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Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Browse Source 
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (43 commits)
  ext4: fix a BUG in mb_mark_used during trim.
  ext4: unused variables cleanup in fs/ext4/extents.c
  ext4: remove redundant set_buffer_mapped() in ext4_da_get_block_prep()
  ext4: add more tracepoints and use dev_t in the trace buffer
  ext4: don't kfree uninitialized s_group_info members
  ext4: add missing space in printk's in __ext4_grp_locked_error()
  ext4: add FITRIM to compat_ioctl.
  ext4: handle errors in ext4_clear_blocks()
  ext4: unify the ext4_handle_release_buffer() api
  ext4: handle errors in ext4_rename
  jbd2: add COW fields to struct jbd2_journal_handle
  jbd2: add the b_cow_tid field to journal_head struct
  ext4: Initialize fsync transaction ids in ext4_new_inode()
  ext4: Use single thread to perform DIO unwritten convertion
  ext4: optimize ext4_bio_write_page() when no extent conversion is needed
  ext4: skip orphan cleanup if fs has unknown ROCOMPAT features
  ext4: use the nblocks arg to ext4_truncate_restart_trans()
  ext4: fix missing iput of root inode for some mount error paths
  ext4: make FIEMAP and delayed allocation play well together
  ext4: suppress verbose debugging information if malloc-debug is off
  ...

Fi up conflicts in fs/ext4/super.c due to workqueue changes
This commit is contained in:
Linus Torvalds
2011-03-25 09:57:40 -07:00
parent 3961cdf85b 0ba0851714
commit ae005cbed1
21 changed files with 1306 additions and 598 deletions
Download Patch File Download Diff File Expand all files Collapse all files

408
fs/ext4/inode.c
View File

@ -173,7 +173,7 @@ int ext4_truncate_restart_trans(handle_t *handle, struct inode *inode,
BUG_ON(EXT4_JOURNAL(inode) == NULL);
jbd_debug(2, "restarting handle %p\n", handle);
up_write(&EXT4_I(inode)->i_data_sem);
ret = ext4_journal_restart(handle, blocks_for_truncate(inode));
ret = ext4_journal_restart(handle, nblocks);
down_write(&EXT4_I(inode)->i_data_sem);
ext4_discard_preallocations(inode);
@ -720,7 +720,7 @@ allocated:
return ret;
failed_out:
for (i = 0; i < index; i++)
ext4_free_blocks(handle, inode, 0, new_blocks[i], 1, 0);
ext4_free_blocks(handle, inode, NULL, new_blocks[i], 1, 0);
return ret;
}
@ -823,20 +823,20 @@ static int ext4_alloc_branch(handle_t *handle, struct inode *inode,
return err;
failed:
/* Allocation failed, free what we already allocated */
ext4_free_blocks(handle, inode, 0, new_blocks[0], 1, 0);
ext4_free_blocks(handle, inode, NULL, new_blocks[0], 1, 0);
for (i = 1; i <= n ; i++) {
/*
* branch[i].bh is newly allocated, so there is no
* need to revoke the block, which is why we don't
* need to set EXT4_FREE_BLOCKS_METADATA.
*/
ext4_free_blocks(handle, inode, 0, new_blocks[i], 1,
ext4_free_blocks(handle, inode, NULL, new_blocks[i], 1,
EXT4_FREE_BLOCKS_FORGET);
}
for (i = n+1; i < indirect_blks; i++)
ext4_free_blocks(handle, inode, 0, new_blocks[i], 1, 0);
ext4_free_blocks(handle, inode, NULL, new_blocks[i], 1, 0);
ext4_free_blocks(handle, inode, 0, new_blocks[i], num, 0);
ext4_free_blocks(handle, inode, NULL, new_blocks[i], num, 0);
return err;
}
@ -924,7 +924,7 @@ err_out:
ext4_free_blocks(handle, inode, where[i].bh, 0, 1,
EXT4_FREE_BLOCKS_FORGET);
}
ext4_free_blocks(handle, inode, 0, le32_to_cpu(where[num].key),
ext4_free_blocks(handle, inode, NULL, le32_to_cpu(where[num].key),
blks, 0);
return err;
@ -973,6 +973,7 @@ static int ext4_ind_map_blocks(handle_t *handle, struct inode *inode,
int count = 0;
ext4_fsblk_t first_block = 0;
trace_ext4_ind_map_blocks_enter(inode, map->m_lblk, map->m_len, flags);
J_ASSERT(!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)));
J_ASSERT(handle != NULL || (flags & EXT4_GET_BLOCKS_CREATE) == 0);
depth = ext4_block_to_path(inode, map->m_lblk, offsets,
@ -1058,6 +1059,8 @@ cleanup:
partial--;
}
out:
trace_ext4_ind_map_blocks_exit(inode, map->m_lblk,
map->m_pblk, map->m_len, err);
return err;
}
@ -2060,7 +2063,7 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
if (nr_pages == 0)
break;
for (i = 0; i < nr_pages; i++) {
int commit_write = 0, redirty_page = 0;
int commit_write = 0, skip_page = 0;
struct page *page = pvec.pages[i];
index = page->index;
@ -2086,14 +2089,12 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
* If the page does not have buffers (for
* whatever reason), try to create them using
* __block_write_begin. If this fails,
* redirty the page and move on.
* skip the page and move on.
*/
if (!page_has_buffers(page)) {
if (__block_write_begin(page, 0, len,
noalloc_get_block_write)) {
redirty_page:
redirty_page_for_writepage(mpd->wbc,
page);
skip_page:
unlock_page(page);
continue;
}
@ -2104,7 +2105,7 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
block_start = 0;
do {
if (!bh)
goto redirty_page;
goto skip_page;
if (map && (cur_logical >= map->m_lblk) &&
(cur_logical <= (map->m_lblk +
(map->m_len - 1)))) {
@ -2120,22 +2121,23 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
clear_buffer_unwritten(bh);
}
/* redirty page if block allocation undone */
/* skip page if block allocation undone */
if (buffer_delay(bh) || buffer_unwritten(bh))
redirty_page = 1;
skip_page = 1;
bh = bh->b_this_page;
block_start += bh->b_size;
cur_logical++;
pblock++;
} while (bh != page_bufs);
if (redirty_page)
goto redirty_page;
if (skip_page)
goto skip_page;
if (commit_write)
/* mark the buffer_heads as dirty & uptodate */
block_commit_write(page, 0, len);
clear_page_dirty_for_io(page);
/*
* Delalloc doesn't support data journalling,
* but eventually maybe we'll lift this
@ -2165,8 +2167,7 @@ static int mpage_da_submit_io(struct mpage_da_data *mpd,
return ret;
}
static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
sector_t logical, long blk_cnt)
static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd)
{
int nr_pages, i;
pgoff_t index, end;
@ -2174,9 +2175,8 @@ static void ext4_da_block_invalidatepages(struct mpage_da_data *mpd,
struct inode *inode = mpd->inode;
struct address_space *mapping = inode->i_mapping;
index = logical >> (PAGE_CACHE_SHIFT - inode->i_blkbits);
end = (logical + blk_cnt - 1) >>
(PAGE_CACHE_SHIFT - inode->i_blkbits);
index = mpd->first_page;
end = mpd->next_page - 1;
while (index <= end) {
nr_pages = pagevec_lookup(&pvec, mapping, index, PAGEVEC_SIZE);
if (nr_pages == 0)
@ -2279,9 +2279,8 @@ static void mpage_da_map_and_submit(struct mpage_da_data *mpd)
err = blks;
/*
* If get block returns EAGAIN or ENOSPC and there
* appears to be free blocks we will call
* ext4_writepage() for all of the pages which will
* just redirty the pages.
* appears to be free blocks we will just let
* mpage_da_submit_io() unlock all of the pages.
*/
if (err == -EAGAIN)
goto submit_io;
@ -2312,8 +2311,10 @@ static void mpage_da_map_and_submit(struct mpage_da_data *mpd)
ext4_print_free_blocks(mpd->inode);
}
/* invalidate all the pages */
ext4_da_block_invalidatepages(mpd, next,
mpd->b_size >> mpd->inode->i_blkbits);
ext4_da_block_invalidatepages(mpd);
/* Mark this page range as having been completed */
mpd->io_done = 1;
return;
}
BUG_ON(blks == 0);
@ -2437,102 +2438,6 @@ static int ext4_bh_delay_or_unwritten(handle_t *handle, struct buffer_head *bh)
return (buffer_delay(bh) || buffer_unwritten(bh)) && buffer_dirty(bh);
}
/*
* __mpage_da_writepage - finds extent of pages and blocks
*
* @page: page to consider
* @wbc: not used, we just follow rules
* @data: context
*
* The function finds extents of pages and scan them for all blocks.
*/
static int __mpage_da_writepage(struct page *page,
struct writeback_control *wbc,
struct mpage_da_data *mpd)
{
struct inode *inode = mpd->inode;
struct buffer_head *bh, *head;
sector_t logical;
/*
* Can we merge this page to current extent?
*/
if (mpd->next_page != page->index) {
/*
* Nope, we can't. So, we map non-allocated blocks
* and start IO on them
*/
if (mpd->next_page != mpd->first_page) {
mpage_da_map_and_submit(mpd);
/*
* skip rest of the page in the page_vec
*/
redirty_page_for_writepage(wbc, page);
unlock_page(page);
return MPAGE_DA_EXTENT_TAIL;
}
/*
* Start next extent of pages ...
*/
mpd->first_page = page->index;
/*
* ... and blocks
*/
mpd->b_size = 0;
mpd->b_state = 0;
mpd->b_blocknr = 0;
}
mpd->next_page = page->index + 1;
logical = (sector_t) page->index <<
(PAGE_CACHE_SHIFT - inode->i_blkbits);
if (!page_has_buffers(page)) {
mpage_add_bh_to_extent(mpd, logical, PAGE_CACHE_SIZE,
(1 << BH_Dirty) | (1 << BH_Uptodate));
if (mpd->io_done)
return MPAGE_DA_EXTENT_TAIL;
} else {
/*
* Page with regular buffer heads, just add all dirty ones
*/
head = page_buffers(page);
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_writepage
*/
if (ext4_bh_delay_or_unwritten(NULL, bh)) {
mpage_add_bh_to_extent(mpd, logical,
bh->b_size,
bh->b_state);
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->b_size == 0)
mpd->b_state = bh->b_state & BH_FLAGS;
}
logical++;
} while ((bh = bh->b_this_page) != head);
}
return 0;
}
/*
* This is a special get_blocks_t callback which is used by
* ext4_da_write_begin(). It will either return mapped block or
@ -2597,7 +2502,6 @@ static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
* for partial write.
*/
set_buffer_new(bh);
set_buffer_mapped(bh);
}
return 0;
}
@ -2811,27 +2715,27 @@ static int ext4_da_writepages_trans_blocks(struct inode *inode)
/*
* write_cache_pages_da - walk the list of dirty pages of the given
* address space and call the callback function (which usually writes
* the pages).
*
* This is a forked version of write_cache_pages(). Differences:
* Range cyclic is ignored.
* no_nrwrite_index_update is always presumed true
* address space and accumulate pages that need writing, and call
* mpage_da_map_and_submit to map a single contiguous memory region
* and then write them.
*/
static int write_cache_pages_da(struct address_space *mapping,
struct writeback_control *wbc,
struct mpage_da_data *mpd,
pgoff_t *done_index)
{
int ret = 0;
int done = 0;
struct pagevec pvec;
unsigned nr_pages;
pgoff_t index;
pgoff_t end; /* Inclusive */
long nr_to_write = wbc->nr_to_write;
int tag;
struct buffer_head *bh, *head;
struct inode *inode = mapping->host;
struct pagevec pvec;
unsigned int nr_pages;
sector_t logical;
pgoff_t index, end;
long nr_to_write = wbc->nr_to_write;
int i, tag, ret = 0;
memset(mpd, 0, sizeof(struct mpage_da_data));
mpd->wbc = wbc;
mpd->inode = inode;
pagevec_init(&pvec, 0);
index = wbc->range_start >> PAGE_CACHE_SHIFT;
end = wbc->range_end >> PAGE_CACHE_SHIFT;
@ -2842,13 +2746,11 @@ static int write_cache_pages_da(struct address_space *mapping,
tag = PAGECACHE_TAG_DIRTY;
*done_index = index;
while (!done && (index <= end)) {
int i;
while (index <= end) {
nr_pages = pagevec_lookup_tag(&pvec, mapping, &index, tag,
min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1);
if (nr_pages == 0)
break;
return 0;
for (i = 0; i < nr_pages; i++) {
struct page *page = pvec.pages[i];
@ -2860,60 +2762,100 @@ static int write_cache_pages_da(struct address_space *mapping,
* mapping. However, page->index will not change
* because we have a reference on the page.
*/
if (page->index > end) {
done = 1;
break;
}
if (page->index > end)
goto out;
*done_index = page->index + 1;
/*
* If we can't merge this page, and we have
* accumulated an contiguous region, write it
*/
if ((mpd->next_page != page->index) &&
(mpd->next_page != mpd->first_page)) {
mpage_da_map_and_submit(mpd);
goto ret_extent_tail;
}
lock_page(page);
/*
* Page truncated or invalidated. We can freely skip it
* then, even for data integrity operations: the page
* has disappeared concurrently, so there could be no
* real expectation of this data interity operation
* even if there is now a new, dirty page at the same
* pagecache address.
* If the page is no longer dirty, or its
* mapping no longer corresponds to inode we
* are writing (which means it has been
* truncated or invalidated), or the page is
* already under writeback and we are not
* doing a data integrity writeback, skip the page
*/
if (unlikely(page->mapping != mapping)) {
continue_unlock:
if (!PageDirty(page) ||
(PageWriteback(page) &&
(wbc->sync_mode == WB_SYNC_NONE)) ||
unlikely(page->mapping != mapping)) {
unlock_page(page);
continue;
}
if (!PageDirty(page)) {
/* someone wrote it for us */
goto continue_unlock;
}
if (PageWriteback(page)) {
if (wbc->sync_mode != WB_SYNC_NONE)
wait_on_page_writeback(page);
else
goto continue_unlock;
}
if (PageWriteback(page))
wait_on_page_writeback(page);
BUG_ON(PageWriteback(page));
if (!clear_page_dirty_for_io(page))
goto continue_unlock;
ret = __mpage_da_writepage(page, wbc, mpd);
if (unlikely(ret)) {
if (ret == AOP_WRITEPAGE_ACTIVATE) {
unlock_page(page);
ret = 0;
} else {
done = 1;
break;
}
if (mpd->next_page != page->index)
mpd->first_page = page->index;
mpd->next_page = page->index + 1;
logical = (sector_t) page->index <<
(PAGE_CACHE_SHIFT - inode->i_blkbits);
if (!page_has_buffers(page)) {
mpage_add_bh_to_extent(mpd, logical,
PAGE_CACHE_SIZE,
(1 << BH_Dirty) | (1 << BH_Uptodate));
if (mpd->io_done)
goto ret_extent_tail;
} else {
/*
* Page with regular buffer heads,
* just add all dirty ones
*/
head = page_buffers(page);
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_writepage
*/
if (ext4_bh_delay_or_unwritten(NULL, bh)) {
mpage_add_bh_to_extent(mpd, logical,
bh->b_size,
bh->b_state);
if (mpd->io_done)
goto ret_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->b_size == 0)
mpd->b_state = bh->b_state & BH_FLAGS;
}
logical++;
} while ((bh = bh->b_this_page) != head);
}
if (nr_to_write > 0) {
nr_to_write--;
if (nr_to_write == 0 &&
wbc->sync_mode == WB_SYNC_NONE) {
wbc->sync_mode == WB_SYNC_NONE)
/*
* We stop writing back only if we are
* not doing integrity sync. In case of
@ -2924,14 +2866,18 @@ continue_unlock:
* pages, but have not synced all of the
* old dirty pages.
*/
done = 1;
break;
}
goto out;
}
}
pagevec_release(&pvec);
cond_resched();
}
return 0;
ret_extent_tail:
ret = MPAGE_DA_EXTENT_TAIL;
out:
pagevec_release(&pvec);
cond_resched();
return ret;
}
@ -2945,7 +2891,6 @@ static int ext4_da_writepages(struct address_space *mapping,
struct mpage_da_data mpd;
struct inode *inode = mapping->host;
int pages_written = 0;
long pages_skipped;
unsigned int max_pages;
int range_cyclic, cycled = 1, io_done = 0;
int needed_blocks, ret = 0;
@ -3028,11 +2973,6 @@ static int ext4_da_writepages(struct address_space *mapping,
wbc->nr_to_write = desired_nr_to_write;
}
mpd.wbc = wbc;
mpd.inode = mapping->host;
pages_skipped = wbc->pages_skipped;
retry:
if (wbc->sync_mode == WB_SYNC_ALL)
tag_pages_for_writeback(mapping, index, end);
@ -3059,22 +2999,10 @@ retry:
}
/*
* Now call __mpage_da_writepage to find the next
* Now call write_cache_pages_da() to find the next
* contiguous region of logical blocks that need
* blocks to be allocated by ext4. We don't actually
* submit the blocks for I/O here, even though
* write_cache_pages thinks it will, and will set the
* pages as clean for write before calling
* __mpage_da_writepage().
* blocks to be allocated by ext4 and submit them.
*/
mpd.b_size = 0;
mpd.b_state = 0;
mpd.b_blocknr = 0;
mpd.first_page = 0;
mpd.next_page = 0;
mpd.io_done = 0;
mpd.pages_written = 0;
mpd.retval = 0;
ret = write_cache_pages_da(mapping, wbc, &mpd, &done_index);
/*
* If we have a contiguous extent of pages and we
@ -3096,7 +3024,6 @@ retry:
* and try again
*/
jbd2_journal_force_commit_nested(sbi->s_journal);
wbc->pages_skipped = pages_skipped;
ret = 0;
} else if (ret == MPAGE_DA_EXTENT_TAIL) {
/*
@ -3104,7 +3031,6 @@ retry:
* rest of the pages
*/
pages_written += mpd.pages_written;
wbc->pages_skipped = pages_skipped;
ret = 0;
io_done = 1;
} else if (wbc->nr_to_write)
@ -3122,11 +3048,6 @@ retry:
wbc->range_end = mapping->writeback_index - 1;
goto retry;
}
if (pages_skipped != wbc->pages_skipped)
ext4_msg(inode->i_sb, KERN_CRIT,
"This should not happen leaving %s "
"with nr_to_write = %ld ret = %d",
__func__, wbc->nr_to_write, ret);
/* Update index */
wbc->range_cyclic = range_cyclic;
@ -3460,6 +3381,7 @@ static sector_t ext4_bmap(struct address_space *mapping, sector_t block)
static int ext4_readpage(struct file *file, struct page *page)
{
trace_ext4_readpage(page);
return mpage_readpage(page, ext4_get_block);
}
@ -3494,6 +3416,8 @@ static void ext4_invalidatepage(struct page *page, unsigned long offset)
{
journal_t *journal = EXT4_JOURNAL(page->mapping->host);
trace_ext4_invalidatepage(page, offset);
/*
* free any io_end structure allocated for buffers to be discarded
*/
@ -3515,6 +3439,8 @@ static int ext4_releasepage(struct page *page, gfp_t wait)
{
journal_t *journal = EXT4_JOURNAL(page->mapping->host);
trace_ext4_releasepage(page);
WARN_ON(PageChecked(page));
if (!page_has_buffers(page))
return 0;
@ -3873,11 +3799,16 @@ static ssize_t ext4_direct_IO(int rw, struct kiocb *iocb,
{
struct file *file = iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
ssize_t ret;
trace_ext4_direct_IO_enter(inode, offset, iov_length(iov, nr_segs), rw);
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS))
return ext4_ext_direct_IO(rw, iocb, iov, offset, nr_segs);
return ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs);
ret = ext4_ext_direct_IO(rw, iocb, iov, offset, nr_segs);
else
ret = ext4_ind_direct_IO(rw, iocb, iov, offset, nr_segs);
trace_ext4_direct_IO_exit(inode, offset,
iov_length(iov, nr_segs), rw, ret);
return ret;
}
/*
@ -4173,6 +4104,9 @@ no_top:
*
* We release `count' blocks on disk, but (last - first) may be greater
* than `count' because there can be holes in there.
*
* Return 0 on success, 1 on invalid block range
* and < 0 on fatal error.
*/
static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
struct buffer_head *bh,
@ -4199,33 +4133,32 @@ static int ext4_clear_blocks(handle_t *handle, struct inode *inode,
if (bh) {
BUFFER_TRACE(bh, "call ext4_handle_dirty_metadata");
err = ext4_handle_dirty_metadata(handle, inode, bh);
if (unlikely(err)) {
ext4_std_error(inode->i_sb, err);
return 1;
}
if (unlikely(err))
goto out_err;
}
err = ext4_mark_inode_dirty(handle, inode);
if (unlikely(err)) {
ext4_std_error(inode->i_sb, err);
return 1;
}
if (unlikely(err))
goto out_err;
err = ext4_truncate_restart_trans(handle, inode,
blocks_for_truncate(inode));
if (unlikely(err)) {
ext4_std_error(inode->i_sb, err);
return 1;
}
if (unlikely(err))
goto out_err;
if (bh) {
BUFFER_TRACE(bh, "retaking write access");
ext4_journal_get_write_access(handle, bh);
err = ext4_journal_get_write_access(handle, bh);
if (unlikely(err))
goto out_err;
}
}
for (p = first; p < last; p++)
*p = 0;
ext4_free_blocks(handle, inode, 0, block_to_free, count, flags);
ext4_free_blocks(handle, inode, NULL, block_to_free, count, flags);
return 0;
out_err:
ext4_std_error(inode->i_sb, err);
return err;
}
/**
@ -4259,7 +4192,7 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
ext4_fsblk_t nr; /* Current block # */
__le32 *p; /* Pointer into inode/ind
for current block */
int err;
int err = 0;
if (this_bh) { /* For indirect block */
BUFFER_TRACE(this_bh, "get_write_access");
@ -4281,9 +4214,10 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
} else if (nr == block_to_free + count) {
count++;
} else {
if (ext4_clear_blocks(handle, inode, this_bh,
block_to_free, count,
block_to_free_p, p))
err = ext4_clear_blocks(handle, inode, this_bh,
block_to_free, count,
block_to_free_p, p);
if (err)
break;
block_to_free = nr;
block_to_free_p = p;
@ -4292,9 +4226,12 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
}
}
if (count > 0)
ext4_clear_blocks(handle, inode, this_bh, block_to_free,
count, block_to_free_p, p);
if (!err && count > 0)
err = ext4_clear_blocks(handle, inode, this_bh, block_to_free,
count, block_to_free_p, p);
if (err < 0)
/* fatal error */
return;
if (this_bh) {
BUFFER_TRACE(this_bh, "call ext4_handle_dirty_metadata");
@ -4412,7 +4349,7 @@ static void ext4_free_branches(handle_t *handle, struct inode *inode,
* transaction where the data blocks are
* actually freed.
*/
ext4_free_blocks(handle, inode, 0, nr, 1,
ext4_free_blocks(handle, inode, NULL, nr, 1,
EXT4_FREE_BLOCKS_METADATA|
EXT4_FREE_BLOCKS_FORGET);
@ -4496,6 +4433,8 @@ void ext4_truncate(struct inode *inode)
ext4_lblk_t last_block;
unsigned blocksize = inode->i_sb->s_blocksize;
trace_ext4_truncate_enter(inode);
if (!ext4_can_truncate(inode))
return;
@ -4506,6 +4445,7 @@ void ext4_truncate(struct inode *inode)
if (ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)) {
ext4_ext_truncate(inode);
trace_ext4_truncate_exit(inode);
return;
}
@ -4635,6 +4575,7 @@ out_stop:
ext4_orphan_del(handle, inode);
ext4_journal_stop(handle);
trace_ext4_truncate_exit(inode);
}
/*
@ -4766,6 +4707,7 @@ make_io:
* has in-inode xattrs, or we don't have this inode in memory.
* Read the block from disk.
*/
trace_ext4_load_inode(inode);
get_bh(bh);
bh->b_end_io = end_buffer_read_sync;
submit_bh(READ_META, bh);
@ -4871,7 +4813,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
return inode;
ei = EXT4_I(inode);
iloc.bh = 0;
iloc.bh = NULL;
ret = __ext4_get_inode_loc(inode, &iloc, 0);
if (ret < 0)