- 31 10月, 2016 1 次提交
-
-
由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 08 10月, 2016 1 次提交
-
-
由 Andreas Gruenbacher 提交于
All filesystems that support xattrs by now do so via xattr handlers. They all define sb->s_xattr, and their getxattr, setxattr, and removexattr inode operations use the generic inode operations. On filesystems that don't support xattrs, the xattr inode operations are all NULL, and sb->s_xattr is also NULL. This means that we can remove the getxattr, setxattr, and removexattr inode operations and directly call the generic handlers, or better, inline expand those handlers into fs/xattr.c. Filesystems that do not support xattrs on some inodes should clear the IOP_XATTR i_opflags flag in those inodes. (Right now, some filesystems have checks to disable xattrs on some inodes in the ->list, ->get, and ->set xattr handler operations instead.) The IOP_XATTR flag is automatically cleared in inodes of filesystems that don't have xattr support. In orangefs, symlinks do have a setxattr iop but no getxattr iop. Add a check for symlinks to orangefs_inode_getxattr to preserve the current, weird behavior; that check may not be necessary though. Signed-off-by: NAndreas Gruenbacher <agruenba@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 29 9月, 2016 1 次提交
-
-
由 Andreas Gruenbacher 提交于
Signed-off-by: NAndreas Gruenbacher <agruenba@redhat.com> Signed-off-by: NJiri Kosina <jkosina@suse.cz>
-
- 27 9月, 2016 2 次提交
-
-
由 Miklos Szeredi 提交于
Generated patch: sed -i "s/\.rename2\t/\.rename\t\t/" `git grep -wl rename2` sed -i "s/\brename2\b/rename/g" `git grep -wl rename2` Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com>
-
由 Miklos Szeredi 提交于
No in-tree uses remain. Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com>
-
- 01 8月, 2016 1 次提交
-
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 27 7月, 2016 1 次提交
-
-
由 Minchan Kim 提交于
We have allowed migration for only LRU pages until now and it was enough to make high-order pages. But recently, embedded system(e.g., webOS, android) uses lots of non-movable pages(e.g., zram, GPU memory) so we have seen several reports about troubles of small high-order allocation. For fixing the problem, there were several efforts (e,g,. enhance compaction algorithm, SLUB fallback to 0-order page, reserved memory, vmalloc and so on) but if there are lots of non-movable pages in system, their solutions are void in the long run. So, this patch is to support facility to change non-movable pages with movable. For the feature, this patch introduces functions related to migration to address_space_operations as well as some page flags. If a driver want to make own pages movable, it should define three functions which are function pointers of struct address_space_operations. 1. bool (*isolate_page) (struct page *page, isolate_mode_t mode); What VM expects on isolate_page function of driver is to return *true* if driver isolates page successfully. On returing true, VM marks the page as PG_isolated so concurrent isolation in several CPUs skip the page for isolation. If a driver cannot isolate the page, it should return *false*. Once page is successfully isolated, VM uses page.lru fields so driver shouldn't expect to preserve values in that fields. 2. int (*migratepage) (struct address_space *mapping, struct page *newpage, struct page *oldpage, enum migrate_mode); After isolation, VM calls migratepage of driver with isolated page. The function of migratepage is to move content of the old page to new page and set up fields of struct page newpage. Keep in mind that you should indicate to the VM the oldpage is no longer movable via __ClearPageMovable() under page_lock if you migrated the oldpage successfully and returns 0. If driver cannot migrate the page at the moment, driver can return -EAGAIN. On -EAGAIN, VM will retry page migration in a short time because VM interprets -EAGAIN as "temporal migration failure". On returning any error except -EAGAIN, VM will give up the page migration without retrying in this time. Driver shouldn't touch page.lru field VM using in the functions. 3. void (*putback_page)(struct page *); If migration fails on isolated page, VM should return the isolated page to the driver so VM calls driver's putback_page with migration failed page. In this function, driver should put the isolated page back to the own data structure. 4. non-lru movable page flags There are two page flags for supporting non-lru movable page. * PG_movable Driver should use the below function to make page movable under page_lock. void __SetPageMovable(struct page *page, struct address_space *mapping) It needs argument of address_space for registering migration family functions which will be called by VM. Exactly speaking, PG_movable is not a real flag of struct page. Rather than, VM reuses page->mapping's lower bits to represent it. #define PAGE_MAPPING_MOVABLE 0x2 page->mapping = page->mapping | PAGE_MAPPING_MOVABLE; so driver shouldn't access page->mapping directly. Instead, driver should use page_mapping which mask off the low two bits of page->mapping so it can get right struct address_space. For testing of non-lru movable page, VM supports __PageMovable function. However, it doesn't guarantee to identify non-lru movable page because page->mapping field is unified with other variables in struct page. As well, if driver releases the page after isolation by VM, page->mapping doesn't have stable value although it has PAGE_MAPPING_MOVABLE (Look at __ClearPageMovable). But __PageMovable is cheap to catch whether page is LRU or non-lru movable once the page has been isolated. Because LRU pages never can have PAGE_MAPPING_MOVABLE in page->mapping. It is also good for just peeking to test non-lru movable pages before more expensive checking with lock_page in pfn scanning to select victim. For guaranteeing non-lru movable page, VM provides PageMovable function. Unlike __PageMovable, PageMovable functions validates page->mapping and mapping->a_ops->isolate_page under lock_page. The lock_page prevents sudden destroying of page->mapping. Driver using __SetPageMovable should clear the flag via __ClearMovablePage under page_lock before the releasing the page. * PG_isolated To prevent concurrent isolation among several CPUs, VM marks isolated page as PG_isolated under lock_page. So if a CPU encounters PG_isolated non-lru movable page, it can skip it. Driver doesn't need to manipulate the flag because VM will set/clear it automatically. Keep in mind that if driver sees PG_isolated page, it means the page have been isolated by VM so it shouldn't touch page.lru field. PG_isolated is alias with PG_reclaim flag so driver shouldn't use the flag for own purpose. [opensource.ganesh@gmail.com: mm/compaction: remove local variable is_lru] Link: http://lkml.kernel.org/r/20160618014841.GA7422@leo-test Link: http://lkml.kernel.org/r/1464736881-24886-3-git-send-email-minchan@kernel.orgSigned-off-by: NGioh Kim <gi-oh.kim@profitbricks.com> Signed-off-by: NMinchan Kim <minchan@kernel.org> Signed-off-by: NGanesh Mahendran <opensource.ganesh@gmail.com> Acked-by: NVlastimil Babka <vbabka@suse.cz> Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com> Cc: Rik van Riel <riel@redhat.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Hugh Dickins <hughd@google.com> Cc: Rafael Aquini <aquini@redhat.com> Cc: Jonathan Corbet <corbet@lwn.net> Cc: John Einar Reitan <john.reitan@foss.arm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 25 7月, 2016 1 次提交
-
-
由 Miklos Szeredi 提交于
Allow filesystem to initialize dentry at allocation time. Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 01 7月, 2016 1 次提交
-
-
由 Matthew Wilcox 提交于
Commit 7eaceacc removed ->sync_page, but a few mentions of it still existed in documentation and comments, Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 30 6月, 2016 2 次提交
-
-
由 Miklos Szeredi 提交于
Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com>
-
由 Miklos Szeredi 提交于
Add missing documentation for the d_op->d_real() method and d_real() helper. Signed-off-by: NMiklos Szeredi <mszeredi@redhat.com>
-
- 02 5月, 2016 1 次提交
-
-
由 Christoph Hellwig 提交于
Including blkdev_direct_IO and dax_do_io. It has to be ki_pos to actually work, so eliminate the superflous argument. Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 05 4月, 2016 1 次提交
-
-
由 Kirill A. Shutemov 提交于
Mostly direct substitution with occasional adjustment or removing outdated comments. Signed-off-by: NKirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: NMichal Hocko <mhocko@suse.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 31 12月, 2015 1 次提交
-
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 24 7月, 2015 1 次提交
-
-
由 Jan Kara 提交于
The functionality of ext3 is fully supported by ext4 driver. Major distributions (SUSE, RedHat) already use ext4 driver to handle ext3 filesystems for quite some time. There is some ugliness in mm resulting from jbd cleaning buffers in a dirty page without cleaning page dirty bit and also support for buffer bouncing in the block layer when stable pages are required is there only because of jbd. So let's remove the ext3 driver. This saves us some 28k lines of duplicated code. Acked-by: NTheodore Ts'o <tytso@mit.edu> Signed-off-by: NJan Kara <jack@suse.cz>
-
- 09 6月, 2015 1 次提交
-
-
由 Thomas de Beauchene 提交于
Updated struct file_operations documentation in vfs.txt to match current implementation Signed-off-by: NThomas de Beauchene <chauvo_t@epitech.eu> Signed-off-by: NJonathan Corbet <corbet@lwn.net>
-
- 15 5月, 2015 1 次提交
-
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 11 5月, 2015 3 次提交
-
-
由 Al Viro 提交于
only one instance looks at that argument at all; that sole exception wants inode rather than dentry. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
由 Al Viro 提交于
its only use is getting passed to nd_jump_link(), which can obtain it from current->nameidata Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
由 Al Viro 提交于
a) instead of storing the symlink body (via nd_set_link()) and returning an opaque pointer later passed to ->put_link(), ->follow_link() _stores_ that opaque pointer (into void * passed by address by caller) and returns the symlink body. Returning ERR_PTR() on error, NULL on jump (procfs magic symlinks) and pointer to symlink body for normal symlinks. Stored pointer is ignored in all cases except the last one. Storing NULL for opaque pointer (or not storing it at all) means no call of ->put_link(). b) the body used to be passed to ->put_link() implicitly (via nameidata). Now only the opaque pointer is. In the cases when we used the symlink body to free stuff, ->follow_link() now should store it as opaque pointer in addition to returning it. Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 12 4月, 2015 2 次提交
-
-
由 Omar Sandoval 提交于
Now that no one is using rw, remove it completely. Signed-off-by: NOmar Sandoval <osandov@osandov.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
由 Al Viro 提交于
no remaining users Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 17 2月, 2015 1 次提交
-
-
由 Matthew Wilcox 提交于
All callers of get_xip_mem() are now gone. Remove checks for it, initialisers of it, documentation of it and the only implementation of it. Also remove mm/filemap_xip.c as it is now empty. Also remove documentation of the long-gone get_xip_page(). Signed-off-by: NMatthew Wilcox <matthew.r.wilcox@intel.com> Cc: Andreas Dilger <andreas.dilger@intel.com> Cc: Boaz Harrosh <boaz@plexistor.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 06 11月, 2014 1 次提交
-
-
由 Joe Perches 提交于
seq_printf functions shouldn't really check the return value. Checking seq_has_overflowed() occasionally is used instead. Update vfs documentation. Link: http://lkml.kernel.org/p/e37e6e7b76acbdcc3bb4ab2a57c8f8ca1ae11b9a.1412031505.git.joe@perches.com Cc: David S. Miller <davem@davemloft.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: NJoe Perches <joe@perches.com> [ did a few clean ups ] Signed-off-by: NSteven Rostedt <rostedt@goodmis.org>
-
- 24 10月, 2014 1 次提交
-
-
由 Miklos Szeredi 提交于
Add a new inode operation i_op->dentry_open(). This is for stacked filesystems that want to return a struct file from a different filesystem. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
-
- 09 10月, 2014 1 次提交
-
-
由 Kirill Smelkov 提交于
The function which calls s_op->alloc_inode() is not inode_alloc(), but instead alloc_inode() which lives in fs/inode.c . The typo was there from the beginning from 5ea626aa (VFS: update documentation, 2005) - there was no standalone inode_alloc() for the whole kernel history. Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by: NKirill Smelkov <kirr@nexedi.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 08 10月, 2014 2 次提交
-
-
由 Jeff Layton 提交于
Now that we have a saner internal API for managing leases, we no longer need to mandate that the inode->i_lock be held over most of the lease code. Push it down into generic_add_lease and generic_delete_lease. Signed-off-by: NJeff Layton <jlayton@primarydata.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
由 Jeff Layton 提交于
In later patches, we're going to add a new lock_manager_operation to finish setting up the lease while still holding the i_lock. To do this, we'll need to pass a little bit of info in the fcntl setlease case (primarily an fasync structure). Plumb the extra pointer into there in advance of that. We declare this pointer as a void ** to make it clear that this is private info, and that the caller isn't required to set this unless the lm_setup specifically requires it. Signed-off-by: NJeff Layton <jlayton@primarydata.com> Reviewed-by: NChristoph Hellwig <hch@lst.de>
-
- 08 8月, 2014 1 次提交
-
-
由 NeilBrown 提交于
In REF-walk mode, ->d_manage can return -EISDIR to indicate that the dentry is not really a mount trap (or even a mount point) and that any mounts or any DCACHE_NEED_AUTOMOUNT flag should be ignored. RCU-walk mode doesn't currently support this, so if there is a dentry with DCACHE_NEED_AUTOMOUNT set but which shouldn't be a mount-trap, lookup_fast() will always drop in REF-walk mode. With this patch, an -EISDIR from ->d_manage will always cause mounts and automounts to be ignored, both in REF-walk and RCU-walk. Bug-fixed-by: NDan Carpenter <dan.carpenter@oracle.com> Cc: Ian Kent <raven@themaw.net> Signed-off-by: NNeilBrown <neilb@suse.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 07 5月, 2014 2 次提交
-
-
由 Al Viro 提交于
Beginning to introduce those. Just the callers for now, and it's clumsier than it'll eventually become; once we finish converting aio_read and aio_write instances, the things will get nicer. For now, these guys are in parallel to ->aio_read() and ->aio_write(); they take iocb and iov_iter, with everything in iov_iter already validated. File offset is passed in iocb->ki_pos, iov/nr_segs - in iov_iter. Main concerns in that series are stack footprint and ability to split the damn thing cleanly. [fix from Peter Ujfalusi <peter.ujfalusi@ti.com> folded] Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
由 Al Viro 提交于
unmodified, for now Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 02 4月, 2014 1 次提交
-
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 01 4月, 2014 1 次提交
-
-
由 Miklos Szeredi 提交于
Add new renameat2 syscall, which is the same as renameat with an added flags argument. Pass flags to vfs_rename() and to i_op->rename() as well. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> Reviewed-by: NJ. Bruce Fields <bfields@redhat.com>
-
- 31 1月, 2014 1 次提交
-
-
由 Richard Yao 提交于
->readv, ->writev and ->sendfile have been removed while ->show_fdinfo has been added. The documentation should reflect this. Signed-off-by: NRichard Yao <ryao@gentoo.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 17 9月, 2013 1 次提交
-
-
由 Miklos Szeredi 提交于
Fix documentation of ->atomic_open() and related functions: finish_open() and finish_no_open(). Also add details that seem to be unclear and a source of bugs (some of which are fixed in the following series). Cc-ing maintainers of all filesystems implementing ->atomic_open(). Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Sage Weil <sage@inktank.com> Cc: Steve French <sfrench@samba.org> Cc: Steven Whitehouse <swhiteho@redhat.com> Cc: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 04 7月, 2013 2 次提交
-
-
由 Mel Gorman 提交于
Signed-off-by: NMel Gorman <mgorman@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
由 Mel Gorman 提交于
The documentation for address_space_operations is partially out of date. Signed-off-by: NMel Gorman <mgorman@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
-
- 03 7月, 2013 1 次提交
-
-
由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
- 29 6月, 2013 2 次提交
-
-
由 Linus Torvalds 提交于
Instances either don't look at it at all (the majority of cases) or only want it to find the superblock (which can be had as dentry->d_sb). A few cases that want more are actually safe with dentry->d_inode - the only precaution needed is the check that it hadn't been replaced with NULL by rmdir() or by overwriting rename(), which case should be simply treated as cache miss. Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-
由 Al Viro 提交于
everything's converted to ->iterate() Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
-