Move xen patchset to new version's subdir.

[people/pmueller/ipfire-2.x.git] / src / patches / suse-2.6.27.25 / patches.fixes / ext4-clear-unwritten-flag-after-extent-initialization

diff --git a/src/patches/suse-2.6.27.25/patches.fixes/ext4-clear-unwritten-flag-after-extent-initialization b/src/patches/suse-2.6.27.25/patches.fixes/ext4-clear-unwritten-flag-after-extent-initialization
deleted file mode 100644 (file)
index 3c0bcb2..0000000
--- a/src/patches/suse-2.6.27.25/patches.fixes/ext4-clear-unwritten-flag-after-extent-initialization
+++ /dev/null
@@ -1,59 +0,0 @@
-From: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
-Date: Thu, 14 May 2009 21:05:39 +0000 (-0400)
-Subject: ext4: Clear the unwritten buffer_head flag after the extent is initialized
-Patch-mainline: 2.6.30-rc6
-Git-commit: 2a8964d63d50dd2d65d71d342bc7fb6ef4117614
-References: bnc#503161
-
-ext4: Clear the unwritten buffer_head flag after the extent is initialized
-
-The BH_Unwritten flag indicates that the buffer is allocated on disk
-but has not been written; that is, the disk was part of a persistent
-preallocation area.  That flag should only be set when a get_blocks()
-function is looking up a inode's logical to physical block mapping.
-
-When ext4_get_blocks_wrap() is called with create=1, the uninitialized
-extent is converted into an initialized one, so the BH_Unwritten flag
-is no longer appropriate.  Hence, we need to make sure the
-BH_Unwritten is not left set, since the combination of BH_Mapped and
-BH_Unwritten is not allowed; among other things, it will result ext4's
-get_block() to be called over and over again during the write_begin
-phase of write(2).
-
-Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
-Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
-Acked-by: Jeff Mahoney <jeffm@suse.com>
----
-
- fs/ext4/inode.c |   13 +++++++++++++
- 1 file changed, 13 insertions(+)
-
---- a/fs/ext4/inode.c
-+++ b/fs/ext4/inode.c
-@@ -1058,6 +1058,7 @@ int ext4_get_blocks_wrap(handle_t *handl
-       int retval;
- 
-       clear_buffer_mapped(bh);
-+      clear_buffer_unwritten(bh);
- 
-       /*
-        * Try to see if we can get  the block without requesting
-@@ -1088,6 +1089,18 @@ int ext4_get_blocks_wrap(handle_t *handl
-               return retval;
- 
-       /*
-+       * When we call get_blocks without the create flag, the
-+       * BH_Unwritten flag could have gotten set if the blocks
-+       * requested were part of a uninitialized extent.  We need to
-+       * clear this flag now that we are committed to convert all or
-+       * part of the uninitialized extent to be an initialized
-+       * extent.  This is because we need to avoid the combination
-+       * of BH_Unwritten and BH_Mapped flags being simultaneously
-+       * set on the buffer_head.
-+       */
-+      clear_buffer_unwritten(bh);
-+
-+      /*
-        * New blocks allocate and/or writing to uninitialized extent
-        * will possibly result in updating i_data, so we take
-        * the write lock of i_data_sem, and call get_blocks()