Commit Graph

36 Commits

Author SHA1 Message Date
Nick Piggin ca5de404ff fs: rename buffer trylock
Like the page lock change, this also requires name change, so convert the
raw test_and_set bitop to a trylock.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-08-04 21:56:09 -07:00
Christoph Lameter eebd2aa355 Pagecache zeroing: zero_user_segment, zero_user_segments and zero_user
Simplify page cache zeroing of segments of pages through 3 functions

zero_user_segments(page, start1, end1, start2, end2)

        Zeros two segments of the page. It takes the position where to
        start and end the zeroing which avoids length calculations and
	makes code clearer.

zero_user_segment(page, start, end)

        Same for a single segment.

zero_user(page, start, length)

        Length variant for the case where we know the length.

We remove the zero_user_page macro. Issues:

1. Its a macro. Inline functions are preferable.

2. The KM_USER0 macro is only defined for HIGHMEM.

   Having to treat this special case everywhere makes the
   code needlessly complex. The parameter for zeroing is always
   KM_USER0 except in one single case that we open code.

Avoiding KM_USER0 makes a lot of code not having to be dealing
with the special casing for HIGHMEM anymore. Dealing with
kmap is only necessary for HIGHMEM configurations. In those
configurations we use KM_USER0 like we do for a series of other
functions defined in highmem.h.

Since KM_USER0 is depends on HIGHMEM the existing zero_user_page
function could not be a macro. zero_user_* functions introduced
here can be be inline because that constant is not used when these
functions are called.

Also extract the flushing of the caches to be outside of the kmap.

[akpm@linux-foundation.org: fix nfs and ntfs build]
[akpm@linux-foundation.org: fix ntfs build some more]
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Steven French <sfrench@us.ibm.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: "J. Bruce Fields" <bfields@fieldses.org>
Cc: Anton Altaparmakov <aia21@cantab.net>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: David Chinner <dgc@sgi.com>
Cc: Michael Halcrow <mhalcrow@us.ibm.com>
Cc: Steven French <sfrench@us.ibm.com>
Cc: Steven Whitehouse <swhiteho@redhat.com>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-05 09:44:13 -08:00
Anton Altaparmakov ebab89909e NTFS: Fix read regression.
The regression was caused by:
        commit[a32ea1e1f9] Fix read/truncate race

This causes ntfs_readpage() to be called for a zero i_size inode, which
failed when the file was compressed and non-resident.

Thanks a lot to Mike Galbraith for reporting the issue and tracking down
the commit that caused the regression.

Looking into it I found three bugs which the patch fixes.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Tested-by:  Mike Galbraith <efault@gmx.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-03 12:27:21 -07:00
Anton Altaparmakov bfab36e816 NTFS: Fix a mount time deadlock.
Big thanks go to Mathias Kolehmainen for reporting the bug, providing
debug output and testing the patches I sent him to get it working.

The fix was to stop calling ntfs_attr_set() at mount time as that causes
balance_dirty_pages_ratelimited() to be called which on systems with
little memory actually tries to go and balance the dirty pages which tries
to take the s_umount semaphore but because we are still in fill_super()
across which the VFS holds s_umount for writing this results in a
deadlock.

We now do the dirty work by hand by submitting individual buffers.  This
has the annoying "feature" that mounting can take a few seconds if the
journal is large as we have clear it all.  One day someone should improve
on this by deferring the journal clearing to a helper kernel thread so it
can be done in the background but I don't have time for this at the moment
and the current solution works fine so I am leaving it like this for now.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-12 09:16:30 -07:00
Nate Diller e3bf460f3e ntfs: use zero_user_page
Use zero_user_page() instead of open-coding it.

[akpm@linux-foundation.org: kmap-type fixes]
Signed-off-by: Nate Diller <nate.diller@gmail.com>
Acked-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-12 10:55:39 -07:00
Andrew Morton fa8609da99 [PATCH] ntfs: kmap_atomic() atomicity fix
The KM_BIO_SRC_IRQ kmap slot requires local irq protection.

Acked-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-30 16:01:35 -08:00
Richard Knutsson c49c311150 [PATCH] fs/ntfs: Conversion to generic boolean
Conversion of booleans to: generic-boolean.patch (2006-08-23)

Signed-off-by: Richard Knutsson <ricknu-0@student.ltu.se>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:19 -07:00
Christoph Hellwig f5e54d6e53 [PATCH] mark address_space_operations const
Same as with already do with the file operations: keep them in .rodata and
prevents people from doing runtime patching.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: Steven French <sfrench@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:04 -07:00
Ingo Molnar 4e5e529ad6 NTFS: Semaphore to mutex conversion.
The conversion was generated via scripts, and the result was validated
automatically via a script as well.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2006-03-23 16:57:48 +00:00
Anton Altaparmakov f95c4018fd NTFS: Remove all the make_bad_inode() calls. This should only be called
from read inode and new inode code paths.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2006-03-23 15:59:32 +00:00
Anton Altaparmakov 78264bd9c2 NTFS: Use buffer_migrate_page() for the ->migratepage function of all ntfs
address space operations.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2006-03-23 15:06:18 +00:00
Anton Altaparmakov 78af34f03d NTFS: Implement support for sector sizes above 512 bytes (up to the maximum
supported by NTFS which is 4096 bytes).
2006-02-24 10:32:33 +00:00
Anton Altaparmakov 7d0ffdb279 NTFS: $EA attributes can be both resident non-resident.
Minor tidying.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-10-19 12:21:19 +01:00
Anton Altaparmakov 29f5f3c141 NTFS: Remove address space operations ->prepare_write and ->commit_write in
preparation for the big rewrite of write(2) support in ntfs.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-10-11 14:59:40 +01:00
Anton Altaparmakov f6098cf449 NTFS: Fix ntfs_{read,write}page() to cope with concurrent truncates better.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-19 09:41:39 +01:00
Anton Altaparmakov 4e64c88693 NTFS: Fix handling of compressed directories that I broke in earlier changeset.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-19 09:38:41 +01:00
Andrew Morton b4012a9895 [PATCH] ntfs build fix
*** Warning: "bit_spin_lock" [fs/ntfs/ntfs.ko] undefined!
*** Warning: "bit_spin_unlock" [fs/ntfs/ntfs.ko] undefined!

Cc: Anton Altaparmakov <aia21@cantab.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-09-10 10:06:20 -07:00
Anton Altaparmakov 7d333d6c73 NTFS: 2.1.24 release and some minor final fixes.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 23:01:16 +01:00
Anton Altaparmakov e604635c8b NTFS: Improve scalability by changing the driver global spin lock in
fs/ntfs/aops.c::ntfs_end_buffer_async_read() to a bit spin lock
      in the first buffer head of a page.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 22:13:02 +01:00
Anton Altaparmakov a01ac532b5 NTFS: Fix page_has_buffers()/page_buffers() handling in fs/ntfs/aops.c.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 22:08:11 +01:00
Anton Altaparmakov 311120eca0 NTFS: Fixup handling of sparse, compressed, and encrypted attributes in
fs/ntfs/aops.c::ntfs_readpage().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 22:04:20 +01:00
Anton Altaparmakov 8273d5d4c2 NTFS: Fix fs/ntfs/aops.c::ntfs_{read,write}_block() to handle the case
where a concurrent truncate has truncated the runlist under our feet.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 22:00:33 +01:00
Anton Altaparmakov 54b02eb01c NTFS: Optimize fs/ntfs/aops.c::ntfs_write_block() by extending the page
lock protection over the buffer submission for i/o which allows the
      removal of the get_bh()/put_bh() pairs for each buffer.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 21:43:47 +01:00
Anton Altaparmakov bd45fdd209 NTFS: Fixup handling of sparse, compressed, and encrypted attributes in
fs/ntfs/aops.c::ntfs_writepage().

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 21:38:05 +01:00
Anton Altaparmakov 8dcdebafb8 NTFS: Make ntfs_write_block() not instantiate sparse blocks if they are zero.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-09-08 21:25:48 +01:00
Anton Altaparmakov 481d037421 NTFS: Complete the previous fix for the unset device when mapping buffers
for  mft record writing.  I had missed the writepage based mft record
      write code path.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-08-16 19:42:56 +01:00
Anton Altaparmakov 9f993fe463 NTFS: Fix a bug in address space operations error recovery code paths where
if the runlist was not mapped at all and a mapping error occured we
      would leave the runlist locked on exit to the function so that the
      next access to the same file would try to take the lock and deadlock.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-06-25 16:15:36 +01:00
Anton Altaparmakov d53ee32224 NTFS: Use MAX_BUF_PER_PAGE instead of variable sized array allocation for
better code generation and one less sparse warning in fs/ntfs/aops.c.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:49:42 +01:00
Anton Altaparmakov 905685f68f NTFS: - Modify ->readpage and ->writepage (fs/ntfs/aops.c) so they detect
and handle the case where an attribute is converted from resident
        to non-resident by a concurrent file write.
      - Reorder some operations when converting an attribute from resident
        to non-resident (fs/ntfs/attrib.c) so it is safe wrt concurrent
        ->readpage and ->writepage.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:26:01 +01:00
Randy Dunlap 8907547d4b NTFS: Fix printk format warnings on ia64. (Randy Dunlap)
Signed-off-by: Randy Dunlap <rddunlap@osdl.org>
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 11:11:47 +01:00
Anton Altaparmakov b6ad6c52fe NTFS: - Split ntfs_map_runlist() into ntfs_map_runlist() and a non-locking
helper ntfs_map_runlist_nolock() which is used by ntfs_map_runlist().
	This allows us to map runlist fragments with the runlist lock already
	held without having to drop and reacquire it around the call.  Adapt
	all callers.
      - Change ntfs_find_vcn() to ntfs_find_vcn_nolock() which takes a locked
	runlist.  This allows us to find runlist elements with the runlist
	lock already held without having to drop and reacquire it around the
	call.  Adapt all callers.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 10:56:31 +01:00
Anton Altaparmakov f40661be03 NTFS: Optimise/reorganise some error handling code in fs/ntfs/aops.c.
Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 10:48:11 +01:00
Anton Altaparmakov 946929d813 NTFS: Fixup the resident attribute resizing code in
fs/ntfs/aops.c::ntfs_{prepare,commit}_write()() and re-enable it.
      It should be safe now.  (Famous last words...)

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 10:47:05 +01:00
Anton Altaparmakov 149f0c5200 NTFS: Repeat a failed ntfs_truncate() in fs/ntfs/aops.c::ntfs_writepage()
and abort if it fails again.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 10:43:29 +01:00
Anton Altaparmakov 07a4e2da7d NTFS: Use i_size_{read,write}() in fs/ntfs/{aops.c,mft.c} and protect
access to the i_size and other size fields using the size_lock.

Signed-off-by: Anton Altaparmakov <aia21@cantab.net>
2005-05-05 10:39:08 +01:00
Linus Torvalds 1da177e4c3 Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!
2005-04-16 15:20:36 -07:00