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2009-11-20ceph: remove dead codeSage Weil1-21/+0
Left over from mount/auth protocol changes. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20ceph: reset msgr backoff during open, not after successful handshakeSage Weil1-2/+1
Reset the backoff delay when we reopen the connection, so that the delays for any initial connection problems are reasonable. We were resetting only after a successful handshake, which was of limited utility. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20ceph: reset requested max_size after mds reconnectSage Weil1-4/+17
The max_size increase request to the MDS can get lost during an MDS restart and reconnect. Reset our requested value after the MDS recovers, so that any blocked writes will re-request a larger max_size upon waking. Also, explicit wake session caps after the reconnect. Normally the cap renewal catches this, but not in the cases where the caps didn't go stale in the first place, which would leave writers waiting on max_size asleep. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20ceph: mount fails immediately on errorYehuda Sadeh2-1/+10
Signed-off-by: Yehuda Sadeh <yehuda@newdream.net>
2009-11-20ceph: decode updated mdsmap formatSage Weil3-7/+11
The mds map now uses the global_id as the 'key' (instead of the addr, which was a poor choice). This is protocol change. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20ceph: fix debugfs entry, simplify fsid checksSage Weil6-139/+50
We may first learn our fsid from any of the mon, osd, or mds maps (whichever the monitor sends first). Consolidate checks in a single helper. Initialize the client debugfs entry then, since we need the fsid (and global_id) for the directory name. Also remove dead mount code. Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20ceph: small cleanup in hash functionSage Weil1-1/+1
Signed-off-by: Sage Weil <sage@newdream.net>
2009-11-20FS-Cache: Provide nop fscache_stat_d() if CONFIG_FSCACHE_STATS=nDavid Howells1-0/+1
Provide nop fscache_stat_d() macro if CONFIG_FSCACHE_STATS=n lest errors like the following occur: fs/fscache/cache.c: In function 'fscache_withdraw_cache': fs/fscache/cache.c:386: error: implicit declaration of function 'fscache_stat_d' fs/fscache/cache.c:386: error: 'fscache_n_cop_sync_cache' undeclared (first use in this function) fs/fscache/cache.c:386: error: (Each undeclared identifier is reported only once fs/fscache/cache.c:386: error: for each function it appears in.) fs/fscache/cache.c:392: error: 'fscache_n_cop_dissociate_pages' undeclared (first use in this function) Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-20SLOW_WORK: Fix GFS2 to #include <linux/module.h> before using THIS_MODULEDavid Howells1-0/+1
GFS2 has been altered to pass THIS_MODULE to slow_work_register_user(), but hasn't been altered to #include <linux/module.h> to provide it, resulting in the following error: fs/gfs2/recovery.c:596: error: 'THIS_MODULE' undeclared here (not in a function) Add the missing #include. Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-20SLOW_WORK: Fix CIFS to pass THIS_MODULE to slow_work_register_user()David Howells1-1/+1
As of the patch: SLOW_WORK: Wait for outstanding work items belonging to a module to clear Wait for outstanding slow work items belonging to a module to clear when unregistering that module as a user of the facility. This prevents the put_ref code of a work item from being taken away before it returns. slow_work_register_user() takes a module pointer as an argument. CIFS must now pass THIS_MODULE as that argument, lest the following error be observed: fs/cifs/cifsfs.c: In function 'init_cifs': fs/cifs/cifsfs.c:1040: error: too few arguments to function 'slow_work_register_user' Signed-off-by: David Howells <dhowells@redhat.com>
2009-11-20[LogFS] add new flash file systemJoern Engel17-0/+8903
This is a new flash file system. See Documentation/filesystems/logfs.txt Signed-off-by: Joern Engel <joern@logfs.org>
2009-11-20kill-the-bkl/reiserfs: turn GFP_ATOMIC flag to GFP_NOFS in reiserfs_get_block()Frederic Weisbecker1-1/+1
GFP_ATOMIC was used in reiserfs_get_block to not lose the Bkl so that nobody can modify the tree in the middle of its work. Now that we kicked out the bkl, we can use a more friendly flag. We use GFP_NOFS here because we already hold the reiserfs lock. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Chris Mason <chris.mason@oracle.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Alexander Beregalov <a.beregalov@gmail.com> Cc: Laurent Riffard <laurent.riffard@free.fr> Cc: Thomas Gleixner <tglx@linutronix.de>
2009-11-19Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2Linus Torvalds5-24/+80
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2: ocfs2: Trivial cleanup of jbd compatibility layer removal ocfs2: Refresh documentation ocfs2: return f_fsid info in ocfs2_statfs() ocfs2: duplicate inline data properly during reflink. ocfs2: Move ocfs2_complete_reflink to the right place. ocfs2: Return -EINVAL when a device is not ocfs2.
2009-11-20nilfs2: add norecovery mount optionRyusuke Konishi2-3/+33
This adds "norecovery" mount option which disables temporal write access to read-only mounts or snapshots during mount/recovery. Without this option, write access will be even performed for those types of mounts; the temporal write access is needed to mount root file system read-only after an unclean shutdown. This option will be helpful when user wants to prevent any write access to the device. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Cc: Eric Sandeen <sandeen@redhat.com>
2009-11-20nilfs2: add helper to get if volume is in a valid stateRyusuke Konishi2-5/+11
This adds a helper function, nilfs_valid_fs() which returns if nilfs is in a valid state or not. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: move recovery completion into load_nilfs functionRyusuke Konishi2-56/+53
Although mount recovery of nilfs is integrated in load_nilfs() procedure, the completion of recovery was isolated from the procedure and performed at the end of the fill_super routine. This was somewhat confusing since the recovery is needed for the nilfs object, not for a super block instance. To resolve the inconsistency, this will integrate the recovery completion into load_nilfs(). Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: apply readahead for recovery on mountRyusuke Konishi1-7/+19
This inserts readahead in the recovery code. The readahead request is issued per segment while searching the latest super root block. This will shorten mount time after unclean unmount. A measurement shows the recovery time was reduced by more than 60 percent: e.g. real 0m11.586s -> 0m3.918s (x 2.96) Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: clean up get/put function of a segment usageRyusuke Konishi2-77/+0
This eliminates obsolete nilfs_get_sufile_get_segment_usage() and nilfs_set_sufile_segment_usage() from sufile. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: move routine to set segment usage into sufileRyusuke Konishi3-22/+49
This adds nilfs_sufile_set_segment_usage() function in sufile to replace direct access to the sufile metadata in log writer code. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: move routine marking segment usage dirty into sufileRyusuke Konishi3-17/+22
This adds nilfs_sufile_mark_dirty() function in sufile to replace nilfs_touch_segusage() function in log writer code. This is a preparation for the further cleanup which will move out low level sufile operations in the log writer. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: insert cache operation in palloc get block routinesRyusuke Konishi1-8/+54
This implements cache operation in get block routines of palloc code: nilfs_palloc_get_desc_block(), nilfs_palloc_get_bitmap_block(), and nilfs_palloc_get_entry_block(). This will complete the palloc cache. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: add palloc cache to ifileRyusuke Konishi1-1/+15
This adds the palloc cache to ifile. The palloc cache is allocated on the extended region of nilfs_mdt_info struct. The struct nilfs_ifile_info defines the extended on memory structure of ifile. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: flush palloc cache before manipulating data pages of GC datRyusuke Konishi1-0/+3
Data pages in gcdat metadata file (i.e. the secondary DAT for GC), are cleared or even moved back to the normal DAT when a shot of garbage collection was done. Buffer heads held by the palloc cache of gcdat must be cleared before these page cache manipulation. This adds nilfs_palloc_clear_cache() to ensure this. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: add palloc cache to datRyusuke Konishi1-2/+16
This adds the palloc cache to DAT file. The palloc cache is allocated on the extended region of nilfs_mdt_info struct. The struct nilfs_dat_info defines the extended on memory structure of DAT. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: add cache framework for persistent object allocatorRyusuke Konishi4-0/+52
This adds setup and cleanup routines of the persistent object allocator cache. According to ftrace analyses, accessing buffers of the DAT file suffers indispensable overhead many times. To mitigate the overhead, This introduce cache framework for the persistent object allocator (palloc) which the DAT file and ifile are using. struct nilfs_palloc_cache represents the cache object per metadata file using palloc. The cache is initialized through nilfs_palloc_setup_cache() and destroyed by nilfs_palloc_destroy_cache(); callers of the former function will be added to individual allocators of DAT and ifile on successive patches. nilfs_palloc_destroy_cache() will be called from nilfs_mdt_destroy() if the cache is attached to a metadata file. A companion function nilfs_palloc_clear_cache() is provided to allow releasing buffer head references independently with the cleanup task. This adjunctive function will be used before invalidating pages of metadata file with the cache. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: unfold nilfs_palloc_block_get_bitmap functionRyusuke Konishi1-15/+4
This expands a trivial address calculation in the function into its every callsite. This expansion improves readability of the callers. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: eliminate nilfs_btnode_get functionRyusuke Konishi3-24/+12
This removes the obsolete nilfs_btnode_get() function and makes nilfs_btree_get_block() directly call nilfs_btnode_submit_block(). This expansion will provide better opportunity for code optimization. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: remove newblk argument from nilfs_btnode_submit_blockRyusuke Konishi3-20/+6
This removes the obsolete argument from nilfs_btnode_submit_block(). This will complete separating a create function of btree node. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: use nilfs_btnode_create_block functionRyusuke Konishi2-11/+15
This displaces nilfs_btnode_get() use to create new btree node block with nilfs_btnode_create_block. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: separate function for creating new btree node blockRyusuke Konishi2-0/+28
Adds a separate routine for creating a btree node block. This is a preparation to reduce the depth of function calls during submitting btree node buffer. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: avoid readahead on metadata file for create modeRyusuke Konishi1-13/+15
This turns off readhead action of metadata file if nilfs_mdt_get_block function was called with a create flag. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: simplify nilfs_sufile_get_ncleansegs functionRyusuke Konishi3-38/+19
Previously, this function took an status code to return possible error codes. The ("nilfs2: add local variable to cache the number of clean segments") patch removed the possibility to return errors. So, this simplifies the function definition to make it directly return the number of clean segments. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: add local variable to cache the number of clean segmentsRyusuke Konishi1-10/+43
This makes it possible for sufile to get the number of clean segments faster. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: unfold nilfs_sufile_block_get_header functionRyusuke Konishi1-12/+3
This unfolds the nilfs_sufile_block_get_header() function for simplicity. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: hide nilfs_mdt_clear calls in nilfs_mdt_destroyRyusuke Konishi6-15/+5
This will hide a function call of nilfs_mdt_clear() in nilfs_mdt_destroy(). This ensures nilfs_mdt_destroy() to do cleanup jobs included in nilfs_mdt_clear(). Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: eliminate inlines to directly read/write inode of metadata filesRyusuke Konishi2-23/+6
Removes two inline functions: nilfs_mdt_read_inode_direct() and nilfs_mdt_write_inode_direct(). Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: separate read method of meta data files on super root blockRyusuke Konishi7-6/+39
Will displace nilfs_mdt_read_inode_direct function with an individual read method: nilfs_dat_read, nilfs_sufile_read, nilfs_cpfile_read. This provides the opportunity to initialize local variables of each metadata file after reading the inode. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: separate constructor of metadata filesRyusuke Konishi10-25/+89
This will displace nilfs_mdt_new() constructor with individual metadata file constructors like nilfs_dat_new(), new_sufile_new(), nilfs_cpfile_new(), and nilfs_ifile_new(). This makes it possible for each metadata file to have own intialization code. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: add size option of private object to metadata file allocatorRyusuke Konishi5-13/+24
This adds an optional "object size" argument to nilfs_mdt_new_common() function; the argument specifies the size of private object attached to a newly allocated metadata file inode. This will afford space to keep local variables for meta data files. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: move out mark_inode_dirty calls from bmap routinesRyusuke Konishi2-4/+3
Previously, nilfs_bmap_add_blocks() and nilfs_bmap_sub_blocks() called mark_inode_dirty() after they changed the number of data blocks. This moves these calls outside bmap outermost functions like nilfs_bmap_insert() or nilfs_bmap_truncate(). This will mitigate overhead for truncate or delete operation since they repeatedly remove set of blocks. Nearly 10 percent improvement was observed for removal of a large file: # dd if=/dev/zero of=/test/aaa bs=1M count=512 # time rm /test/aaa real 2.968s -> 2.705s Further optimization may be possible by eliminating these mark_inode_dirty() uses though I avoid mixing separate changes here. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: stop marking metadata inode dirty within btree operationsRyusuke Konishi1-6/+2
Since metadata file routines mark the inode dirty after they successfully changed bmap objects, nilfs_mdt_mark_dirty() calls in nilfs_bmap_add_blocks() and nilfs_bmap_sub_blocks() are redundant. This removes these overlapping calls from the bmap routines. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: remove buffer locking from btree codeRyusuke Konishi1-60/+0
lock_buffer() and unlock_buffer() uses in btree.c are eliminable because btree functions gain buffer heads through nilfs_btnode_get(), which never returns an on-the-fly buffer. Although nilfs_clear_dirty_page() and nilfs_copy_back_pages() in nilfs_commit_gcdat_inode() juggle btree node buffers of DAT, this is safe because these operations are protected by a log writer lock or the metadata file semaphore of DAT. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: remove buffer locking in nilfs_mark_inode_dirtyRyusuke Konishi1-3/+0
This lock is eliminable because inodes on the buffer can be updated independently. Although a log writer also fills in bmap data on the on-disk inodes, this update is exclusively done by a log writer lock. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: cleanup unused match_bool functionJiro SEKIBA1-13/+0
match_bool function is not used anymore. Signed-off-by: Jiro SEKIBA <jir@unicus.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: Using nobarrier option instead of barrier=offJiro SEKIBA1-10/+5
Since most of fs using nofoobar style option, modified barrier=off option as nobarrier. Signed-off-by: Jiro SEKIBA <jir@unicus.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: move definition of struct nilfs_btree_nodeJiro SEKIBA1-22/+0
This is a trivial patch to expose struct nilfs_fs_btree_node. The struct should be exposed outside of kernel, for it is disk format. Signed-off-by: Jiro SEKIBA <jir@unicus.jp> Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-20nilfs2: get rid of BUG_ON use in btree lookup routinesRyusuke Konishi1-2/+16
The current btree lookup routines make a kernel oops when detected inconsistency in btree blocks. These routines should instead return a proper error code because the inconsistency usually comes from corruption of on-disk metadata. This fixes the issue by converting BUG_ON calls to proper error handlings. Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
2009-11-19Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6Linus Torvalds1-1/+1
* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6: SUNRPC: Address buffer overrun in rpc_uaddr2sockaddr() NFSv4: Fix a cache validation bug which causes getcwd() to return ENOENT
2009-11-19ext4: make "norecovery" an alias for "noload"Eric Sandeen1-0/+4
Users on the linux-ext4 list recently complained about differences across filesystems w.r.t. how to mount without a journal replay. In the discussion it was noted that xfs's "norecovery" option is perhaps more descriptively accurate than "noload," so let's make that an alias for ext4. Also show this status in /proc/mounts Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
2009-11-19ext4: make trim/discard optional (and off by default)Eric Sandeen3-8/+26
It is anticipated that when sb_issue_discard starts doing real work on trim-capable devices, we may see issues. Make this mount-time optional, and default it to off until we know that things are working out OK. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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