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authorChristoph Hellwig <hch@lst.de>2010-06-14 22:42:49 +0400
committerTheodore Ts'o <tytso@mit.edu>2010-06-14 22:42:49 +0400
commit206f7ab4f49a2021fcb8687f25395be77711ddee (patch)
tree19764d36a25ec1e088d32572a1c0936eeaf19636 /fs/ext4/ext4_jbd2.h
parent5a0790c2c4a18435759a70e1562450035d778339 (diff)
downloadlinux-206f7ab4f49a2021fcb8687f25395be77711ddee.tar.xz
ext4: remove vestiges of nobh support
The nobh option was only supported for writeback mode, but given that all write paths actually create buffer heads it effectively was a no-op already. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'fs/ext4/ext4_jbd2.h')
-rw-r--r--fs/ext4/ext4_jbd2.h10
1 files changed, 4 insertions, 6 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 8ae8168900bf..38d1e66e5843 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -313,17 +313,15 @@ static inline int ext4_should_writeback_data(struct inode *inode)
* This function controls whether or not we should try to go down the
* dioread_nolock code paths, which makes it safe to avoid taking
* i_mutex for direct I/O reads. This only works for extent-based
- * files, and it doesn't work for nobh or if data journaling is
- * enabled, since the dioread_nolock code uses b_private to pass
- * information back to the I/O completion handler, and this conflicts
- * with the jbd's use of b_private.
+ * files, and it doesn't work if data journaling is enabled, since the
+ * dioread_nolock code uses b_private to pass information back to the
+ * I/O completion handler, and this conflicts with the jbd's use of
+ * b_private.
*/
static inline int ext4_should_dioread_nolock(struct inode *inode)
{
if (!test_opt(inode->i_sb, DIOREAD_NOLOCK))
return 0;
- if (test_opt(inode->i_sb, NOBH))
- return 0;
if (!S_ISREG(inode->i_mode))
return 0;
if (!(ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS)))