summaryrefslogtreecommitdiffstats
path: root/fs
AgeCommit message (Collapse)AuthorFilesLines
2017-04-24udf: use kmap_atomic for memcpy copyingFabian Frederick2-9/+9
Use temporary mapping for memory copying operations. To avoid any sleeping problem, mark_inode_dirty(inode) was moved after kunmap() in udf_adinicb_readpage() down_write(&iinfo->i_data_sem) set before kmap_atomic() in udf_expand_file_adinicb() Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-24udf: use octal for permissionsFabian Frederick2-8/+8
According to commit f90774e1fd27 ("checkpatch: look for symbolic permissions and suggest octal instead") Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19quota: Remove dquot_quotactl_opsJan Kara1-12/+0
Nobody uses them anymore. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19reiserfs: Remove i_attrs_to_sd_attrs()Jan Kara3-28/+1
Now that all places setting inode->i_flags that should be reflected in on-disk flags are gone, we can remove i_attrs_to_sd_attrs() call. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19reiserfs: Remove useless setting of i_flagsJan Kara1-4/+0
reiserfs_new_inode() clears IMMUTABLE and APPEND flags from a symlink i_flags however a few lines below in sd_attrs_to_i_attrs() we will happily overwrite i_flags with whatever we inherited from the directory. Since this behavior is there for ages just remove the useless setting of i_flags. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19jfs: Remove jfs_get_inode_flags()Jan Kara4-22/+0
Now that all places setting inode->i_flags that should be reflected in on-disk flags are gone, we can remove jfs_get_inode_flags() call. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19ext2: Remove ext2_get_inode_flags()Jan Kara3-22/+0
Now that all places setting inode->i_flags that should be reflected in on-disk flags are gone, we can remove ext2_get_inode_flags() call. Reviewed-by: Andreas Dilger <adilger@dilger.ca> Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19ext4: Remove ext4_get_inode_flags()Jan Kara3-29/+0
Now that all places setting inode->i_flags that should be reflected in on-disk flags are gone, we can remove ext4_get_inode_flags() call. Reviewed-by: Andreas Dilger <adilger@dilger.ca> Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19quota: Stop setting IMMUTABLE and NOATIME flags on quota filesJan Kara1-14/+5
Currently we set IMMUTABLE and NOATIME flags on quota files to stop userspace from messing with them. Now that all filesystems set these flags in their quota_on handlers, we can stop setting the flags in generic quota code. This will allow filesystems to stop copying i_flags to their on-disk flags on various occasions. Reviewed-by: Andreas Dilger <adilger@dilger.ca> Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19jfs: Set flags on quota files directlyJan Kara1-2/+77
Currently immutable and noatime flags on quota files are set by quota code which requires us to copy inode->i_flags to our on disk version of quota flags in GETFLAGS ioctl and copy_to_dinode(). Move to setting / clearing these on-disk flags directly to save that copying. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19ext2: Set flags on quota files directlyJan Kara1-2/+76
Currently immutable and noatime flags on quota files are set by quota code which requires us to copy inode->i_flags to our on disk version of quota flags in GETFLAGS ioctl and __ext2_write_inode(). Move to setting / clearing these on-disk flags directly to save that copying. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19reiserfs: Set flags on quota files directlyJan Kara1-3/+54
Currently immutable and noatime flags on quota files are set by quota code which requires us to copy inode->i_flags to our on disk version of quota flags in GETFLAGS ioctl and when writing stat item. Move to setting / clearing these on-disk flags directly to save that copying. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-19ext4: Set flags on quota files directlyJan Kara1-6/+56
Currently immutable and noatime flags on quota files are set by quota code which requires us to copy inode->i_flags to our on disk version of quota flags in GETFLAGS ioctl and ext4_do_update_inode(). Move to setting / clearing these on-disk flags directly to save that copying. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-05reiserfs: Protect dquot_writeback_dquots() by s_umount semaphoreJan Kara1-0/+14
dquot_writeback_dquots() expects s_umount semaphore to be held to protect it from other concurrent quota operations. reiserfs_sync_fs() can call dquot_writeback_dquots() without holding s_umount semaphore when called from flush_old_commits(). Fix the problem by grabbing s_umount in flush_old_commits(). However we have to be careful and use only trylock since reiserfs_cancel_old_sync() can be waiting for flush_old_commits() to complete while holding s_umount semaphore. Possible postponing of sync work is not a big deal though as that is only an opportunistic flush. Fixes: 9d1ccbe70e0b14545caad12dc73adb3605447df0 Reported-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-05reiserfs: Make cancel_old_flush() reliableJan Kara3-7/+17
Currently canceling of delayed work that flushes old data using cancel_old_flush() does not prevent work from being requeued. Thus in theory new work can be queued after cancel_old_flush() from reiserfs_freeze() has run. This will become larger problem once flush_old_commits() can requeue the work itself. Fix the problem by recording in sbi->work_queue that flushing work is canceled and should not be requeued. Signed-off-by: Jan Kara <jack@suse.cz>
2017-04-05ext2: Call dquot_writeback_dquots() with s_umount heldJan Kara3-7/+7
ext2_sync_fs() could be called without s_umount semaphore held when called through ext2_write_super() from __ext2_write_inode(). This function then calls dquot_writeback_dquots() which relies on s_umount to be held for protection against other quota operations. In fact __ext2_write_inode() does not need all the functionality ext2_write_super() provides. It is enough to just write the superblock. So use ext2_sync_super() instead. Fixes: 9d1ccbe70e0b14545caad12dc73adb3605447df0 Reported-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Jan Kara <jack@suse.cz>
2017-03-23reiserfs: avoid a -Wmaybe-uninitialized warningArnd Bergmann2-2/+1
The latest gcc-7.0.1 snapshot warns about an unintialized variable use: In file included from fs/reiserfs/lbalance.c:8:0: fs/reiserfs/lbalance.c: In function 'leaf_item_bottle.isra.3': fs/reiserfs/reiserfs.h:1279:13: error: '*((void *)&n_ih+8).v' may be used uninitialized in this function [-Werror=maybe-uninitialized] v2->v = (v2->v & cpu_to_le64(15ULL << 60)) | cpu_to_le64(offset); ~~^~~ fs/reiserfs/reiserfs.h:1279:13: error: '*((void *)&n_ih+8).v' may be used uninitialized in this function [-Werror=maybe-uninitialized] v2->v = (v2->v & cpu_to_le64(15ULL << 60)) | cpu_to_le64(offset); This happens because the offset/type pair that is stored in ih.key.u.k_offset_v2 is actually uninitialized when we call set_le_ih_k_offset() and set_le_ih_k_type(). After we have called both, all data is correct, but the first of the two reads uninitialized data for the type field and writes it back before it gets overwritten. This works around the warning by initializing the k_offset_v2 through the slightly larger memcpy(). [JK: Remove now unused define and make it obvious we initialize the key] Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jan Kara <jack@suse.cz>
2017-03-20f2fs: combine nat_bits and free_nid_bitmap cacheChao Yu1-78/+47
Both nat_bits cache and free_nid_bitmap cache provide same functionality as a intermediate cache between free nid cache and disk, but with different granularity of indicating free nid range, and different persistence policy. nat_bits cache provides better persistence ability, and free_nid_bitmap provides better granularity. In this patch we combine advantage of both caches, so finally policy of the intermediate cache would be: - init: load free nid status from nat_bits into free_nid_bitmap - lookup: scan free_nid_bitmap before load NAT blocks - update: update free_nid_bitmap in real-time - persistence: udpate and persist nat_bits in checkpoint This patch also resolves performance regression reported by lkp-robot. commit: 4ac912427c4214d8031d9ad6fbc3bc75e71512df ("f2fs: introduce free nid bitmap") d00030cf9cd0bb96fdccc41e33d3c91dcbb672ba ("f2fs: use __set{__clear}_bit_le") 1382c0f3f9d3f936c8bc42ed1591cf7a593ef9f7 ("f2fs: combine nat_bits and free_nid_bitmap cache") 4ac912427c4214d8 d00030cf9cd0bb96fdccc41e33 1382c0f3f9d3f936c8bc42ed15 ---------------- -------------------------- -------------------------- %stddev %change %stddev %change %stddev \ | \ | \ 77863 ± 0% +2.1% 79485 ± 1% +50.8% 117404 ± 0% aim7.jobs-per-min 231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% aim7.time.elapsed_time 231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% aim7.time.elapsed_time.max 896604 ± 0% -0.8% 889221 ± 3% -20.2% 715260 ± 1% aim7.time.involuntary_context_switches 2394 ± 1% +4.6% 2503 ± 1% +3.7% 2481 ± 2% aim7.time.maximum_resident_set_size 6240 ± 0% -1.5% 6145 ± 1% -14.1% 5360 ± 1% aim7.time.system_time 1111357 ± 3% +1.9% 1132509 ± 2% -6.2% 1041932 ± 2% aim7.time.voluntary_context_switches ... Signed-off-by: Chao Yu <yuchao0@huawei.com> Tested-by: Xiaolong Ye <xiaolong.ye@intel.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-20f2fs: skip scanning free nid bitmap of full NAT blocksChao Yu3-6/+30
This patch adds to account free nids for each NAT blocks, and while scanning all free nid bitmap, do check count and skip lookuping in full NAT block. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-20f2fs: use __set{__clear}_bit_leJaegeuk Kim2-10/+10
This patch uses __set{__clear}_bit_le for highter speed. Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-20f2fs: declare static functionsJaegeuk Kim1-3/+4
This is to avoid build warning reported by kbuild test robot. Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-20f2fs: don't overwrite node block by SSRJaegeuk Kim1-0/+6
This patch fixes that SSR can overwrite previous warm node block consisting of a node chain since the last checkpoint. Fixes: 5b6c6be2d878 ("f2fs: use SSR for warm node as well") Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2017-03-17Merge tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfsLinus Torvalds12-26/+88
Pull NFS client fixes from Anna Schumaker: "We have a handful of stable fixes to fix kernel warnings and other bugs that have been around for a while. We've also found a few other reference counting bugs and memory leaks since the initial 4.11 pull. Stable Bugfixes: - Fix decrementing nrequests in NFS v4.2 COPY to fix kernel warnings - Prevent a double free in async nfs4_exchange_id() - Squelch a kbuild sparse complaint for xprtrdma Other Bugfixes: - Fix a typo (NFS_ATTR_FATTR_GROUP_NAME) that causes a memory leak - Fix a reference leak that causes kernel warnings - Make nfs4_cb_sv_ops static to fix a sparse warning - Respect a server's max size in CREATE_SESSION - Handle errors from nfs4_pnfs_ds_connect - Flexfiles layout shouldn't mark devices as unavailable" * tag 'nfs-for-4.11-2' of git://git.linux-nfs.org/projects/anna/linux-nfs: pNFS/flexfiles: never nfs4_mark_deviceid_unavailable pNFS: return status from nfs4_pnfs_ds_connect NFSv4.1 respect server's max size in CREATE_SESSION NFS prevent double free in async nfs4_exchange_id nfs: make nfs4_cb_sv_ops static xprtrdma: Squelch kbuild sparse complaint NFS: fix the fault nrequests decreasing for nfs_inode COPY NFSv4: fix a reference leak caused WARNING messages nfs4: fix a typo of NFS_ATTR_FATTR_GROUP_NAME
2017-03-17pNFS/flexfiles: never nfs4_mark_deviceid_unavailableWeston Andros Adamson4-10/+31
The flexfiles layout should never mark a device unavailable. Move nfs4_mark_deviceid_unavailable out of nfs4_pnfs_ds_connect and call directly from files layout where it's still needed. The flexfiles driver still handles marked devices in error paths, but will now print a rate limited warning. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-17pNFS: return status from nfs4_pnfs_ds_connectWeston Andros Adamson6-6/+48
The nfs4_pnfs_ds_connect path can call rpc_create which can fail or it can wait on another context to reach the same failure. This checks that the rpc_create succeeded and returns the error to the caller. When an error is returned, both the files and flexfiles layouts will return NULL from _prepare_ds(). The flexfiles layout will also return the layout with the error NFS4ERR_NXIO. Signed-off-by: Weston Andros Adamson <dros@primarydata.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-17NFSv4.1 respect server's max size in CREATE_SESSIONOlga Kornievskaia1-2/+2
Currently client doesn't respect max sizes server returns in CREATE_SESSION. nfs4_session_set_rwsize() gets called and server->rsize, server->wsize are 0 so they never get set to the sizes returned by the server. Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-17NFS prevent double free in async nfs4_exchange_idOlga Kornievskaia1-5/+4
Since rpc_task is async, the release function should be called which will free the impl_id, scope, and owner. Trond pointed at 2 more problems: -- use of client pointer after free in the nfs4_exchangeid_release() function -- cl_count mismatch if rpc_run_task() isn't run Fixes: 8d89bd70bc9 ("NFS setup async exchange_id") Signed-off-by: Olga Kornievskaia <kolga@netapp.com> Cc: stable@vger.kernel.org # 4.9 Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-17nfs: make nfs4_cb_sv_ops staticJason Yan1-2/+2
Fixes the following sparse warning: fs/nfs/callback.c:235:21: warning: symbol 'nfs4_cb_sv_ops' was not declared. Should it be static? Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-17NFS: fix the fault nrequests decreasing for nfs_inode COPYKinglong Mee1-2/+4
The nfs_commit_file for NFSv4.2's COPY operation goes through the commit path for normal WRITE, but without increase nrequests, so, the nrequests decreased in nfs_commit_release_pages is fault. After that, the nrequests will be wrong. [ 5670.299881] ------------[ cut here ]------------ [ 5670.300295] WARNING: CPU: 0 PID: 27656 at fs/nfs/inode.c:127 nfs_clear_inode+0x66/0x90 [nfs] [ 5670.300558] Modules linked in: nfsv4(E) nfs(E) fscache(E) tun bridge stp llc fuse ip_set nfnetlink vmw_vsock_vmci_transport vsock snd_seq_midi snd_seq_midi_event ppdev f2fs coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_ens1371 intel_rapl_perf gameport snd_ac97_codec vmw_balloon ac97_bus snd_seq snd_pcm joydev snd_rawmidi snd_timer snd_seq_device snd soundcore nfit parport_pc parport acpi_cpufreq tpm_tis tpm_tis_core tpm i2c_piix4 vmw_vmci shpchp nfsd auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c vmwgfx drm_kms_helper ttm drm e1000 crc32c_intel mptspi scsi_transport_spi serio_raw mptscsih mptbase ata_generic pata_acpi fjes [last unloaded: fscache] [ 5670.302925] CPU: 0 PID: 27656 Comm: umount.nfs4 Tainted: G W E 4.11.0-rc1+ #519 [ 5670.303292] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/02/2015 [ 5670.304094] Call Trace: [ 5670.304510] dump_stack+0x63/0x86 [ 5670.304917] __warn+0xcb/0xf0 [ 5670.305276] warn_slowpath_null+0x1d/0x20 [ 5670.305661] nfs_clear_inode+0x66/0x90 [nfs] [ 5670.306093] nfs4_evict_inode+0x61/0x70 [nfsv4] [ 5670.306480] evict+0xbb/0x1c0 [ 5670.306888] dispose_list+0x4d/0x70 [ 5670.307233] evict_inodes+0x178/0x1a0 [ 5670.307579] generic_shutdown_super+0x44/0xf0 [ 5670.307985] nfs_kill_super+0x21/0x40 [nfs] [ 5670.308325] deactivate_locked_super+0x43/0x70 [ 5670.308698] deactivate_super+0x5a/0x60 [ 5670.309036] cleanup_mnt+0x3f/0x90 [ 5670.309407] __cleanup_mnt+0x12/0x20 [ 5670.309837] task_work_run+0x80/0xa0 [ 5670.310162] exit_to_usermode_loop+0x89/0x90 [ 5670.310497] syscall_return_slowpath+0xaa/0xb0 [ 5670.310875] entry_SYSCALL_64_fastpath+0xa7/0xa9 [ 5670.311197] RIP: 0033:0x7f1bb3617fe7 [ 5670.311545] RSP: 002b:00007ffecbabb828 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 5670.311906] RAX: 0000000000000000 RBX: 0000000001dca1f0 RCX: 00007f1bb3617fe7 [ 5670.312239] RDX: 000000000000000c RSI: 0000000000000001 RDI: 0000000001dc83c0 [ 5670.312653] RBP: 0000000001dc83c0 R08: 0000000000000001 R09: 0000000000000000 [ 5670.312998] R10: 0000000000000755 R11: 0000000000000206 R12: 00007ffecbabc66a [ 5670.313335] R13: 0000000001dc83a0 R14: 0000000000000000 R15: 0000000000000000 [ 5670.313758] ---[ end trace bf4bfe7764e4eb40 ]--- Cc: linux-kernel@vger.kernel.org Fixes: 67911c8f18 ("NFS: Add nfs_commit_file()") Signed-off-by: Kinglong Mee <kinglongmee@gmail.com> Cc: stable@vger.kernel.org # 4.7+ Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2017-03-17Merge tag 'afs-20170316' of ↵Linus Torvalds13-222/+269
git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs Pull AFS fixes from David Howells: "Fixes to the AFS filesystem in the kernel. They fix a variety of bugs. These include some issues fixed for consistency with other AFS implementations: - handle AFS mode bits better - use the client mtime rather than the server mtime in the protocol - handle the server returning more or less data than was requested in a FetchData call - distinguish mountpoints from symlinks based on the mode bits rather than preemptively reading every symlink to find out what it actually represents One other notable change for the user is that files are now flushed on close analogously with other network filesystems" * tag 'afs-20170316' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs: (28 commits) afs: Don't wait for page writeback with the page lock held afs: ->writepage() shouldn't call clear_page_dirty_for_io() afs: Fix abort on signal while waiting for call completion afs: Fix an off-by-one error in afs_send_pages() afs: Fix afs_kill_pages() afs: Fix page leak in afs_write_begin() afs: Don't set PG_error on local EINTR or ENOMEM when filling a page afs: Populate and use client modification time afs: Better abort and net error handling afs: Invalid op ID should abort with RXGEN_OPCODE afs: Fix the maths in afs_fs_store_data() afs: Use a bvec rather than a kvec in afs_send_pages() afs: Make struct afs_read::remain 64-bit afs: Fix AFS read bug afs: Prevent callback expiry timer overflow afs: Migrate vlocation fields to 64-bit afs: security: Replace rcu_assign_pointer() with RCU_INIT_POINTER() afs: inode: Replace rcu_assign_pointer() with RCU_INIT_POINTER() afs: Distinguish mountpoints from symlinks by file mode alone afs: Flush outstanding writes when an fd is closed ...
2017-03-16Merge tag 'xfs-4.11-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds6-18/+122
Pull xfs fix from Darrick Wong: "Here's a single fix for -rc3 to improve input validation on inline directory data to prevent buffer overruns due to corrupt metadata" * tag 'xfs-4.11-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: verify inline directory data forks
2017-03-16afs: Don't wait for page writeback with the page lock heldDavid Howells1-5/+4
Drop the page lock before waiting for page writeback. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: ->writepage() shouldn't call clear_page_dirty_for_io()David Howells1-3/+3
The ->writepage() op shouldn't call clear_page_dirty_for_io() as that has already been called by the caller. Fix afs_writepage() by moving the call out of afs_write_back_from_locked_page() to afs_writepages_region() where it is needed. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Fix abort on signal while waiting for call completionDavid Howells1-13/+6
Fix the way in which a call that's in progress and being waited for is aborted in the case that EINTR is detected. We should be sending RX_USER_ABORT rather than RX_CALL_DEAD as the abort code. Note that since the only two ways out of the loop are if the call completes or if a signal happens, the kill-the-call clause after the loop has finished can only happen in the case of EINTR. This means that we only have one abort case to deal with, not two, and the "KWC" case can never happen and so can be deleted. Note further that simply aborting the call isn't necessarily the best thing here since at this point: the request has been entirely sent and it's likely the server will do the operation anyway - whether we abort it or not. In future, we should punt the handling of the remainder of the call off to a background thread. Reported-by: Marc Dionne <marc.c.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Fix an off-by-one error in afs_send_pages()David Howells1-1/+1
afs_send_pages() should only put the call into the AFS_CALL_AWAIT_REPLY state if it has sent all the pages - but the check it makes is incorrect and sometimes it will finish the loop early. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Fix afs_kill_pages()David Howells1-3/+7
Fix afs_kill_pages() in two ways: (1) If a writeback has been partially flushed, then if we try and kill the pages it contains, some of them may no longer be undergoing writeback and end_page_writeback() will assert. Fix this by checking to see whether the page in question is actually undergoing writeback before ending that writeback. (2) The loop that scans for pages to kill doesn't increase the first page index, and so the loop may not terminate, but it will try to process the same pages over and over again. Fix this by increasing the first page index to one after the last page we processed. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Fix page leak in afs_write_begin()David Howells1-2/+5
afs_write_begin() leaks a ref and a lock on a page if afs_fill_page() fails. Fix the leak by unlocking and releasing the page in the error path. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Don't set PG_error on local EINTR or ENOMEM when filling a pageDavid Howells1-2/+10
Don't set PG_error on a page if we get local EINTR or ENOMEM when filling a page for writing. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Populate and use client modification timeMarc Dionne2-10/+10
The inode timestamps should be set from the client time in the status received from the server, rather than the server time which is meant for internal server use. Set AFS_SET_MTIME and populate the mtime for operations that take an input status, such as file/dir creation and StoreData. If an input time is not provided the server will set the vnode times based on the current server time. In a situation where the server has some skew with the client, this could lead to the client seeing a timestamp in the future for a file that it just created or wrote. Signed-off-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Better abort and net error handlingDavid Howells1-8/+27
If we receive a network error, a remote abort or a protocol error whilst we're still transmitting data, make sure we return an appropriate error to the caller rather than ESHUTDOWN or ECONNABORTED. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Invalid op ID should abort with RXGEN_OPCODEDavid Howells2-1/+3
When we are given an invalid operation ID, we should abort that with RXGEN_OPCODE rather than RX_INVALID_OPERATION. Also map RXGEN_OPCODE to -ENOTSUPP. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Fix the maths in afs_fs_store_data()David Howells1-1/+1
afs_fs_store_data() works out of the size of the write it's going to make, but it uses 32-bit unsigned subtraction in one place that gets automatically cast to loff_t. However, if to < offset, then the number goes negative, but as the result isn't signed, this doesn't get sign-extended to 64-bits when placed in a loff_t. Fix by casting the operands to loff_t. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Use a bvec rather than a kvec in afs_send_pages()David Howells1-45/+52
Use a bvec rather than a kvec in afs_send_pages() as we don't then have to call kmap() in advance. This allows us to pass the array of contiguous pages that we extracted through to rxrpc in one go rather than passing a single page at a time. Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Make struct afs_read::remain 64-bitDavid Howells2-5/+5
Make struct afs_read::remain 64-bit so that it can handle huge transfers if we ever request them or the server decides to give us a bit extra data (the other fields there are already 64-bit). Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marc Dionne <marc.dionne@auristor.com>
2017-03-16afs: Fix AFS read bugDavid Howells1-1/+1
Fix a bug in AFS read whereby the request page afs_read::index isn't incremented after calling ->page_done() if ->remain reaches 0, indicating that the data read is complete. Without this a NULL pointer exception happens when ->page_done() is called twice for the last page because the page clearing loop will call it also and afs_readpages_page_done() clears the current entry in the page list. BUG: unable to handle kernel NULL pointer dereference at (null) IP: afs_readpages_page_done+0x21/0xa4 [kafs] PGD 0 Oops: 0002 [#1] SMP Modules linked in: kafs(E) CPU: 2 PID: 3002 Comm: md5sum Tainted: G E 4.10.0-fscache #485 Hardware name: ASUS All Series/H97-PLUS, BIOS 2306 10/09/2014 task: ffff8804017d86c0 task.stack: ffff8803fc1d8000 RIP: 0010:afs_readpages_page_done+0x21/0xa4 [kafs] RSP: 0018:ffff8803fc1db978 EFLAGS: 00010282 RAX: ffff880405d39af8 RBX: 0000000000000000 RCX: ffff880407d83ed4 RDX: 0000000000000000 RSI: ffff880405d39a00 RDI: ffff880405c6f400 RBP: ffff8803fc1db988 R08: 0000000000000000 R09: 0000000000000001 R10: ffff8803fc1db820 R11: ffff88040cf56000 R12: ffff8804088f1780 R13: ffff8804017d86c0 R14: ffff8804088f1780 R15: 0000000000003840 FS: 00007f8154469700(0000) GS:ffff88041fb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000004016ec000 CR4: 00000000001406e0 Call Trace: afs_deliver_fs_fetch_data+0x5b9/0x60e [kafs] ? afs_make_call+0x316/0x4e8 [kafs] ? afs_make_call+0x359/0x4e8 [kafs] afs_deliver_to_call+0x173/0x2e8 [kafs] ? afs_make_call+0x316/0x4e8 [kafs] afs_make_call+0x37a/0x4e8 [kafs] ? wake_up_q+0x4f/0x4f ? __init_waitqueue_head+0x36/0x49 afs_fs_fetch_data+0x21c/0x227 [kafs] ? afs_fs_fetch_data+0x21c/0x227 [kafs] afs_vnode_fetch_data+0xf3/0x1d2 [kafs] afs_readpages+0x314/0x3fd [kafs] __do_page_cache_readahead+0x208/0x2c5 ondemand_readahead+0x3a2/0x3b7 ? ondemand_readahead+0x3a2/0x3b7 page_cache_async_readahead+0x5e/0x67 generic_file_read_iter+0x23b/0x70c ? __inode_security_revalidate+0x2f/0x62 __vfs_read+0xc4/0xe8 vfs_read+0xd1/0x15a SyS_read+0x4c/0x89 do_syscall_64+0x80/0x191 entry_SYSCALL64_slow_path+0x25/0x25 Reported-by: Marc Dionne <marc.dionne@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com> Tested-by: Marc Dionne <marc.dionne@auristor.com>
2017-03-16afs: Prevent callback expiry timer overflowTina Ruchandani3-6/+7
get_seconds() returns real wall-clock seconds. On 32-bit systems this value will overflow in year 2038 and beyond. This patch changes afs_vnode record to use ktime_get_real_seconds() instead, for the fields cb_expires and cb_expires_at. Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Migrate vlocation fields to 64-bitTina Ruchandani4-16/+20
get_seconds() returns real wall-clock seconds. On 32-bit systems this value will overflow in year 2038 and beyond. This patch changes afs's vlocation record to use ktime_get_real_seconds() instead, for the fields time_of_death and update_at. Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: security: Replace rcu_assign_pointer() with RCU_INIT_POINTER()Andreea-Cristina Bernat1-1/+1
The use of "rcu_assign_pointer()" is NULLing out the pointer. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: inode: Replace rcu_assign_pointer() with RCU_INIT_POINTER()Andreea-Cristina Bernat1-1/+1
The use of "rcu_assign_pointer()" is NULLing out the pointer. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Signed-off-by: David Howells <dhowells@redhat.com>
2017-03-16afs: Distinguish mountpoints from symlinks by file mode aloneDavid Howells3-68/+15
In AFS, mountpoints appear as symlinks with mode 0644 and normal symlinks have mode 0777, so use this to distinguish them rather than reading the content and parsing it. In the case of a mountpoint, the symlink body is a formatted string indicating the location of the target volume. Note that with this, kAFS no longer 'pre-fetches' the contents of symlinks, so afs_readpage() may fail with an access-denial because when the VFS calls d_automount(), it wraps the call in an credentials override that sets the initial creds - thereby preventing access to the caller's keyrings and the authentication keys held therein. To this end, a patch reverting that change to the VFS is required also. Reported-by: Jeffrey Altman <jaltman@auristor.com> Signed-off-by: David Howells <dhowells@redhat.com>
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-12 23:31:52 +0000