user/sven/linux.git/include/linux/ext3_fs_sb.h, branch tmp/leds/core

Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

2009-01-09T01:14:59Z

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (57 commits) jbd2: Fix oops in jbd2_journal_init_inode() on corrupted fs ext4: Remove "extents" mount option block: Add Kconfig help which notes that ext4 needs CONFIG_LBD ext4: Make printk's consistently prefixed with "EXT4-fs: " ext4: Add sanity checks for the superblock before mounting the filesystem ext4: Add mount option to set kjournald's I/O priority jbd2: Submit writes to the journal using WRITE_SYNC jbd2: Add pid and journal device name to the "kjournald2 starting" message ext4: Add markers for better debuggability ext4: Remove code to create the journal inode ext4: provide function to release metadata pages under memory pressure ext3: provide function to release metadata pages under memory pressure add releasepage hooks to block devices which can be used by file systems ext4: Fix s_dirty_blocks_counter if block allocation failed with nodelalloc ext4: Init the complete page while building buddy cache ext4: Don't allow new groups to be added during block allocation ext4: mark the blocks/inode bitmap beyond end of group as used ext4: Use new buffer_head flag to check uninit group bitmaps initialization ext4: Fix the race between read_inode_bitmap() and ext4_new_inode() ext4: code cleanup ...

ext3: allocate ->s_blockgroup_lock separately

2009-01-08T16:31:00Z

As spotted by kmemtrace, struct ext3_sb_info is 17152 bytes on 64-bit which makes it a very bad fit for SLAB allocators. The culprit of the wasted memory is ->s_blockgroup_lock which can be as big as 16 KB when NR_CPUS >= 32. To fix that, allocate ->s_blockgroup_lock, which fits nicely in a order 2 page in the worst case, separately. This shinks down struct ext3_sb_info enough to fit a 1 KB slab cache so now we allocate 16 KB + 1 KB instead of 32 KB saving 15 KB of memory. Acked-by: Andreas Dilger Signed-off-by: Pekka Enberg Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fs: introduce bgl_lock_ptr()

2009-01-04T21:33:20Z

As suggested by Andreas Dilger, introduce a bgl_lock_ptr() helper in and add separate sb_bgl_lock() helpers to filesystem specific header files to break the hidden dependency to struct ext[234]_sb_info. Also, while at it, convert the macros to static inlines to try make up for all the times I broke Andrew Morton's tree. Acked-by: Andreas Dilger Signed-off-by: Pekka Enberg Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ext3: Add support for non-native signed/unsigned htree hash algorithms

2008-10-28T17:21:55Z

The original ext3 hash algorithms assumed that variables of type char were signed, as God and K&R intended. Unfortunately, this assumption is not true on some architectures. Userspace support for marking filesystems with non-native signed/unsigned chars was added two years ago, but the kernel-side support was never added (until now). Signed-off-by: "Theodore Ts'o" Cc: akpm@linux-foundation.org Cc: linux-kernel@vger.kernel.org

ext3: show all mount options

2007-10-17T15:42:48Z

Signed-off-by: Miklos Szeredi Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

ext3: statfs speed up

2007-07-16T16:05:52Z

This is a patch that speeds up statfs. It is very simple - the "overhead" calculation, which takes a huge amount of time for large filesystems, never changes unless the size of the filesystem itself changes. That means we can store it in memory and only recalculate if the filesystem has been resized (almost never). It also fixes a minor problem that we never update the on-disk superblock free blocks/inodes counts until the filesystem is unmounted. While not fatal, we may as well update that on disk when we have the information, and it makes things like debugfs and dumpe2fs report a bit more accurate info. Signed-off-by: Badari Pulavarty Signed-off-by: Andreas Dilger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] "Bad" naming of structures and functions in ext3 reservation code

2004-11-11T05:41:26Z

The patch below renames struct reserve_window_node* and rsv_window_add() function to struct ext3_reserve_window_node* and ext3_rsv_window_add(). This eases the task of having several ext3-derived filesystem drivers (with different capabilities) in kernel. Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] ext3: online resizing

2004-10-29T06:24:01Z

The patch below adds online resize capability to ext3 based on Andreas patch for 2.4 and fixed up by Stephen. The patch also removes s_debts: s_debts is currently not used by ext3 (it is created, destroyed and checked but never set). Remove it for now. Resurrecting this will require adding it back in changed form. In existing form it's already unsafe wrt. byte-tearing as it performs unlocked byte increment/decrement on words which may be being accessed simultaneously on other CPUs. It is also the only in-memory dynamic table which needs to be extended by online-resize, so locking it will require care. Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] ext3 block reservations

2004-10-29T06:23:35Z

rbtree implementation and other changes From: Stephen Tweedie contributions From: Badari Pulavarty and probably me. This is the ext3 block reservation patch. It improves the layout of ext3 files by establishing, for each inode, reserved areas of the disk in which only that file can allocate blocks. Those reserved areas are managed in an rbtree, via the in-core inode. It's a bit like ext2 preallocation only stronger in that it can span already-allocated blocks, including the per-blockgroup inode tables and bitmaps. The patch fixes ext3's worst performance problem: disastrous layout when multiple files are being concurrently grown. It increases the size of the inode by rather a lot. A todo item is to dynamically allocate the `struct reserve_window_node', so we don't need to carry this storage for inodes which aren't opened for writing. The feature is enabled by mounting with the "reservation" mount option. Reservations default to "off". Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

[PATCH] ext3: journalled quotas

2004-04-15T00:03:20Z

From: Jan Kara Journalled quota support for ext3: The patch consists of two parts - ext3 changes and changes in generic quota code. The main idea of the changes is that a transaction is always started before any operation which changes quota file and dirtifying of the quota causes its write to disk. These two changes assure that quota change is journalled into the same transaction as the file change and hence after journal replay quota is consistent with the filesystem state. As during journal replay inodes from orphan list are deleted/truncated we have to do quota_on before the replay of the orphan list - this problem is solved by additional mount options to ext3 with quota file names and format. Some changes in generic code were also needed to assure that quota structure in file is always allocated and so ordinary quota operations (like adding/deleting a block/inode) need only a few blocks from the transaction.