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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

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Pull ext4 updates from Ted Ts'o:
 "Fix a number of bugs, most notably a potential stale data exposure
  after a crash and a potential BUG_ON crash if a file has the data
  journalling flag enabled while it has dirty delayed allocation blocks
  that haven't been written yet.  Also fix a potential crash in the new
  project quota code and a maliciously corrupted file system.

  In addition, fix some DAX-specific bugs, including when there is a
  transient ENOSPC situation and races between writes via direct I/O and
  an mmap'ed segment that could lead to lost I/O.

  Finally the usual set of miscellaneous cleanups"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (23 commits)
  ext4: pre-zero allocated blocks for DAX IO
  ext4: refactor direct IO code
  ext4: fix race in transient ENOSPC detection
  ext4: handle transient ENOSPC properly for DAX
  dax: call get_blocks() with create == 1 for write faults to unwritten extents
  ext4: remove unmeetable inconsisteny check from ext4_find_extent()
  jbd2: remove excess descriptions for handle_s
  ext4: remove unnecessary bio get/put
  ext4: silence UBSAN in ext4_mb_init()
  ext4: address UBSAN warning in mb_find_order_for_block()
  ext4: fix oops on corrupted filesystem
  ext4: fix check of dqget() return value in ext4_ioctl_setproject()
  ext4: clean up error handling when orphan list is corrupted
  ext4: fix hang when processing corrupted orphaned inode list
  ext4: remove trailing \n from ext4_warning/ext4_error calls
  ext4: fix races between changing inode journal mode and ext4_writepages
  ext4: handle unwritten or delalloc buffers before enabling data journaling
  ext4: fix jbd2 handle extension in ext4_ext_truncate_extend_restart()
  ext4: do not ask jbd2 to write data for delalloc buffers
  jbd2: add support for avoiding data writes during transaction commits
  ...
This commit is contained in:
Linus Torvalds
2016-05-24 12:55:26 -07:00
parent a56f489502 12735f8819
commit 0e01df100b
28 changed files with 367 additions and 316 deletions
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22
fs/jbd2/transaction.c
View File

@@ -2462,7 +2462,8 @@ void jbd2_journal_refile_buffer(journal_t *journal, struct journal_head *jh)
/*
* File inode in the inode list of the handle's transaction
*/
int jbd2_journal_file_inode(handle_t *handle, struct jbd2_inode *jinode)
static int jbd2_journal_file_inode(handle_t *handle, struct jbd2_inode *jinode,
unsigned long flags)
{
transaction_t *transaction = handle->h_transaction;
journal_t *journal;
@@ -2487,12 +2488,14 @@ int jbd2_journal_file_inode(handle_t *handle, struct jbd2_inode *jinode)
* and if jinode->i_next_transaction == transaction, commit code
* will only file the inode where we want it.
*/
if (jinode->i_transaction == transaction ||
jinode->i_next_transaction == transaction)
if ((jinode->i_transaction == transaction ||
jinode->i_next_transaction == transaction) &&
(jinode->i_flags & flags) == flags)
return 0;
spin_lock(&journal->j_list_lock);
jinode->i_flags |= flags;
/* Is inode already attached where we need it? */
if (jinode->i_transaction == transaction ||
jinode->i_next_transaction == transaction)
goto done;
@@ -2523,6 +2526,17 @@ done:
return 0;
}
int jbd2_journal_inode_add_write(handle_t *handle, struct jbd2_inode *jinode)
{
return jbd2_journal_file_inode(handle, jinode,
JI_WRITE_DATA | JI_WAIT_DATA);
}
int jbd2_journal_inode_add_wait(handle_t *handle, struct jbd2_inode *jinode)
{
return jbd2_journal_file_inode(handle, jinode, JI_WAIT_DATA);
}
/*
* File truncate and transaction commit interact with each other in a
* non-trivial way. If a transaction writing data block A is