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* NFS: Allow redirtying of a completed unstable write.Trond Myklebust2008-07-09
| | | | | | | | | | | | | Currently, if an unstable write completes, we cannot redirty the page in order to reflect a new change in the page data until after we've sent a COMMIT request. This patch allows a page rewrite to proceed without the unnecessary COMMIT step, putting it immediately back onto the dirty page list, undoing the VM unstable write accounting, and removing the NFS_PAGE_TAG_COMMIT tag from the NFS radix tree. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Clean up the write request locking.Trond Myklebust2008-01-30
| | | | | | Ensure that we set/clear NFS_PAGE_TAG_LOCKED when the nfs_page is hashed. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Clean up write code...Trond Myklebust2007-10-09
| | | | | | | The addition of nfs_page_mkwrite means that We should no longer need to create requests inside nfs_writepage() Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Remove the redundant 'dirty' and 'commit' lists from nfs_inodeTrond Myklebust2007-07-10
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS cleanup: speed up nfs_scan_commit using radix tree tagsTrond Myklebust2007-07-10
| | | | | | Add a tag for requests that are waiting for a COMMIT Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS cleanup: Rename NFS_PAGE_TAG_WRITEBACK to NFS_PAGE_TAG_LOCKEDTrond Myklebust2007-07-10
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Convert struct nfs_page to use krefsTrond Myklebust2007-07-10
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Avoid a deadlock situation on writeTrond Myklebust2007-05-24
| | | | | | | | | | | | | When processes are allowed to attempt to lock a non-contiguous range of nfs write requests, it is possible for generic_writepages to 'wrap round' the address space, and call writepage() on a request that is already locked by the same process. We avoid the deadlock by checking if the page index is contiguous with the list of nfs write requests that is already held in our nfs_pageio_descriptor prior to attempting to lock a new request. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Use pgoff_t in structures and functions that pass page cache offsetsTrond Myklebust2007-05-01
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Fix a buffer overflow in the allocation of struct nfs_read/writedataTrond Myklebust2007-05-01
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Fix a race when doing NFS write coalescingTrond Myklebust2007-05-01
| | | | | | | | | | | | | | Currently we do write coalescing in a very inefficient manner: one pass in generic_writepages() in order to lock the pages for writing, then one pass in nfs_flush_mapping() and/or nfs_sync_mapping_wait() in order to gather the locked pages for coalescing into RPC requests of size "wsize". In fact, it turns out there is actually a deadlock possible here since we only start I/O on the second pass. If the user signals the process while we're in nfs_sync_mapping_wait(), for instance, then we may exit before starting I/O on all the requests that have been queued up. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Cleanup for nfs_readpages()Trond Myklebust2007-05-01
| | | | | | | Do the coalescing of read requests into block sized requests at start of I/O as we scan through the pages instead of going through a second pass. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Another cleanup of the read/write request coalescing codeTrond Myklebust2007-05-01
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Cleanup the coalescing codeTrond Myklebust2007-05-01
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: clean up the unstable write codeTrond Myklebust2007-04-21
| | | | | | | Get rid of the inlined #ifdefs. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NFS: Ensure PG_writeback is cleared when writeback failsTrond Myklebust2007-04-15
| | | | | | | | | | | | | | | | If the writebacks are cancelled via nfs_cancel_dirty_list, or due to the memory allocation failing in nfs_flush_one/nfs_flush_multi, then we must ensure that the PG_writeback flag is cleared. Also ensure that we actually own the PG_writeback flag whenever we schedule a new writeback by making nfs_set_page_writeback() return the value of test_set_page_writeback(). The PG_writeback page flag ends up replacing the functionality of the PG_FLUSHING nfs_page flag, so we rip that out too. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* NFS: Make nfs_updatepage() mark the page as dirty.Trond Myklebust2006-12-06
| | | | | | | This will ensure that we can call set_page_writeback() from within nfs_writepage(), which is always called with the page lock set. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Add nfs_set_page_dirty()Trond Myklebust2006-12-06
| | | | | | | | | | We will want to allow nfs_writepage() to distinguish between pages that have been marked as dirty by the VM, and those that have been marked as dirty by nfs_updatepage(). In the former case, the entire page will want to be written out, and so any requests that were pending need to be flushed out first. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Clean up nfs_scan_dirty()Trond Myklebust2006-12-06
| | | | | | Pass down struct writeback control. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Store the file system "fsid" value in the NFS super block.Trond Myklebust2006-06-09
| | | | | | | This should enable us to detect if we are crossing a mountpoint in the case where the server is exporting "nohide" mounts. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: Flesh out nfs_invalidate_page()Trond Myklebust2006-06-09
| | | | | | | In the case of a call to truncate_inode_pages(), we should really try to cancel any pending writes on the page. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* NFS: simplify inlined bit ops in nfs_page.hChuck Lever2006-01-06
| | | | | | | | | | Minor cleanup: inlined bit ops in nfs_page.h can be simpler. Test plan: Write-intensive workload against a server that requires COMMITs. Signed-off-by: Chuck Lever <cel@netapp.com> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] NFS: Replace nfs_page insertion sort with a radix sortTrond Myklebust2005-06-22
| | | | Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* [PATCH] NFS: Make searching and waiting on busy writeback requests more ↵Trond Myklebust2005-06-22
| | | | | | | | | efficient. Basically copies the VFS's method for tracking writebacks and applies it to the struct nfs_page. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
* Linux-2.6.12-rc2v2.6.12-rc2Linus Torvalds2005-04-16
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!
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