forked from luck/tmp_suning_uos_patched
orangefs: a fix and two cleanups and a merge conflict
Fix: Christoph Hellwig noticed that some logic I added to
orangefs_file_read_iter introduced a race condition, so he
sent a reversion patch. I had to modify his patch since
reverting at this point broke Orangefs.
Cleanup 1: Christoph Hellwig noticed that we were doing some unnecessary
work in orangefs_flush, so he sent in a patch that removed
the un-needed code.
Cleanup 2: Al Viro told me he had trouble building Orangefs. Orangefs
should be easy to build, even for Al :-). I looked back
at the test server build notes in orangefs.txt, just in case
that's where the trouble really is, and found a couple of
typos and made a couple of clarifications.
Merge Conflict: Stephen Rothwell reported that my modifications to
orangefs.txt caused a merge conflict with orangefs.rst
in Linux Next. I wasn't sure what to do, so I asked,
and Jonathan Corbet said not to worry about it and
just to report it to Linus.
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Merge tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux
Pull orangefs updates from Mike Marshall:
"A fix and two cleanups.
Fix:
- Christoph Hellwig noticed that some logic I added to
orangefs_file_read_iter introduced a race condition, so he sent a
reversion patch. I had to modify his patch since reverting at this
point broke Orangefs.
Cleanups:
- Christoph Hellwig noticed that we were doing some unnecessary work
in orangefs_flush, so he sent in a patch that removed the un-needed
code.
- Al Viro told me he had trouble building Orangefs. Orangefs should
be easy to build, even for Al :-).
I looked back at the test server build notes in orangefs.txt, just
in case that's where the trouble really is, and found a couple of
typos and made a couple of clarifications"
* tag 'for-linus-5.7-ofs1' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
orangefs: clarify build steps for test server in orangefs.txt
orangefs: don't mess with I_DIRTY_TIMES in orangefs_flush
orangefs: get rid of knob code...
This commit is contained in:
Linus Torvalds
commit
4e4bdcfa21
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@ -41,16 +41,6 @@ Documentation
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http://www.orangefs.org/documentation/
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Userspace Filesystem Source
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===========================
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http://www.orangefs.org/download
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Orangefs versions prior to 2.9.3 would not be compatible with the
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upstream version of the kernel client.
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Running ORANGEFS On a Single Server
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===================================
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@ -94,6 +84,14 @@ Mount the filesystem::
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mount -t pvfs2 tcp://localhost:3334/orangefs /pvfsmnt
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Userspace Filesystem Source
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===========================
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http://www.orangefs.org/download
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Orangefs versions prior to 2.9.3 would not be compatible with the
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upstream version of the kernel client.
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Building ORANGEFS on a Single Server
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====================================
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@ -107,18 +105,24 @@ default, we will probably be changing the default to LMDB soon.
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::
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./configure --prefix=/opt/ofs --with-db-backend=lmdb
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./configure --prefix=/opt/ofs --with-db-backend=lmdb --disable-usrint
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make
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make install
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Create an orangefs config file::
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Create an orangefs config file by running pvfs2-genconfig and
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specifying a target config file. Pvfs2-genconfig will prompt you
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through. Generally it works fine to take the defaults, but you
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should use your server's hostname, rather than "localhost" when
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it comes to that question::
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/opt/ofs/bin/pvfs2-genconfig /etc/pvfs2.conf
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Create an /etc/pvfs2tab file::
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Localhost is fine for your pvfs2tab file:
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echo tcp://localhost:3334/orangefs /pvfsmnt pvfs2 defaults,noauto 0 0 > \
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/etc/pvfs2tab
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@ -132,7 +136,7 @@ Bootstrap the server::
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Start the server::
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/opt/osf/sbin/pvfs2-server /etc/pvfs2.conf
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/opt/ofs/sbin/pvfs2-server /etc/pvfs2.conf
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Now the server should be running. Pvfs2-ls is a simple
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test to verify that the server is running::
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@ -142,11 +146,11 @@ test to verify that the server is running::
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If stuff seems to be working, load the kernel module and
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turn on the client core::
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/opt/ofs/sbin/pvfs2-client -p /opt/osf/sbin/pvfs2-client-core
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/opt/ofs/sbin/pvfs2-client -p /opt/ofs/sbin/pvfs2-client-core
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Mount your filesystem::
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mount -t pvfs2 tcp://localhost:3334/orangefs /pvfsmnt
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mount -t pvfs2 tcp://`hostname`:3334/orangefs /pvfsmnt
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Running xfstests
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@ -346,23 +346,8 @@ static ssize_t orangefs_file_read_iter(struct kiocb *iocb,
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struct iov_iter *iter)
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{
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int ret;
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struct orangefs_read_options *ro;
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orangefs_stats.reads++;
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/*
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* Remember how they set "count" in read(2) or pread(2) or whatever -
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* users can use count as a knob to control orangefs io size and later
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* we can try to help them fill as many pages as possible in readpage.
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*/
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if (!iocb->ki_filp->private_data) {
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iocb->ki_filp->private_data = kmalloc(sizeof *ro, GFP_KERNEL);
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if (!iocb->ki_filp->private_data)
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return(ENOMEM);
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ro = iocb->ki_filp->private_data;
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ro->blksiz = iter->count;
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}
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down_read(&file_inode(iocb->ki_filp)->i_rwsem);
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ret = orangefs_revalidate_mapping(file_inode(iocb->ki_filp));
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if (ret)
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@ -650,12 +635,6 @@ static int orangefs_lock(struct file *filp, int cmd, struct file_lock *fl)
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return rc;
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}
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static int orangefs_file_open(struct inode * inode, struct file *file)
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{
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file->private_data = NULL;
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return generic_file_open(inode, file);
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}
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static int orangefs_flush(struct file *file, fl_owner_t id)
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{
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/*
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@ -666,19 +645,8 @@ static int orangefs_flush(struct file *file, fl_owner_t id)
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* on an explicit fsync call. This duplicates historical OrangeFS
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* behavior.
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*/
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struct inode *inode = file->f_mapping->host;
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int r;
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kfree(file->private_data);
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file->private_data = NULL;
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if (inode->i_state & I_DIRTY_TIME) {
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spin_lock(&inode->i_lock);
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inode->i_state &= ~I_DIRTY_TIME;
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spin_unlock(&inode->i_lock);
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mark_inode_dirty_sync(inode);
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}
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r = filemap_write_and_wait_range(file->f_mapping, 0, LLONG_MAX);
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if (r > 0)
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return 0;
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@ -694,7 +662,7 @@ const struct file_operations orangefs_file_operations = {
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.lock = orangefs_lock,
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.unlocked_ioctl = orangefs_ioctl,
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.mmap = orangefs_file_mmap,
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.open = orangefs_file_open,
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.open = generic_file_open,
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.flush = orangefs_flush,
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.release = orangefs_file_release,
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.fsync = orangefs_fsync,
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@ -259,46 +259,19 @@ static int orangefs_readpage(struct file *file, struct page *page)
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pgoff_t index; /* which page */
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struct page *next_page;
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char *kaddr;
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struct orangefs_read_options *ro = file->private_data;
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loff_t read_size;
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loff_t roundedup;
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int buffer_index = -1; /* orangefs shared memory slot */
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int slot_index; /* index into slot */
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int remaining;
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/*
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* If they set some miniscule size for "count" in read(2)
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* (for example) then let's try to read a page, or the whole file
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* if it is smaller than a page. Once "count" goes over a page
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* then lets round up to the highest page size multiple that is
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* less than or equal to "count" and do that much orangefs IO and
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* try to fill as many pages as we can from it.
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*
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* "count" should be represented in ro->blksiz.
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*
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* inode->i_size = file size.
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* Get up to this many bytes from Orangefs at a time and try
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* to fill them into the page cache at once. Tests with dd made
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* this seem like a reasonable static number, if there was
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* interest perhaps this number could be made setable through
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* sysfs...
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*/
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if (ro) {
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if (ro->blksiz < PAGE_SIZE) {
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if (inode->i_size < PAGE_SIZE)
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read_size = inode->i_size;
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else
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read_size = PAGE_SIZE;
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} else {
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roundedup = ((PAGE_SIZE - 1) & ro->blksiz) ?
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((ro->blksiz + PAGE_SIZE) & ~(PAGE_SIZE -1)) :
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ro->blksiz;
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if (roundedup > inode->i_size)
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read_size = inode->i_size;
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else
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read_size = roundedup;
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}
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} else {
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read_size = PAGE_SIZE;
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}
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if (!read_size)
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read_size = PAGE_SIZE;
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read_size = 524288;
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if (PageDirty(page))
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orangefs_launder_page(page);
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@ -239,10 +239,6 @@ struct orangefs_write_range {
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kgid_t gid;
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};
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struct orangefs_read_options {
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ssize_t blksiz;
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};
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extern struct orangefs_stats orangefs_stats;
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/*
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Loading…
Reference in New Issue
Block a user