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7dfbcbe xfs: fallback to vmalloc for large buffers in xfs_compat_attrlist_by_handle
dd700d9 xfs: fallback to vmalloc for large buffers in xfs_attrlist_by_handle
742ae1e xfs: introduce CONFIG_XFS_WARN
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commit 7dfbcbefad4b24d9822d04dbd7b5dd5c3fd45076
Author: Eric Sandeen <sandeen@xxxxxxxxxxx>
Date: Thu Apr 25 11:13:06 2013 -0500
xfs: fallback to vmalloc for large buffers in xfs_compat_attrlist_by_handle
Shamelessly copied from dchinner's:
ad650f5b xfs: fallback to vmalloc for large buffers in xfs_attrmulti_attr_get
xfsdump uses a large buffer for extended attributes, which has a
kmalloc'd shadow buffer in the kernel. This can fail after the
system has been running for some time as it is a high order
allocation. Add a fallback to vmalloc so that it doesn't require
contiguous memory and so won't randomly fail while xfsdump is
running.
This was done for xfs_attrlist_by_handle but
xfs_compat_attrlist_by_handle (the 32-bit version) needs the same
attention.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit dd700d9452023a5b6820815a88f93c8f7010c270
Author: Eric Sandeen <sandeen@xxxxxxxxxx>
Date: Thu Apr 4 00:05:13 2013 -0500
xfs: fallback to vmalloc for large buffers in xfs_attrlist_by_handle
Shamelessly copied from dchinner's:
ad650f5b xfs: fallback to vmalloc for large buffers in xfs_attrmulti_attr_get
xfsdump uses for a large buffer for extended attributes, which has a
kmalloc'd shadow buffer in the kernel. This can fail after the
system has been running for some time as it is a high order
allocation. Add a fallback to vmalloc so that it doesn't require
contiguous memory and so won't randomly fail while xfsdump is
running.
Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
Reviewed-by: Mark Tinguely <tinguely@xxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
commit 742ae1e35b038ed65ddd86182723441ea74db765
Author: Dave Chinner <dchinner@xxxxxxxxxx>
Date: Tue Apr 30 21:39:34 2013 +1000
xfs: introduce CONFIG_XFS_WARN
Running a CONFIG_XFS_DEBUG kernel in production environments is not
the best idea as it introduces significant overhead, can change
the behaviour of algorithms (such as allocation) to improve test
coverage, and (most importantly) panic the machine on non-fatal
errors.
There are many cases where all we want to do is run a
kernel with more bounds checking enabled, such as is provided by the
ASSERT() statements throughout the code, but without all the
potential overhead and drawbacks.
This patch converts all the ASSERT statements to evaluate as
WARN_ON(1) statements and hence if they fail dump a warning and a
stack trace to the log. This has minimal overhead and does not
change any algorithms, and will allow us to find strange "out of
bounds" problems more easily on production machines.
There are a few places where assert statements contain debug only
code. These are converted to be debug-or-warn only code so that we
still get all the assert checks in the code.
Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
Reviewed-by: Brian Foster <bfoster@xxxxxxxxxx>
Signed-off-by: Ben Myers <bpm@xxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
fs/xfs/Kconfig | 13 +++++++++++++
fs/xfs/mrlock.h | 12 ++++++------
fs/xfs/xfs.h | 5 +++++
fs/xfs/xfs_alloc_btree.c | 4 ++--
fs/xfs/xfs_bmap_btree.c | 4 ++--
fs/xfs/xfs_btree.h | 2 +-
fs/xfs/xfs_dir2_node.c | 4 ++--
fs/xfs/xfs_ialloc_btree.c | 4 ++--
fs/xfs/xfs_inode.c | 2 +-
fs/xfs/xfs_ioctl.c | 14 ++++++++++----
fs/xfs/xfs_ioctl32.c | 14 ++++++++++----
fs/xfs/xfs_linux.h | 24 ++++++++++++++++++------
fs/xfs/xfs_message.c | 8 ++++++++
fs/xfs/xfs_message.h | 1 +
fs/xfs/xfs_trans.h | 4 ++--
15 files changed, 83 insertions(+), 32 deletions(-)
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