- 01 10月, 2013 2 次提交
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由 Miklos Szeredi 提交于
As Maxim Patlasov pointed out, it's possible to get a dirty page while it's copy is still under writeback, despite fuse_page_mkwrite() doing its thing (direct IO). This could result in two concurrent write request for the same offset, with data corruption if they get mixed up. To prevent this, fuse needs to check and delay such writes. This implementation does this by: 1. check if page is still under writeout, if so create a new, single page secondary request for it 2. chain this secondary request onto the in-flight request 2/a. if a seconday request for the same offset was already chained to the in-flight request, then just copy the contents of the page and discard the new secondary request. This makes sure that for each page will have at most two requests associated with it 3. when the in-flight request finished, send off all secondary requests chained onto it Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Doing dput(parent) is not valid in RCU walk mode. In RCU mode it would probably be okay to update the parent flags, but it's actually not necessary most of the time... So only set the FUSE_I_ADVISE_RDPLUS flag on the parent when the entry was recently initialized by READDIRPLUS. This is achieved by setting FUSE_I_INIT_RDPLUS on entries added by READDIRPLUS and only dropping out of RCU mode if this flag is set. FUSE_I_INIT_RDPLUS is cleared once the FUSE_I_ADVISE_RDPLUS flag is set in the parent. Reported-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> Cc: stable@vger.kernel.org
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- 03 9月, 2013 1 次提交
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由 Maxim Patlasov 提交于
The way how fuse calls truncate_pagecache() from fuse_change_attributes() is completely wrong. Because, w/o i_mutex held, we never sure whether 'oldsize' and 'attr->size' are valid by the time of execution of truncate_pagecache(inode, oldsize, attr->size). In fact, as soon as we released fc->lock in the middle of fuse_change_attributes(), we completely loose control of actions which may happen with given inode until we reach truncate_pagecache. The list of potentially dangerous actions includes mmap-ed reads and writes, ftruncate(2) and write(2) extending file size. The typical outcome of doing truncate_pagecache() with outdated arguments is data corruption from user point of view. This is (in some sense) acceptable in cases when the issue is triggered by a change of the file on the server (i.e. externally wrt fuse operation), but it is absolutely intolerable in scenarios when a single fuse client modifies a file without any external intervention. A real life case I discovered by fsx-linux looked like this: 1. Shrinking ftruncate(2) comes to fuse_do_setattr(). The latter sends FUSE_SETATTR to the server synchronously, but before getting fc->lock ... 2. fuse_dentry_revalidate() is asynchronously called. It sends FUSE_LOOKUP to the server synchronously, then calls fuse_change_attributes(). The latter updates i_size, releases fc->lock, but before comparing oldsize vs attr->size.. 3. fuse_do_setattr() from the first step proceeds by acquiring fc->lock and updating attributes and i_size, but now oldsize is equal to outarg.attr.size because i_size has just been updated (step 2). Hence, fuse_do_setattr() returns w/o calling truncate_pagecache(). 4. As soon as ftruncate(2) completes, the user extends file size by write(2) making a hole in the middle of file, then reads data from the hole either by read(2) or mmap-ed read. The user expects to get zero data from the hole, but gets stale data because truncate_pagecache() is not executed yet. The scenario above illustrates one side of the problem: not truncating the page cache even though we should. Another side corresponds to truncating page cache too late, when the state of inode changed significantly. Theoretically, the following is possible: 1. As in the previous scenario fuse_dentry_revalidate() discovered that i_size changed (due to our own fuse_do_setattr()) and is going to call truncate_pagecache() for some 'new_size' it believes valid right now. But by the time that particular truncate_pagecache() is called ... 2. fuse_do_setattr() returns (either having called truncate_pagecache() or not -- it doesn't matter). 3. The file is extended either by write(2) or ftruncate(2) or fallocate(2). 4. mmap-ed write makes a page in the extended region dirty. The result will be the lost of data user wrote on the fourth step. The patch is a hotfix resolving the issue in a simplistic way: let's skip dangerous i_size update and truncate_pagecache if an operation changing file size is in progress. This simplistic approach looks correct for the cases w/o external changes. And to handle them properly, more sophisticated and intrusive techniques (e.g. NFS-like one) would be required. I'd like to postpone it until the issue is well discussed on the mailing list(s). Changed in v2: - improved patch description to cover both sides of the issue. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz> Cc: stable@vger.kernel.org
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- 01 5月, 2013 1 次提交
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由 Miklos Szeredi 提交于
Without async DIO write requests to a single file were always serialized. With async DIO that's no longer the case. So don't turn on async DIO by default for fear of breaking backward compatibility. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 18 4月, 2013 3 次提交
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由 Maxim Patlasov 提交于
The patch improves error handling in fuse_direct_IO(): if we successfully submitted several fuse requests on behalf of synchronous direct write extending file and some of them failed, let's try to do our best to clean-up. Changed in v2: reuse fuse_do_setattr(). Thanks to Brian for suggestion. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Maxim Patlasov 提交于
The patch implements passing "struct fuse_io_priv *io" down the stack up to fuse_send_read/write where it is used to submit request asynchronously. io->async==0 designates synchronous processing. Non-trivial part of the patch is changes in fuse_direct_io(): resources like fuse requests and user pages cannot be released immediately in async case. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Maxim Patlasov 提交于
The patch implements a framework to process an IO request asynchronously. The idea is to associate several fuse requests with a single kiocb by means of fuse_io_priv structure. The structure plays the same role for FUSE as 'struct dio' for direct-io.c. The framework is supposed to be used like this: - someone (who wants to process an IO asynchronously) allocates fuse_io_priv and initializes it setting 'async' field to non-zero value. - as soon as fuse request is filled, it can be submitted (in non-blocking way) by fuse_async_req_send() - when all submitted requests are ACKed by userspace, io->reqs drops to zero triggering aio_complete() In case of IO initiated by libaio, aio_complete() will finish processing the same way as in case of dio_complete() calling aio_complete(). But the framework may be also used for internal FUSE use when initial IO request was synchronous (from user perspective), but it's beneficial to process it asynchronously. Then the caller should wait on kiocb explicitly and aio_complete() will wake the caller up. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 17 4月, 2013 2 次提交
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由 Maxim Patlasov 提交于
Existing flag fc->blocked is used to suspend request allocation both in case of many background request submitted and period of time before init_reply arrives from userspace. Next patch will skip blocking allocations of synchronous request (disregarding fc->blocked). This is mostly OK, but we still need to suspend allocations if init_reply is not arrived yet. The patch introduces flag fc->initialized which will serve this purpose. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Maxim Patlasov 提交于
There are two types of processing requests in FUSE: synchronous (via fuse_request_send()) and asynchronous (via adding to fc->bg_queue). Fortunately, the type of processing is always known in advance, at the time of request allocation. This preparatory patch utilizes this fact making fuse_get_req() aware about the type. Next patches will use it. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 07 2月, 2013 1 次提交
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由 Eric Wong 提交于
For some filesystems (e.g. GlusterFS), the cost of performing a normal readdir and readdirplus are identical. Since adaptively using readdirplus has no benefit for those systems, give users/filesystems the option to control adaptive readdirplus use. v2 of this patch incorporates Miklos's suggestion to simplify the code, as well as improving consistency of macro names and documentation. Signed-off-by: NEric Wong <normalperson@yhbt.net> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 01 2月, 2013 2 次提交
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由 Feng Shuo 提交于
Use the same adaptive readdirplus mechanism as NFS: http://permalink.gmane.org/gmane.linux.nfs/49299 If the user space implementation wants to disable readdirplus temporarily, it could just return ENOTSUPP. Then kernel will recall it with readdir. Signed-off-by: NFeng Shuo <steve.shuo.feng@gmail.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Anatol Pomozov 提交于
Commit c69e8d9c added rcu lock to fuse/dir.c It was assuming that 'task' is some other process but in fact this parameter always equals to 'current'. Inline this parameter to make it more readable and remove RCU lock as it is not needed when access current process credentials. Signed-off-by: NAnatol Pomozov <anatol.pomozov@gmail.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 24 1月, 2013 5 次提交
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由 Miklos Szeredi 提交于
Fix the following sparse warnings: fs/fuse/file.c:1216:43: warning: cast removes address space of expression fs/fuse/file.c:1216:43: warning: incorrect type in initializer (different address spaces) fs/fuse/file.c:1216:43: expected void [noderef] <asn:1>*iov_base fs/fuse/file.c:1216:43: got void *<noident> fs/fuse/file.c:1241:43: warning: cast removes address space of expression fs/fuse/file.c:1241:43: warning: incorrect type in initializer (different address spaces) fs/fuse/file.c:1241:43: expected void [noderef] <asn:1>*iov_base fs/fuse/file.c:1241:43: got void *<noident> fs/fuse/file.c:1267:43: warning: cast removes address space of expression fs/fuse/file.c:1267:43: warning: incorrect type in initializer (different address spaces) fs/fuse/file.c:1267:43: expected void [noderef] <asn:1>*iov_base fs/fuse/file.c:1267:43: got void *<noident> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Maxim Patlasov 提交于
The ability to save page pointers along with lengths and offsets in fuse_req will be useful to cover several iovec-s with a single fuse_req. Per-request page_offset is removed because anybody who need it can use req->page_descs[0].offset instead. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Maxim Patlasov 提交于
The patch categorizes all fuse_get_req() invocations into two categories: - fuse_get_req_nopages(fc) - when caller doesn't care about req->pages - fuse_get_req(fc, n) - when caller need n page pointers (n > 0) Adding fuse_get_req_nopages() helps to avoid numerous fuse_get_req(fc, 0) scattered over code. Now it's clear from the first glance when a caller need fuse_req with page pointers. The patch doesn't make any logic changes. In multi-page case, it silly allocates array of FUSE_MAX_PAGES_PER_REQ page pointers. This will be amended by future patches. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Maxim Patlasov 提交于
The patch removes inline array of FUSE_MAX_PAGES_PER_REQ page pointers from fuse_req. Instead of that, req->pages may now point either to small inline array or to an array allocated dynamically. This essentially means that all callers of fuse_request_alloc[_nofs] should pass the number of pages needed explicitly. The patch doesn't make any logic changes. Signed-off-by: NMaxim Patlasov <mpatlasov@parallels.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Anand V. Avati 提交于
This patch implements readdirplus support in FUSE, similar to NFS. The payload returned in the readdirplus call contains 'fuse_entry_out' structure thereby providing all the necessary inputs for 'faking' a lookup() operation on the spot. If the dentry and inode already existed (for e.g. in a re-run of ls -l) then just the inode attributes timeout and dentry timeout are refreshed. With a simple client->network->server implementation of a FUSE based filesystem, the following performance observations were made: Test: Performing a filesystem crawl over 20,000 files with sh# time ls -lR /mnt Without readdirplus: Run 1: 18.1s Run 2: 16.0s Run 3: 16.2s With readdirplus: Run 1: 4.1s Run 2: 3.8s Run 3: 3.8s The performance improvement is significant as it avoided 20,000 upcalls calls (lookup). Cache consistency is no worse than what already is. Signed-off-by: NAnand V. Avati <avati@redhat.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 15 11月, 2012 1 次提交
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由 Eric W. Biederman 提交于
Use kuid_t and kgid_t in struct fuse_conn and struct fuse_mount_data. The connection between between a fuse filesystem and a fuse daemon is established when a fuse filesystem is mounted and provided with a file descriptor the fuse daemon created by opening /dev/fuse. For now restrict the communication of uids and gids between the fuse filesystem and the fuse daemon to the initial user namespace. Enforce this by verifying the file descriptor passed to the mount of fuse was opened in the initial user namespace. Ensuring the mount happens in the initial user namespace is not necessary as mounts from non-initial user namespaces are not yet allowed. In fuse_req_init_context convert the currrent fsuid and fsgid into the initial user namespace for the request that will be sent to the fuse daemon. In fuse_fill_attr convert the uid and gid passed from the fuse daemon from the initial user namespace into kuids and kgids. In iattr_to_fattr called from fuse_setattr convert kuids and kgids into the uids and gids in the initial user namespace before passing them to the fuse filesystem. In fuse_change_attributes_common called from fuse_dentry_revalidate, fuse_permission, fuse_geattr, and fuse_setattr, and fuse_iget convert the uid and gid from the fuse daemon into a kuid and a kgid to store on the fuse inode. By default fuse mounts are restricted to task whose uid, suid, and euid matches the fuse user_id and whose gid, sgid, and egid matches the fuse group id. Convert the user_id and group_id mount options into kuids and kgids at mount time, and use uid_eq and gid_eq to compare the in fuse_allow_task. Cc: Miklos Szeredi <miklos@szeredi.hu> Acked-by: NSerge Hallyn <serge.hallyn@canonical.com> Signed-off-by: NEric W. Biederman <ebiederm@xmission.com>
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- 18 7月, 2012 1 次提交
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由 Brian Foster 提交于
FUSE_AUTO_INVAL_DATA is provided to enable updated/auto cache invalidation logic. Signed-off-by: NBrian Foster <bfoster@redhat.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 14 5月, 2012 1 次提交
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由 Pavel Shilovsky 提交于
Now we store attr->ino at inode->i_ino, return attr->ino at the first time and then return inode->i_ino if the attribute timeout isn't expired. That's wrong on 32 bit platforms because attr->ino is 64 bit and inode->i_ino is 32 bit in this case. Fix this by saving 64 bit ino in fuse_inode structure and returning it every time we call getattr. Also squash attr->ino into inode->i_ino explicitly. Signed-off-by: NPavel Shilovsky <piastry@etersoft.ru> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 26 4月, 2012 1 次提交
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由 Miklos Szeredi 提交于
If userspace filesystem doesn't support fallocate, remember this and don't send request next time. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 04 1月, 2012 1 次提交
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由 Al Viro 提交于
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 13 12月, 2011 2 次提交
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由 John Muir 提交于
Allows a FUSE file-system to tell the kernel when a file or directory is deleted. If the specified dentry has the specified inode number, the kernel will unhash it. The current 'fuse_notify_inval_entry' does not cause the kernel to clean up directories that are in use properly, and as a result the users of those directories see incorrect semantics from the file-system. The error condition seen when 'fuse_notify_inval_entry' is used to notify of a deleted directory is avoided when 'fuse_notify_delete' is used instead. The following scenario demonstrates the difference: 1. User A chdirs into 'testdir' and starts reading 'testfile'. 2. User B rm -rf 'testdir'. 3. User B creates 'testdir'. 4. User C chdirs into 'testdir'. If you run the above within the same machine on any file-system (including fuse file-systems), there is no problem: user C is able to chdir into the new testdir. The old testdir is removed from the dentry tree, but still open by user A. If operations 2 and 3 are performed via the network such that the fuse file-system uses one of the notify functions to tell the kernel that the nodes are gone, then the following error occurs for user C while user A holds the original directory open: muirj@empacher:~> ls /test/testdir ls: cannot access /test/testdir: No such file or directory The issue here is that the kernel still has a dentry for testdir, and so it is requesting the attributes for the old directory, while the file-system is responding that the directory no longer exists. If on the other hand, if the file-system can notify the kernel that the directory is deleted using the new 'fuse_notify_delete' function, then the above ls will find the new directory as expected. Signed-off-by: NJohn Muir <john@jmuir.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Multiplexing filesystems may want to support ioctls on the underlying files and directores (e.g. FS_IOC_{GET,SET}FLAGS). Ioctl support on directories was missing so add it now. Reported-by: NAntonio SJ Musumeci <bile@landofbile.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 08 8月, 2011 1 次提交
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由 Miklos Szeredi 提交于
Commit a9ff4f87 "fuse: support BSD locking semantics" overlooked a number of issues with supporing flock locks over existing POSIX locking infrastructure: - it's not backward compatible, passing flock(2) calls to userspace unconditionally (if userspace sets FUSE_POSIX_LOCKS) - it doesn't cater for the fact that flock locks are automatically unlocked on file release - it doesn't take into account the fact that flock exclusive locks (write locks) don't need an fd opened for write. The last one invalidates the original premise of the patch that flock locks can be emulated with POSIX locks. This patch fixes the first two issues. The last one needs to be fixed in userspace if the filesystem assumed that a write lock will happen only on a file operned for write (as in the case of the current fuse library). Reported-by: NSebastian Pipping <webmaster@hartwork.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 21 7月, 2011 1 次提交
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由 Josef Bacik 提交于
Btrfs needs to be able to control how filemap_write_and_wait_range() is called in fsync to make it less of a painful operation, so push down taking i_mutex and the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some file systems can drop taking the i_mutex altogether it seems, like ext3 and ocfs2. For correctness sake I just pushed everything down in all cases to make sure that we keep the current behavior the same for everybody, and then each individual fs maintainer can make up their mind about what to do from there. Thanks, Acked-by: NJan Kara <jack@suse.cz> Signed-off-by: NJosef Bacik <josef@redhat.com> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 21 3月, 2011 1 次提交
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由 Miklos Szeredi 提交于
Reduce the size of struct fuse_request by removing cuse_init_out from the request structure and allocating it dinamically instead. CC: Tejun Heo <tj@kernel.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 25 2月, 2011 1 次提交
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由 Miklos Szeredi 提交于
Single threaded NTFS-3G could get stuck if a delayed RELEASE reply triggered a DESTROY request via path_put(). Fix this by a) making RELEASE requests synchronous, whenever possible, on fuseblk filesystems b) if not possible (triggered by an asynchronous read/write) then do the path_put() in a separate thread with schedule_work(). Reported-by: NOliver Neukum <oneukum@suse.de> Cc: stable@kernel.org Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 08 12月, 2010 2 次提交
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由 Miklos Szeredi 提交于
Terje Malmedal reports that a fuse filesystem with 32 million inodes on a machine with lots of memory can take up to 30 minutes to process FORGET requests when all those inodes are evicted from the icache. To solve this, create a BATCH_FORGET request that allows up to about 8000 FORGET requests to be sent in a single message. This request is only sent if userspace supports interface version 7.16 or later, otherwise fall back to sending individual FORGET messages. Reported-by: NTerje Malmedal <terje.malmedal@usit.uio.no> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Terje Malmedal reports that a fuse filesystem with 32 million inodes on a machine with lots of memory can go unresponsive for up to 30 minutes when all those inodes are evicted from the icache. The reason is that FORGET messages, sent when the inode is evicted, are queued up together with regular filesystem requests, and while the huge queue of FORGET messages are processed no other filesystem operation can proceed. Since a full fuse request structure is allocated for each inode, these take up quite a bit of memory as well. To solve these issues, create a slim 'fuse_forget_link' structure containing just the minimum of information required to send the FORGET request and chain these on a separate queue. When userspace is asking for a request make sure that FORGET and non-FORGET requests are selected fairly: for each 8 non-FORGET allow 16 FORGET requests. This will make sure FORGETs do not pile up, yet other requests are also allowed to proceed while the queued FORGETs are processed. Reported-by: NTerje Malmedal <terje.malmedal@usit.uio.no> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 12 7月, 2010 2 次提交
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由 Miklos Szeredi 提交于
Userspace filesystem can request data to be retrieved from the inode's mapping. This request is synchronous and the retrieved data is queued as a new request. If the write to the fuse device returns an error then the retrieve request was not completed and a reply will not be sent. Only present pages are returned in the retrieve reply. Retrieving stops when it finds a non-present page and only data prior to that is returned. This request doesn't change the dirty state of pages. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
Userspace filesystem can request data to be stored in the inode's mapping. This request is synchronous and has no reply. If the write to the fuse device returns an error then the store request was not fully completed (but may have updated some pages). If the stored data overflows the current file size, then the size is extended, similarly to a write(2) on the filesystem. Pages which have been completely stored are marked uptodate. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 28 5月, 2010 1 次提交
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由 Christoph Hellwig 提交于
Signed-off-by: NChristoph Hellwig <hch@lst.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 25 5月, 2010 1 次提交
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由 Miklos Szeredi 提交于
When splicing buffers to the fuse device with SPLICE_F_MOVE, try to move pages from the pipe buffer into the page cache. This allows populating the fuse filesystem's cache without ever touching the page contents, i.e. zero copy read capability. The following steps are performed when trying to move a page into the page cache: - buf->ops->confirm() to make sure the new page is uptodate - buf->ops->steal() to try to remove the new page from it's previous place - remove_from_page_cache() on the old page - add_to_page_cache_locked() on the new page If any of the above steps fail (non fatally) then the code falls back to copying the page. In particular ->steal() will fail if there are external references (other than the page cache and the pipe buffer) to the page. Also since the remove_from_page_cache() + add_to_page_cache_locked() are non-atomic it is possible that the page cache is repopulated in between the two and add_to_page_cache_locked() will fail. This could be fixed by creating a new atomic replace_page_cache_page() function. fuse_readpages_end() needed to be reworked so it works even if page->mapping is NULL for some or all pages which can happen if the add_to_page_cache_locked() failed. A number of sanity checks were added to make sure the stolen pages don't have weird flags set, etc... These could be moved into generic splice/steal code. Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 24 9月, 2009 1 次提交
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由 npiggin@suse.de 提交于
Update some fs code to make use of new helper functions introduced in the previous patch. Should be no significant change in behaviour (except CIFS now calls send_sig under i_lock, via inode_newsize_ok). Reviewed-by: NChristoph Hellwig <hch@lst.de> Acked-by: NMiklos Szeredi <miklos@szeredi.hu> Cc: linux-nfs@vger.kernel.org Cc: Trond.Myklebust@netapp.com Cc: linux-cifs-client@lists.samba.org Cc: sfrench@samba.org Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
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- 16 9月, 2009 1 次提交
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由 Csaba Henk 提交于
Make the max_background and congestion_threshold parameters of a FUSE mount tunable at runtime by adding the respective knobs to its directory within the fusectl filesystem. Signed-off-by: NCsaba Henk <csaba@gluster.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 07 7月, 2009 1 次提交
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由 Csaba Henk 提交于
The practical values for these limits depend on the design of the filesystem server so let userspace set them at initialization time. Signed-off-by: NCsaba Henk <csaba@gluster.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 01 7月, 2009 2 次提交
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由 John Muir 提交于
Add notification messages that allow the filesystem to invalidate VFS caches. Two notifications are added: 1) inode invalidation - invalidate cached attributes - invalidate a range of pages in the page cache (this is optional) 2) dentry invalidation - try to invalidate a subtree in the dentry cache Care must be taken while accessing the 'struct super_block' for the mount, as it can go away while an invalidation is in progress. To prevent this, introduce a rw-semaphore, that is taken for read during the invalidation and taken for write in the ->kill_sb callback. Cc: Csaba Henk <csaba@gluster.com> Cc: Anand Avati <avati@zresearch.com> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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由 Miklos Szeredi 提交于
This patch lets filesystems handle masking the file mode on creation. This is needed if filesystem is using ACLs. - The CREATE, MKDIR and MKNOD requests are extended with a "umask" parameter. - A new FUSE_DONT_MASK flag is added to the INIT request/reply. With this the filesystem may request that the create mode is not masked. CC: Jean-Pierre André <jean-pierre.andre@wanadoo.fr> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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- 28 4月, 2009 1 次提交
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由 Tejun Heo 提交于
Export the following symbols for CUSE. fuse_conn_put() fuse_conn_get() fuse_conn_kill() fuse_send_init() fuse_do_open() fuse_sync_release() fuse_direct_io() fuse_do_ioctl() fuse_file_poll() fuse_request_alloc() fuse_get_req() fuse_put_request() fuse_request_send() fuse_abort_conn() fuse_dev_release() fuse_dev_operations Signed-off-by: NTejun Heo <tj@kernel.org> Signed-off-by: NMiklos Szeredi <mszeredi@suse.cz>
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