext4_journal_dirty_metadata(handle,
- parent_bh);
+ "call ext4_handle_dirty_metadata");
+ ext4_handle_dirty_metadata(handle,
+ inode,
+ parent_bh);
}
}
}
* synchronous
*/
if (IS_SYNC(inode))
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
out_stop:
/*
* If this was a simple ftruncate(), and the file will remain alive
ext4_fsblk_t block;
int inodes_per_block, inode_offset;
- iloc->bh = 0;
+ iloc->bh = NULL;
if (!ext4_valid_inum(sb, inode->i_ino))
return -EIO;
num = EXT4_INODES_PER_GROUP(sb);
if (EXT4_HAS_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_GDT_CSUM))
- num -= le16_to_cpu(gdp->bg_itable_unused);
+ num -= ext4_itable_unused_count(sb, gdp);
table += num / inodes_per_block;
if (end > table)
end = table;
EXT4_SET_RO_COMPAT_FEATURE(sb,
EXT4_FEATURE_RO_COMPAT_LARGE_FILE);
sb->s_dirt = 1;
- handle->h_sync = 1;
- err = ext4_journal_dirty_metadata(handle,
+ ext4_handle_sync(handle);
+ err = ext4_handle_dirty_metadata(handle, inode,
EXT4_SB(sb)->s_sbh);
}
}
raw_inode->i_extra_isize = cpu_to_le16(ei->i_extra_isize);
}
-
- BUFFER_TRACE(bh, "call ext4_journal_dirty_metadata");
- rc = ext4_journal_dirty_metadata(handle, bh);
+ BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
+ rc = ext4_handle_dirty_metadata(handle, inode, bh);
if (!err)
err = rc;
ei->i_state &= ~EXT4_STATE_NEW;
return ext4_force_commit(inode->i_sb);
}
+int __ext4_write_dirty_metadata(struct inode *inode, struct buffer_head *bh)
+{
+ int err = 0;
+
+ mark_buffer_dirty(bh);
+ if (inode && inode_needs_sync(inode)) {
+ sync_dirty_buffer(bh);
+ if (buffer_req(bh) && !buffer_uptodate(bh)) {
+ ext4_error(inode->i_sb, __func__,
+ "IO error syncing inode, "
+ "inode=%lu, block=%llu",
+ inode->i_ino,
+ (unsigned long long)bh->b_blocknr);
+ err = -EIO;
+ }
+ }
+ return err;
+}
+
/*
* ext4_setattr()
*
ext4_reserve_inode_write(handle_t *handle, struct inode *inode,
struct ext4_iloc *iloc)
{
- int err = 0;
- if (handle) {
- err = ext4_get_inode_loc(inode, iloc);
- if (!err) {
- BUFFER_TRACE(iloc->bh, "get_write_access");
- err = ext4_journal_get_write_access(handle, iloc->bh);
- if (err) {
- brelse(iloc->bh);
- iloc->bh = NULL;
- }
+ int err;
+
+ err = ext4_get_inode_loc(inode, iloc);
+ if (!err) {
+ BUFFER_TRACE(iloc->bh, "get_write_access");
+ err = ext4_journal_get_write_access(handle, iloc->bh);
+ if (err) {
+ brelse(iloc->bh);
+ iloc->bh = NULL;
}
}
ext4_std_error(inode->i_sb, err);
might_sleep();
err = ext4_reserve_inode_write(handle, inode, &iloc);
- if (EXT4_I(inode)->i_extra_isize < sbi->s_want_extra_isize &&
+ if (ext4_handle_valid(handle) &&
+ EXT4_I(inode)->i_extra_isize < sbi->s_want_extra_isize &&
!(EXT4_I(inode)->i_state & EXT4_STATE_NO_EXPAND)) {
/*
* We need extra buffer credits since we may write into EA block
handle_t *current_handle = ext4_journal_current_handle();
handle_t *handle;
+ if (!ext4_handle_valid(current_handle)) {
+ ext4_mark_inode_dirty(current_handle, inode);
+ return;
+ }
+
handle = ext4_journal_start(inode, 2);
if (IS_ERR(handle))
goto out;
BUFFER_TRACE(iloc.bh, "get_write_access");
err = jbd2_journal_get_write_access(handle, iloc.bh);
if (!err)
- err = ext4_journal_dirty_metadata(handle,
- iloc.bh);
+ err = ext4_handle_dirty_metadata(handle,
+ inode,
+ iloc.bh);
brelse(iloc.bh);
}
}
*/
journal = EXT4_JOURNAL(inode);
+ if (!journal)
+ return 0;
if (is_journal_aborted(journal))
return -EROFS;
return PTR_ERR(handle);
err = ext4_mark_inode_dirty(handle, inode);
- handle->h_sync = 1;
+ ext4_handle_sync(handle);
ext4_journal_stop(handle);
ext4_std_error(inode->i_sb, err);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff