12 Oct, 2010
1 commit
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fs/ocfs2/slot_map.c: In function ‘ocfs2_init_slot_info’:
fs/ocfs2/slot_map.c:360: warning: ‘bytes’ may be used uninitialized in this function
fs/ocfs2/slot_map.c:360: note: ‘bytes’ was declared here
Compiler: gcc version 4.4.3 (GCC) on Mandriva
I'm not sure why this warning occurs, I think compiler don't know that variable
"bytes" is initialized when it is sent by reference to
ocfs2_slot_map_physical_size and it throws that ugly warning.
However, a simple initialization of "bytes" variable with 0 will fix it.Signed-off-by: Ionut Gabriel Popescu
Signed-off-by: Joel Becker
05 Sep, 2009
1 commit
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We are really passing the inode into the ocfs2_read/write_blocks()
functions to get at the metadata cache. This commit passes the cache
directly into the metadata block functions, divorcing them from the
inode.Signed-off-by: Joel Becker
06 Jan, 2009
1 commit
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Add an optional validation hook to ocfs2_read_blocks(). Now the
validation function is only called when a block was actually read off of
disk. It is not called when the buffer was in cache.We add a buffer state bit BH_NeedsValidate to flag these buffers. It
must always be one higher than the last JBD2 buffer state bit.The dinode, dirblock, extent_block, and xattr_block validators are
lifted to this scheme directly. The group_descriptor validator needs to
be split into two pieces. The first part only needs the gd buffer and
is passed to ocfs2_read_block(). The second part requires the dinode as
well, and is called every time. It's only 3 compares, so it's tiny.
This also allows us to clean up the non-fatal gd check used by resize.c.
It now has no magic argument.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh
15 Oct, 2008
3 commits
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ocfs2_read_blocks() currently requires the CACHED flag for cached I/O.
However, that's the common case. Let's flip it around and provide an
IGNORE_CACHE flag for the special users. This has the added benefit of
cleaning up the code some (ignore_cache takes on its special meaning
earlier in the loop).Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
More than 30 callers of ocfs2_read_block() pass exactly OCFS2_BH_CACHED.
Only six pass a different flag set. Rather than have every caller care,
let's make ocfs2_read_block() take no flags and always do a cached read.
The remaining six places can call ocfs2_read_blocks() directly.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
Now that synchronous readers are using ocfs2_read_blocks_sync(), all
callers of ocfs2_read_blocks() are passing an inode. Use it
unconditionally. Since it's there, we don't need to pass the
ocfs2_super either.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh
18 Apr, 2008
7 commits
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ocfs2 asks the cluster stack for the local node's node number for two
reasons; to fill the slot map and to print it. While the slot map isn't
necessary for userspace cluster stacks, the printing is very nice for
debugging. Thus we add ocfs2_cluster_this_node() as a generic API to get
this value. It is anticipated that the slot map will not be used under a
userspace cluster stack, so validity checks of the node num only need to
exist in the slot map code. Otherwise, it just gets used and printed as an
opaque value.[ Fixed up some "int" versus "unsigned int" issues and made osb->node_num
truly opaque. --Mark ]Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
The old slot map had a few limitations:
- It was limited to one block, so the maximum slot count was 255.
- Each slot was signed 16bits, limiting node numbers to INT16_MAX.
- An empty slot was marked by the magic 0xFFFF (-1).The new slot map format provides 32bit node numbers (UINT32_MAX), a
separate space to mark a slot in use, and extra room to grow. The slot
map is now bounded by i_size, not a block.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
The slot map file is merely an array of __le16. Wrap it in a structure for
cleaner reference.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
The in-memory slot map uses the same magic as the on-disk one. There is
a special value to mark a slot as invalid. It relies on the size of
certain types and so on.Write a new in-memory map that keeps validity as a separate field. Outside
of the I/O functions, OCFS2_INVALID_SLOT now means what it is supposed to.
It also is no longer tied to the type size.This also means that only the I/O functions refer to 16bit quantities.
Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
The slot map code assumed a slot_map file has one block allocated.
This changes the code to I/O as many blocks as will cover max_slots.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
Just use osb_lock around the ocfs2_slot_info data. This allows us to
take the ocfs2_slot_info structure private in slot_info.c. All access
is now via accessors.Signed-off-by: Joel Becker
Signed-off-by: Mark Fasheh -
journal.c and dlmglue.c would refresh the slot map by hand. Instead, have
the update and clear functions do the work inside slot_map.c. The eventual
result is to make ocfs2_slot_info defined privately in slot_map.cSigned-off-by: Joel Becker
Signed-off-by: Mark Fasheh
26 Jan, 2008
1 commit
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The node maps that are set/unset by these votes are no longer relevant, thus
we can remove the mount and umount votes. Since those are the last two
remaining votes, we can also remove the entire vote infrastructure.The vote thread has been renamed to the downconvert thread, and the small
amount of functionality related to managing it has been moved into
fs/ocfs2/dlmglue.c. All references to votes have been removed or updated.Signed-off-by: Mark Fasheh
11 Jul, 2007
1 commit
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ocfs2 will attempt to assign the node the slot# provided in the mount
option. Failure to assign the preferred slot is not an error. This small
feature can be useful for automated testing.Signed-off-by: Sunil Mushran
Signed-off-by: Mark Fasheh
09 May, 2007
1 commit
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Remove includes of where it is not used/needed.
Suggested by Al Viro.Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).Signed-off-by: Randy Dunlap
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Apr, 2007
2 commits
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Return an optional extent flags field from our lookup functions and wire up
callers to treat unwritten regions as holes for the purpose of returning
zeros to the user.Signed-off-by: Mark Fasheh
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The code in extent_map.c is not prepared to deal with a subtree being
rotated between lookups. This can happen when filling holes in sparse files.
Instead of a lengthy patch to update the code (which would likely lose the
benefit of caching subtree roots), we remove most of the algorithms and
implement a simple path based lookup. A less ambitious extent caching scheme
will be added in a later patch.Signed-off-by: Mark Fasheh
14 Dec, 2006
1 commit
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All kcalloc() calls of the form "kcalloc(1,...)" are converted to the
equivalent kzalloc() calls, and a few kcalloc() calls with the incorrect
ordering of the first two arguments are fixed.Signed-off-by: Robert P. J. Day
Cc: Jeff Garzik
Cc: Alan Cox
Cc: Dominik Brodowski
Cc: Adam Belay
Cc: James Bottomley
Cc: Greg KH
Cc: Mark Fasheh
Cc: Trond Myklebust
Cc: Neil Brown
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
30 Jun, 2006
1 commit
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Signed-off-by: Mark Fasheh
04 Jan, 2006
1 commit
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The OCFS2 file system module.
Signed-off-by: Mark Fasheh
Signed-off-by: Kurt Hackel