Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  ext2/3/4: delete unneeded includes of module.h
  ext{3,4}: Fix potential race when setversion ioctl updates inode
  udf: Mark LVID buffer as uptodate before marking it dirty
  ext3: Don't warn from writepage when readonly inode is spotted after error
  jbd: Remove j_barrier mutex
  reiserfs: Force inode evictions before umount to avoid crash
  reiserfs: Fix quota mount option parsing
  udf: Treat symlink component of type 2 as /
  udf: Fix deadlock when converting file from in-ICB one to normal one
  udf: Cleanup calling convention of inode_getblk()
  ext2: Fix error handling on inode bitmap corruption
  ext3: Fix error handling on inode bitmap corruption
  ext3: replace ll_rw_block with other functions
  ext3: NULL dereference in ext3_evict_inode()
  jbd: clear revoked flag on buffers before a new transaction started
  ext3: call ext3_mark_recovery_complete() when recovery is really needed

1 files changed, 32 insertions, 11 deletions

diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c
index 15cb47088aac..2d0afeca0b47 100644
--- a/fs/ext3/inode.c
+++ b/fs/ext3/inode.c
@@ -22,7 +22,6 @@
  *  Assorted race fixes, rewrite of ext3_get_block() by Al Viro, 2000
  */
 
-#include <linux/module.h>
 #include <linux/fs.h>
 #include <linux/time.h>
 #include <linux/ext3_jbd.h>
@@ -223,8 +222,12 @@ void ext3_evict_inode (struct inode *inode)
          *
          * Note that directories do not have this problem because they don't
          * use page cache.
+         *
+         * The s_journal check handles the case when ext3_get_journal() fails
+         * and puts the journal inode.
          */
         if (inode->i_nlink && ext3_should_journal_data(inode) &&
+            EXT3_SB(inode->i_sb)->s_journal &&
             (S_ISLNK(inode->i_mode) || S_ISREG(inode->i_mode))) {
                 tid_t commit_tid = atomic_read(&ei->i_datasync_tid);
                 journal_t *journal = EXT3_SB(inode->i_sb)->s_journal;
@@ -1132,9 +1135,11 @@ struct buffer_head *ext3_bread(handle_t *handle, struct inode *inode,
         bh = ext3_getblk(handle, inode, block, create, err);
         if (!bh)
                 return bh;
-        if (buffer_uptodate(bh))
+        if (bh_uptodate_or_lock(bh))
                 return bh;
-        ll_rw_block(READ | REQ_META | REQ_PRIO, 1, &bh);
+        get_bh(bh);
+        bh->b_end_io = end_buffer_read_sync;
+        submit_bh(READ | REQ_META | REQ_PRIO, bh);
         wait_on_buffer(bh);
         if (buffer_uptodate(bh))
                 return bh;
@@ -1617,7 +1622,13 @@ static int ext3_ordered_writepage(struct page *page,
         int err;
 
         J_ASSERT(PageLocked(page));
-        WARN_ON_ONCE(IS_RDONLY(inode));
+        /*
+         * We don't want to warn for emergency remount. The condition is
+         * ordered to avoid dereferencing inode->i_sb in non-error case to
+         * avoid slow-downs.
+         */
+        WARN_ON_ONCE(IS_RDONLY(inode) &&
+                     !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS));
 
         /*
          * We give up here if we're reentered, because it might be for a
@@ -1692,7 +1703,13 @@ static int ext3_writeback_writepage(struct page *page,
         int err;
 
         J_ASSERT(PageLocked(page));
-        WARN_ON_ONCE(IS_RDONLY(inode));
+        /*
+         * We don't want to warn for emergency remount. The condition is
+         * ordered to avoid dereferencing inode->i_sb in non-error case to
+         * avoid slow-downs.
+         */
+        WARN_ON_ONCE(IS_RDONLY(inode) &&
+                     !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS));
 
         if (ext3_journal_current_handle())
                 goto out_fail;
@@ -1735,7 +1752,13 @@ static int ext3_journalled_writepage(struct page *page,
         int err;
 
         J_ASSERT(PageLocked(page));
-        WARN_ON_ONCE(IS_RDONLY(inode));
+        /*
+         * We don't want to warn for emergency remount. The condition is
+         * ordered to avoid dereferencing inode->i_sb in non-error case to
+         * avoid slow-downs.
+         */
+        WARN_ON_ONCE(IS_RDONLY(inode) &&
+                     !(EXT3_SB(inode->i_sb)->s_mount_state & EXT3_ERROR_FS));
 
         if (ext3_journal_current_handle())
                 goto no_write;
@@ -2064,12 +2087,10 @@ static int ext3_block_truncate_page(struct inode *inode, loff_t from)
         if (PageUptodate(page))
                 set_buffer_uptodate(bh);
 
-        if (!buffer_uptodate(bh)) {
-                err = -EIO;
-                ll_rw_block(READ, 1, &bh);
-                wait_on_buffer(bh);
+        if (!bh_uptodate_or_lock(bh)) {
+                err = bh_submit_read(bh);
                 /* Uhhuh. Read error. Complain and punt. */
-                if (!buffer_uptodate(bh))
+                if (err)
                         goto unlock;
         }