<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/fs/ceph/addr.c, branch v5.16</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>Merge tag 'ceph-for-5.16-rc1' of git://github.com/ceph/ceph-client</title>
<updated>2021-11-13T19:31:07+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2021-11-13T19:31:07+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=0ecca62beb12eeb13965ed602905c8bf53ac93d0'/>
<id>0ecca62beb12eeb13965ed602905c8bf53ac93d0</id>
<content type='text'>
Pull ceph updates from Ilya Dryomov:
 "One notable change here is that async creates and unlinks introduced
  in 5.7 are now enabled by default. This should greatly speed up things
  like rm, tar and rsync. To opt out, wsync mount option can be used.

  Other than that we have a pile of bug fixes all across the filesystem
  from Jeff, Xiubo and Kotresh and a metrics infrastructure rework from
  Luis"

* tag 'ceph-for-5.16-rc1' of git://github.com/ceph/ceph-client:
  ceph: add a new metric to keep track of remote object copies
  libceph, ceph: move ceph_osdc_copy_from() into cephfs code
  ceph: clean-up metrics data structures to reduce code duplication
  ceph: split 'metric' debugfs file into several files
  ceph: return the real size read when it hits EOF
  ceph: properly handle statfs on multifs setups
  ceph: shut down mount on bad mdsmap or fsmap decode
  ceph: fix mdsmap decode when there are MDS's beyond max_mds
  ceph: ignore the truncate when size won't change with Fx caps issued
  ceph: don't rely on error_string to validate blocklisted session.
  ceph: just use ci-&gt;i_version for fscache aux info
  ceph: shut down access to inode when async create fails
  ceph: refactor remove_session_caps_cb
  ceph: fix auth cap handling logic in remove_session_caps_cb
  ceph: drop private list from remove_session_caps_cb
  ceph: don't use -ESTALE as special return code in try_get_cap_refs
  ceph: print inode numbers instead of pointer values
  ceph: enable async dirops by default
  libceph: drop -&gt;monmap and err initialization
  ceph: convert to noop_direct_IO
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull ceph updates from Ilya Dryomov:
 "One notable change here is that async creates and unlinks introduced
  in 5.7 are now enabled by default. This should greatly speed up things
  like rm, tar and rsync. To opt out, wsync mount option can be used.

  Other than that we have a pile of bug fixes all across the filesystem
  from Jeff, Xiubo and Kotresh and a metrics infrastructure rework from
  Luis"

* tag 'ceph-for-5.16-rc1' of git://github.com/ceph/ceph-client:
  ceph: add a new metric to keep track of remote object copies
  libceph, ceph: move ceph_osdc_copy_from() into cephfs code
  ceph: clean-up metrics data structures to reduce code duplication
  ceph: split 'metric' debugfs file into several files
  ceph: return the real size read when it hits EOF
  ceph: properly handle statfs on multifs setups
  ceph: shut down mount on bad mdsmap or fsmap decode
  ceph: fix mdsmap decode when there are MDS's beyond max_mds
  ceph: ignore the truncate when size won't change with Fx caps issued
  ceph: don't rely on error_string to validate blocklisted session.
  ceph: just use ci-&gt;i_version for fscache aux info
  ceph: shut down access to inode when async create fails
  ceph: refactor remove_session_caps_cb
  ceph: fix auth cap handling logic in remove_session_caps_cb
  ceph: drop private list from remove_session_caps_cb
  ceph: don't use -ESTALE as special return code in try_get_cap_refs
  ceph: print inode numbers instead of pointer values
  ceph: enable async dirops by default
  libceph: drop -&gt;monmap and err initialization
  ceph: convert to noop_direct_IO
</pre>
</div>
</content>
</entry>
<entry>
<title>netfs, 9p, afs, ceph: Use folios</title>
<updated>2021-11-10T21:16:56+00:00</updated>
<author>
<name>David Howells</name>
<email>dhowells@redhat.com</email>
</author>
<published>2021-08-11T08:49:13+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=78525c74d9e7d1a6ce69bd4388f045f6e474a20b'/>
<id>78525c74d9e7d1a6ce69bd4388f045f6e474a20b</id>
<content type='text'>
Convert the netfs helper library to use folios throughout, convert the 9p
and afs filesystems to use folios in their file I/O paths and convert the
ceph filesystem to use just enough folios to compile.

With these changes, afs passes -g quick xfstests.

Changes
=======
ver #5:
 - Got rid of folio_end{io,_read,_write}() and inlined the stuff it does
   instead (Willy decided he didn't want this after all).

ver #4:
 - Fixed a bug in afs_redirty_page() whereby it didn't set the next page
   index in the loop and returned too early.
 - Simplified a check in v9fs_vfs_write_folio_locked()[1].
 - Undid a change to afs_symlink_readpage()[1].
 - Used offset_in_folio() in afs_write_end()[1].
 - Changed from using page_endio() to folio_end{io,_read,_write}()[1].

ver #2:
 - Add 9p foliation.

Signed-off-by: David Howells &lt;dhowells@redhat.com&gt;
Reviewed-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Tested-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Tested-by: Dominique Martinet &lt;asmadeus@codewreck.org&gt;
Tested-by: kafs-testing@auristor.com
cc: Matthew Wilcox (Oracle) &lt;willy@infradead.org&gt;
cc: Marc Dionne &lt;marc.dionne@auristor.com&gt;
cc: Ilya Dryomov &lt;idryomov@gmail.com&gt;
cc: Dominique Martinet &lt;asmadeus@codewreck.org&gt;
cc: v9fs-developer@lists.sourceforge.net
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/YYKa3bfQZxK5/wDN@casper.infradead.org/ [1]
Link: https://lore.kernel.org/r/2408234.1628687271@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/162877311459.3085614.10601478228012245108.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162981153551.1901565.3124454657133703341.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/163005745264.2472992.9852048135392188995.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163584187452.4023316.500389675405550116.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/163649328026.309189.1124218109373941936.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/163657852454.834781.9265101983152100556.stgit@warthog.procyon.org.uk/ # v5
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Convert the netfs helper library to use folios throughout, convert the 9p
and afs filesystems to use folios in their file I/O paths and convert the
ceph filesystem to use just enough folios to compile.

With these changes, afs passes -g quick xfstests.

Changes
=======
ver #5:
 - Got rid of folio_end{io,_read,_write}() and inlined the stuff it does
   instead (Willy decided he didn't want this after all).

ver #4:
 - Fixed a bug in afs_redirty_page() whereby it didn't set the next page
   index in the loop and returned too early.
 - Simplified a check in v9fs_vfs_write_folio_locked()[1].
 - Undid a change to afs_symlink_readpage()[1].
 - Used offset_in_folio() in afs_write_end()[1].
 - Changed from using page_endio() to folio_end{io,_read,_write}()[1].

ver #2:
 - Add 9p foliation.

Signed-off-by: David Howells &lt;dhowells@redhat.com&gt;
Reviewed-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Tested-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Tested-by: Dominique Martinet &lt;asmadeus@codewreck.org&gt;
Tested-by: kafs-testing@auristor.com
cc: Matthew Wilcox (Oracle) &lt;willy@infradead.org&gt;
cc: Marc Dionne &lt;marc.dionne@auristor.com&gt;
cc: Ilya Dryomov &lt;idryomov@gmail.com&gt;
cc: Dominique Martinet &lt;asmadeus@codewreck.org&gt;
cc: v9fs-developer@lists.sourceforge.net
cc: linux-afs@lists.infradead.org
cc: ceph-devel@vger.kernel.org
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/YYKa3bfQZxK5/wDN@casper.infradead.org/ [1]
Link: https://lore.kernel.org/r/2408234.1628687271@warthog.procyon.org.uk/ # rfc
Link: https://lore.kernel.org/r/162877311459.3085614.10601478228012245108.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/162981153551.1901565.3124454657133703341.stgit@warthog.procyon.org.uk/
Link: https://lore.kernel.org/r/163005745264.2472992.9852048135392188995.stgit@warthog.procyon.org.uk/ # v2
Link: https://lore.kernel.org/r/163584187452.4023316.500389675405550116.stgit@warthog.procyon.org.uk/ # v3
Link: https://lore.kernel.org/r/163649328026.309189.1124218109373941936.stgit@warthog.procyon.org.uk/ # v4
Link: https://lore.kernel.org/r/163657852454.834781.9265101983152100556.stgit@warthog.procyon.org.uk/ # v5
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: shut down access to inode when async create fails</title>
<updated>2021-11-08T02:29:51+00:00</updated>
<author>
<name>Jeff Layton</name>
<email>jlayton@kernel.org</email>
</author>
<published>2021-08-31T17:39:13+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=5d6451b1489ad1781a0778cc876bf26a21910413'/>
<id>5d6451b1489ad1781a0778cc876bf26a21910413</id>
<content type='text'>
Add proper error handling for when an async create fails. The inode
never existed, so any dirty caps or data are now toast. We already
d_drop the dentry in that case, but the now-stale inode may still be
around. We want to shut down access to these inodes, and ensure that
they can't harbor any more dirty data, which can cause problems at
umount time.

When this occurs, flag such inodes as being SHUTDOWN, and trash any caps
and cap flushes that may be in flight for them, and invalidate the
pagecache for the inode. Add a new helper that can check whether an
inode or an entire mount is now shut down, and call it instead of
accessing the mount_state directly in places where we test that now.

URL: https://tracker.ceph.com/issues/51279
Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Add proper error handling for when an async create fails. The inode
never existed, so any dirty caps or data are now toast. We already
d_drop the dentry in that case, but the now-stale inode may still be
around. We want to shut down access to these inodes, and ensure that
they can't harbor any more dirty data, which can cause problems at
umount time.

When this occurs, flag such inodes as being SHUTDOWN, and trash any caps
and cap flushes that may be in flight for them, and invalidate the
pagecache for the inode. Add a new helper that can check whether an
inode or an entire mount is now shut down, and call it instead of
accessing the mount_state directly in places where we test that now.

URL: https://tracker.ceph.com/issues/51279
Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: convert to noop_direct_IO</title>
<updated>2021-11-08T02:29:51+00:00</updated>
<author>
<name>Jeff Layton</name>
<email>jlayton@kernel.org</email>
</author>
<published>2021-09-23T11:50:08+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=9c43ff4490ef1d721877fdfdb4ff2d9bda93f391'/>
<id>9c43ff4490ef1d721877fdfdb4ff2d9bda93f391</id>
<content type='text'>
We have our own op, but the WARN_ON is not terribly helpful, and it's
otherwise identical to the noop one. Just use that.

Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Reviewed-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
We have our own op, but the WARN_ON is not terribly helpful, and it's
otherwise identical to the noop one. Just use that.

Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Reviewed-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client</title>
<updated>2021-09-08T22:50:32+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2021-09-08T22:50:32+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=8a05abd0c93841a7bbcf777ec1677a1ad9155793'/>
<id>8a05abd0c93841a7bbcf777ec1677a1ad9155793</id>
<content type='text'>
Pull ceph updates from Ilya Dryomov:

 - a set of patches to address fsync stalls caused by depending on
   periodic rather than triggered MDS journal flushes in some cases
   (Xiubo Li)

 - a fix for mtime effectively not getting updated in case of competing
   writers (Jeff Layton)

 - a couple of fixes for inode reference leaks and various WARNs after
   "umount -f" (Xiubo Li)

 - a new ceph.auth_mds extended attribute (Jeff Layton)

 - a smattering of fixups and cleanups from Jeff, Xiubo and Colin.

* tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client:
  ceph: fix dereference of null pointer cf
  ceph: drop the mdsc_get_session/put_session dout messages
  ceph: lockdep annotations for try_nonblocking_invalidate
  ceph: don't WARN if we're forcibly removing the session caps
  ceph: don't WARN if we're force umounting
  ceph: remove the capsnaps when removing caps
  ceph: request Fw caps before updating the mtime in ceph_write_iter
  ceph: reconnect to the export targets on new mdsmaps
  ceph: print more information when we can't find snaprealm
  ceph: add ceph_change_snap_realm() helper
  ceph: remove redundant initializations from mdsc and session
  ceph: cancel delayed work instead of flushing on mdsc teardown
  ceph: add a new vxattr to return auth mds for an inode
  ceph: remove some defunct forward declarations
  ceph: flush the mdlog before waiting on unsafe reqs
  ceph: flush mdlog before umounting
  ceph: make iterate_sessions a global symbol
  ceph: make ceph_create_session_msg a global symbol
  ceph: fix comment about short copies in ceph_write_end
  ceph: fix memory leak on decode error in ceph_handle_caps
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull ceph updates from Ilya Dryomov:

 - a set of patches to address fsync stalls caused by depending on
   periodic rather than triggered MDS journal flushes in some cases
   (Xiubo Li)

 - a fix for mtime effectively not getting updated in case of competing
   writers (Jeff Layton)

 - a couple of fixes for inode reference leaks and various WARNs after
   "umount -f" (Xiubo Li)

 - a new ceph.auth_mds extended attribute (Jeff Layton)

 - a smattering of fixups and cleanups from Jeff, Xiubo and Colin.

* tag 'ceph-for-5.15-rc1' of git://github.com/ceph/ceph-client:
  ceph: fix dereference of null pointer cf
  ceph: drop the mdsc_get_session/put_session dout messages
  ceph: lockdep annotations for try_nonblocking_invalidate
  ceph: don't WARN if we're forcibly removing the session caps
  ceph: don't WARN if we're force umounting
  ceph: remove the capsnaps when removing caps
  ceph: request Fw caps before updating the mtime in ceph_write_iter
  ceph: reconnect to the export targets on new mdsmaps
  ceph: print more information when we can't find snaprealm
  ceph: add ceph_change_snap_realm() helper
  ceph: remove redundant initializations from mdsc and session
  ceph: cancel delayed work instead of flushing on mdsc teardown
  ceph: add a new vxattr to return auth mds for an inode
  ceph: remove some defunct forward declarations
  ceph: flush the mdlog before waiting on unsafe reqs
  ceph: flush mdlog before umounting
  ceph: make iterate_sessions a global symbol
  ceph: make ceph_create_session_msg a global symbol
  ceph: fix comment about short copies in ceph_write_end
  ceph: fix memory leak on decode error in ceph_handle_caps
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: fix comment about short copies in ceph_write_end</title>
<updated>2021-09-02T20:49:16+00:00</updated>
<author>
<name>Jeff Layton</name>
<email>jlayton@kernel.org</email>
</author>
<published>2021-06-14T11:15:38+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=ce3a8732ae0d43a6d14aa24624c0f12b3e6281b9'/>
<id>ce3a8732ae0d43a6d14aa24624c0f12b3e6281b9</id>
<content type='text'>
Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Reviewed-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Reviewed-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: Fix race between hole punch and page fault</title>
<updated>2021-07-13T12:29:01+00:00</updated>
<author>
<name>Jan Kara</name>
<email>jack@suse.cz</email>
</author>
<published>2021-04-22T14:38:26+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=057ba5b24532aca202cb1ae8c246bde27de12763'/>
<id>057ba5b24532aca202cb1ae8c246bde27de12763</id>
<content type='text'>
Ceph has a following race between hole punching and page fault:

CPU1                                  CPU2
ceph_fallocate()
  ...
  ceph_zero_pagecache_range()
                                      ceph_filemap_fault()
                                        faults in page in the range being
                                        punched
  ceph_zero_objects()

And now we have a page in punched range with invalid data. Fix the
problem by using mapping-&gt;invalidate_lock similarly to other
filesystems. Note that using invalidate_lock also fixes a similar race
wrt -&gt;readpage().

CC: Jeff Layton &lt;jlayton@kernel.org&gt;
CC: ceph-devel@vger.kernel.org
Reviewed-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Jan Kara &lt;jack@suse.cz&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Ceph has a following race between hole punching and page fault:

CPU1                                  CPU2
ceph_fallocate()
  ...
  ceph_zero_pagecache_range()
                                      ceph_filemap_fault()
                                        faults in page in the range being
                                        punched
  ceph_zero_objects()

And now we have a page in punched range with invalid data. Fix the
problem by using mapping-&gt;invalidate_lock similarly to other
filesystems. Note that using invalidate_lock also fixes a similar race
wrt -&gt;readpage().

CC: Jeff Layton &lt;jlayton@kernel.org&gt;
CC: ceph-devel@vger.kernel.org
Reviewed-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Jan Kara &lt;jack@suse.cz&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: add IO size metrics support</title>
<updated>2021-06-28T22:15:51+00:00</updated>
<author>
<name>Xiubo Li</name>
<email>xiubli@redhat.com</email>
</author>
<published>2021-05-13T01:40:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=903f4fec78dd05a48fdccdf4539c040fb2d5bbf4'/>
<id>903f4fec78dd05a48fdccdf4539c040fb2d5bbf4</id>
<content type='text'>
This will collect IO's total size and then calculate the average
size, and also will collect the min/max IO sizes.

The debugfs will show the size metrics in bytes and will let the
userspace applications to switch to what they need.

URL: https://tracker.ceph.com/issues/49913
Signed-off-by: Xiubo Li &lt;xiubli@redhat.com&gt;
Reviewed-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
This will collect IO's total size and then calculate the average
size, and also will collect the min/max IO sizes.

The debugfs will show the size metrics in bytes and will let the
userspace applications to switch to what they need.

URL: https://tracker.ceph.com/issues/49913
Signed-off-by: Xiubo Li &lt;xiubli@redhat.com&gt;
Reviewed-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: make ceph_netfs_read_ops static</title>
<updated>2021-06-28T21:49:24+00:00</updated>
<author>
<name>Wei Yongjun</name>
<email>weiyongjun1@huawei.com</email>
</author>
<published>2021-05-14T06:39:53+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=675d4d8997ac1891aa143a049b10ce0f4d4a2117'/>
<id>675d4d8997ac1891aa143a049b10ce0f4d4a2117</id>
<content type='text'>
The sparse tool complains as follows:

fs/ceph/addr.c:316:37: warning:
 symbol 'ceph_netfs_read_ops' was not declared. Should it be static?

This symbol is not used outside of addr.c, so mark it static.

Reported-by: Hulk Robot &lt;hulkci@huawei.com&gt;
Signed-off-by: Wei Yongjun &lt;weiyongjun1@huawei.com&gt;
Reviewed-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The sparse tool complains as follows:

fs/ceph/addr.c:316:37: warning:
 symbol 'ceph_netfs_read_ops' was not declared. Should it be static?

This symbol is not used outside of addr.c, so mark it static.

Reported-by: Hulk Robot &lt;hulkci@huawei.com&gt;
Signed-off-by: Wei Yongjun &lt;weiyongjun1@huawei.com&gt;
Reviewed-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>ceph: remove bogus checks and WARN_ONs from ceph_set_page_dirty</title>
<updated>2021-06-28T21:49:24+00:00</updated>
<author>
<name>Jeff Layton</name>
<email>jlayton@kernel.org</email>
</author>
<published>2021-05-04T14:08:30+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=22d41cdcd3cfd467a4af074165357fcbea1c37f5'/>
<id>22d41cdcd3cfd467a4af074165357fcbea1c37f5</id>
<content type='text'>
The checks for page-&gt;mapping are odd, as set_page_dirty is an
address_space operation, and I don't see where it would be called on a
non-pagecache page.

The warning about the page lock also seems bogus.  The comment over
set_page_dirty() says that it can be called without the page lock in
some rare cases. I don't think we want to warn if that's the case.

Reported-by: Matthew Wilcox &lt;willy@infradead.org&gt;
Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The checks for page-&gt;mapping are odd, as set_page_dirty is an
address_space operation, and I don't see where it would be called on a
non-pagecache page.

The warning about the page lock also seems bogus.  The comment over
set_page_dirty() says that it can be called without the page lock in
some rare cases. I don't think we want to warn if that's the case.

Reported-by: Matthew Wilcox &lt;willy@infradead.org&gt;
Signed-off-by: Jeff Layton &lt;jlayton@kernel.org&gt;
Signed-off-by: Ilya Dryomov &lt;idryomov@gmail.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
