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2006-12-21[PATCH] Fix XFS after clear_page_dirty() removalDavid Chinner
XFS appears to call clear_page_dirty to get the mapping tree dirty tag set correctly at the same time the page dirty flag is cleared. I note that this can be done by set_page_writeback() if we clear the dirty flag on the page first when we are writing back the entire page. Hence it seems to me that the XFS call to clear_page_dirty() could easily be substituted by clear_page_dirty_for_io() followed by a call to set_page_writeback() to get the mapping tree tags set correctly after the page has been marked clean. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-10[PATCH] dio: only call aio_complete() after returning -EIOCBQUEUEDZach Brown
The only time it is safe to call aio_complete() is when the ->ki_retry function returns -EIOCBQUEUED to the AIO core. direct_io_worker() has historically done this by relying on its caller to translate positive return codes into -EIOCBQUEUED for the aio case. It did this by trying to keep conditionals in sync. direct_io_worker() knew when finished_one_bio() was going to call aio_complete(). It would reverse the test and wait and free the dio in the cases it thought that finished_one_bio() wasn't going to. Not surprisingly, it ended up getting it wrong. 'ret' could be a negative errno from the submission path but it failed to communicate this to finished_one_bio(). direct_io_worker() would return < 0, it's callers wouldn't raise -EIOCBQUEUED, and aio_complete() would be called. In the future finished_one_bio()'s tests wouldn't reflect this and aio_complete() would be called for a second time which can manifest as an oops. The previous cleanups have whittled the sync and async completion paths down to the point where we can collapse them and clearly reassert the invariant that we must only call aio_complete() after returning -EIOCBQUEUED. direct_io_worker() will only return -EIOCBQUEUED when it is not the last to drop the dio refcount and the aio bio completion path will only call aio_complete() when it is the last to drop the dio refcount. direct_io_worker() can ensure that it is the last to drop the reference count by waiting for bios to drain. It does this for sync ops, of course, and for partial dio writes that must fall back to buffered and for aio ops that saw errors during submission. This means that operations that end up waiting, even if they were issued as aio ops, will not call aio_complete() from dio. Instead we return the return code of the operation and let the aio core call aio_complete(). This is purposely done to fix a bug where AIO DIO file extensions would call aio_complete() before their callers have a chance to update i_size. Now that direct_io_worker() is explicitly returning -EIOCBQUEUED its callers no longer have to translate for it. XFS needs to be careful not to free resources that will be used during AIO completion if -EIOCBQUEUED is returned. We maintain the previous behaviour of trying to write fs metadata for O_SYNC aio+dio writes. Signed-off-by: Zach Brown <zach.brown@oracle.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Cc: Suparna Bhattacharya <suparna@in.ibm.com> Acked-by: Jeff Moyer <jmoyer@redhat.com> Cc: <xfs-masters@oss.sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08[PATCH] xfs: change uses of f_{dentry,vfsmnt} to use f_pathJosef "Jeff" Sipek
Change all the uses of f_{dentry,vfsmnt} to f_path.{dentry,mnt} in the xfs filesystem. Signed-off-by: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Use freezeable workqueues in XFSRafael J. Wysocki
Make the workqueues used by XFS freezeable, so their worker threads don't submit any I/O after the suspend image has been created. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Nigel Cunningham <nigel@suspend2.net> Cc: David Chinner <dgc@sgi.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07[PATCH] Add include/linux/freezer.h and move definitions from sched.hNigel Cunningham
Move process freezing functions from include/linux/sched.h to freezer.h, so that modifications to the freezer or the kernel configuration don't require recompiling just about everything. [akpm@osdl.org: fix ueagle driver] Signed-off-by: Nigel Cunningham <nigel@suspend2.net> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-22WorkStruct: make allyesconfigDavid Howells
Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
2006-11-21[XFS] Stale the correct inode when freeing clusters.David Chinner
SGI-PV: 958376 SGI-Modid: xfs-linux-melb:xfs-kern:27503a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-21[XFS] Fix uninitialized br_state and br_startoff inLachlan McIlroy
xfs_bmap_add_extent_delay_real() SGI-PV: 957008 SGI-Modid: xfs-linux-melb:xfs-kern:27457a Signed-off-by: Lachlan McIlroy <lachlan@sgi.com> Signed-off-by: Shailendra Tripathi <stripathi@agami.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] Remove KERNEL_VERSION macros from xfs_dmapi.hDavid Chinner
SGI-PV: 957005 SGI-Modid: xfs-linux-melb:xfs-kern:27398a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] Prevent a deadlock when xfslogd unpins inodes.David Chinner
The previous fixes for the use after free in xfs_iunpin left a nasty log deadlock when xfslogd unpinned the inode and dropped the last reference to the inode. the ->clear_inode() method can issue transactions, and if the log was full, the transaction could push on the log and get stuck trying to push the inode it was currently unpinning. To fix this, we provide xfs_iunpin a guarantee that it will always have a valid xfs_inode <-> linux inode link or a particular flag will be set on the inode. We then use log forces during lookup to ensure transactions are completed before we recycle the inode. This ensures that xfs_iunpin will never use the linux inode after it is being freed, and any lookup on an inode on the reclaim list will wait until it is safe to attach a new linux inode to the xfs inode. SGI-PV: 956832 SGI-Modid: xfs-linux-melb:xfs-kern:27359a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Shailendra Tripathi <stripathi@agami.com> Signed-off-by: Takenori Nagano <t-nagano@ah.jp.nec.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] Clean up i_flags and i_flags_lock handling.David Chinner
SGI-PV: 956832 SGI-Modid: xfs-linux-melb:xfs-kern:27358a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Nathan Scott <nscott@aconex.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] 956664: dm_read_invis() changes i_atimeVlad Apostolov
SGI-PV: 956664 SGI-Modid: xfs-linux-melb:xfs-kern:27315a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Sam Vaughan <sjv@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] rename uio_read() to xfs_uio_read()Vlad Apostolov
SGI-PV: 957004 SGI-Modid: xfs-linux-melb:xfs-kern:27231a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-11-11[XFS] Keep lockdep happy.Tim Shimmin
SGI-PV: 956964 SGI-Modid: xfs-linux-melb:xfs-kern:27200a Signed-off-by: Tim Shimmin <tes@sgi.com> Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
2006-11-11[XFS] 956618: Linux crashes on boot with XFS-DMAPI filesystem whenVlad Apostolov
CONFIG_XFS_TRACE is on SGI-PV: 956618 SGI-Modid: xfs-linux-melb:xfs-kern:27196a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-10-20[PATCH] separate bdi congestion functions from queue congestion functionsAndrew Morton
Separate out the concept of "queue congestion" from "backing-dev congestion". Congestion is a backing-dev concept, not a queue concept. The blk_* congestion functions are retained, as wrappers around the core backing-dev congestion functions. This proper layering is needed so that NFS can cleanly use the congestion functions, and so that CONFIG_BLOCK=n actually links. Cc: "Thomas Maier" <balagi@justmail.de> Cc: "Jens Axboe" <jens.axboe@oracle.com> Cc: Trond Myklebust <trond.myklebust@fys.uio.no> Cc: David Howells <dhowells@redhat.com> Cc: Peter Osterlund <petero2@telia.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03BUG_ON conversion for fs/xfs/Eric Sesterhenn
This patch converts two if () BUG(); construct to BUG_ON(); which occupies less space, uses unlikely and is safer when BUG() is disabled. Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-10-01[PATCH] Streamline generic_file_* interfaces and filemap cleanupsBadari Pulavarty
This patch cleans up generic_file_*_read/write() interfaces. Christoph Hellwig gave me the idea for this clean ups. In a nutshell, all filesystems should set .aio_read/.aio_write methods and use do_sync_read/ do_sync_write() as their .read/.write methods. This allows us to cleanup all variants of generic_file_* routines. Final available interfaces: generic_file_aio_read() - read handler generic_file_aio_write() - write handler generic_file_aio_write_nolock() - no lock write handler __generic_file_aio_write_nolock() - internal worker routine Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] Remove readv/writev methods and use aio_read/aio_write insteadBadari Pulavarty
This patch removes readv() and writev() methods and replaces them with aio_read()/aio_write() methods. Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01[PATCH] Vectorize aio_read/aio_write fileop methodsBadari Pulavarty
This patch vectorizes aio_read() and aio_write() methods to prepare for collapsing all aio & vectored operations into one interface - which is aio_read()/aio_write(). Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Michael Holzheu <HOLZHEU@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-30[PATCH] BLOCK: Make it possible to disable the block layer [try #6]David Howells
Make it possible to disable the block layer. Not all embedded devices require it, some can make do with just JFFS2, NFS, ramfs, etc - none of which require the block layer to be present. This patch does the following: (*) Introduces CONFIG_BLOCK to disable the block layer, buffering and blockdev support. (*) Adds dependencies on CONFIG_BLOCK to any configuration item that controls an item that uses the block layer. This includes: (*) Block I/O tracing. (*) Disk partition code. (*) All filesystems that are block based, eg: Ext3, ReiserFS, ISOFS. (*) The SCSI layer. As far as I can tell, even SCSI chardevs use the block layer to do scheduling. Some drivers that use SCSI facilities - such as USB storage - end up disabled indirectly from this. (*) Various block-based device drivers, such as IDE and the old CDROM drivers. (*) MTD blockdev handling and FTL. (*) JFFS - which uses set_bdev_super(), something it could avoid doing by taking a leaf out of JFFS2's book. (*) Makes most of the contents of linux/blkdev.h, linux/buffer_head.h and linux/elevator.h contingent on CONFIG_BLOCK being set. sector_div() is, however, still used in places, and so is still available. (*) Also made contingent are the contents of linux/mpage.h, linux/genhd.h and parts of linux/fs.h. (*) Makes a number of files in fs/ contingent on CONFIG_BLOCK. (*) Makes mm/bounce.c (bounce buffering) contingent on CONFIG_BLOCK. (*) set_page_dirty() doesn't call __set_page_dirty_buffers() if CONFIG_BLOCK is not enabled. (*) fs/no-block.c is created to hold out-of-line stubs and things that are required when CONFIG_BLOCK is not set: (*) Default blockdev file operations (to give error ENODEV on opening). (*) Makes some /proc changes: (*) /proc/devices does not list any blockdevs. (*) /proc/diskstats and /proc/partitions are contingent on CONFIG_BLOCK. (*) Makes some compat ioctl handling contingent on CONFIG_BLOCK. (*) If CONFIG_BLOCK is not defined, makes sys_quotactl() return -ENODEV if given command other than Q_SYNC or if a special device is specified. (*) In init/do_mounts.c, no reference is made to the blockdev routines if CONFIG_BLOCK is not defined. This does not prohibit NFS roots or JFFS2. (*) The bdflush, ioprio_set and ioprio_get syscalls can now be absent (return error ENOSYS by way of cond_syscall if so). (*) The seclvl_bd_claim() and seclvl_bd_release() security calls do nothing if CONFIG_BLOCK is not set, since they can't then happen. Signed-Off-By: David Howells <dhowells@redhat.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2006-09-29[XFS] Remove v1 dir trace macro - missed in a past commit.Tim Shimmin
Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] 955947: Infinite loop in xfs_bulkstat() on formatter() errorVlad Apostolov
SGI-PV: 955947 SGI-Modid: xfs-linux-melb:xfs-kern:26986a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] pv 956241, author: nathans, rv: vapo - make ino validation checksVlad Apostolov
consistent in bulkstat SGI-PV: 956241 SGI-Modid: xfs-linux-melb:xfs-kern:26984a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] pv 956240, author: nathans, rv: vapo - Minor fixes inVlad Apostolov
kmem_zalloc_greedy() SGI-PV: 956240 SGI-Modid: xfs-linux-melb:xfs-kern:26983a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Really fix use after free in xfs_iunpin.David Chinner
The previous attempts to fix the linux inode use-after-free in xfs_iunpin simply made the problem harder to hit. We actually need complete exclusion between xfs_reclaim and xfs_iunpin, as well as ensuring that the i_flags are consistent during both of these functions. Introduce a new spinlock for exclusion and the i_flags, and fix up xfs_iunpin to use igrab before marking the inode dirty. SGI-PV: 952967 SGI-Modid: xfs-linux-melb:xfs-kern:26964a Signed-off-by: David Chinner <dgc@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Collapse sv_init and init_sv into just the one interface.Eric Sandeen
SGI-PV: 907752 SGI-Modid: xfs-linux-melb:xfs-kern:26925a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] standardize on one sema init macroEric Sandeen
One sema to rule them all, one sema to find them... SGI-PV: 907752 SGI-Modid: xfs-linux-melb:xfs-kern:26911a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Reduce endian flipping in alloc_btree, same as was done forEric Sandeen
ialloc_btree. SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26910a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Minor cleanup from dio locking fix, remove an extra conditional.Nathan Scott
SGI-PV: 955696 SGI-Modid: xfs-linux-melb:xfs-kern:26908a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Fix kmem_zalloc_greedy warnings on 64 bit platforms.Nathan Scott
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26907a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] pv 955157, rv bnaujok - break the loop on EFAULT formatter() errorVlad Apostolov
SGI-PV: 955157 SGI-Modid: xfs-linux-melb:xfs-kern:26869a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] pv 955157, rv bnaujok - break the loop on formatter() errorVlad Apostolov
SGI-PV: 955157 SGI-Modid: xfs-linux-melb:xfs-kern:26866a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Fixes the leak in reservation space because we weren't ungrantingTim Shimmin
space for the unmount record - which becomes a problem in the freeze/thaw scenario. SGI-PV: 942533 SGI-Modid: xfs-linux-melb:xfs-kern:26815a Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Add lock annotations to xfs_trans_update_ail andJosh Triplett
xfs_trans_delete_ail xfs_trans_update_ail and xfs_trans_delete_ail get called with the AIL lock held, and release it. Add lock annotations to these two functions so that sparse can check callers for lock pairing, and so that sparse will not complain about these functions since they intentionally use locks in this manner. SGI-PV: 954580 SGI-Modid: xfs-linux-melb:xfs-kern:26807a Signed-off-by: Josh Triplett <josh@freedesktop.org> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Fix a porting botch on the realtime subvol growfs code path.Nathan Scott
SGI-PV: 955515 SGI-Modid: xfs-linux-melb:xfs-kern:26806a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Minor code rearranging and cleanup to prevent some coverity falseNathan Scott
positives. SGI-PV: 955502 SGI-Modid: xfs-linux-melb:xfs-kern:26805a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Remove a no-longer-correct debug assert from dio completionNathan Scott
handling. SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26804a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Add a greedy allocation interface, allocating within a min/max sizeNathan Scott
range. SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26803a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Improve error handling for the zero-fsblock extent detection code.Nathan Scott
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26802a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Be more defensive with page flags (error/private) for metadataNathan Scott
buffers. SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26801a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Add a debug flag for allocations which are known to be larger thanNathan Scott
one page. SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26800a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Remove several macros that are no longer used anywhereEric Sandeen
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26749a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Remove unused iop_abort log item operationEric Sandeen
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26747a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Remove a couple of unused BUF macrosEric Sandeen
SGI-PV: 955302 SGI-Modid: xfs-linux-melb:xfs-kern:26746a Signed-off-by: Eric Sandeen <sandeen@sandeen.net> Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] pass file mode on DMAPI remove eventsVlad Apostolov
SGI-PV: 953687 SGI-Modid: xfs-linux-melb:xfs-kern:26639a Signed-off-by: Vlad Apostolov <vapo@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Remove last bulkstat false-positives with debug kernels.Nathan Scott
SGI-PV: 953819 SGI-Modid: xfs-linux-melb:xfs-kern:26628a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Ensure xlog_state_do_callback does not report spurious warnings onNathan Scott
ramdisks. SGI-PV: 954802 SGI-Modid: xfs-linux-melb:xfs-kern:26627a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Increase the size of the buffer holding the local inode clusterNathan Scott
list, to increase our potential readahead window and in turn improve bulkstat performance. SGI-PV: 944409 SGI-Modid: xfs-linux-melb:xfs-kern:26607a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>
2006-09-28[XFS] Drop unneeded endian conversion in bulkstat and start readahead forNathan Scott
batches of inode cluster buffers at once, before any blocking reads are issued. SGI-PV: 944409 SGI-Modid: xfs-linux-melb:xfs-kern:26606a Signed-off-by: Nathan Scott <nathans@sgi.com> Signed-off-by: Tim Shimmin <tes@sgi.com>