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2016-10-11Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull more vfs updates from Al Viro: ">rename2() work from Miklos + current_time() from Deepa" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: Replace current_fs_time() with current_time() fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps fs: Replace CURRENT_TIME with current_time() for inode timestamps fs: proc: Delete inode time initializations in proc_alloc_inode() vfs: Add current_time() api vfs: add note about i_op->rename changes to porting fs: rename "rename2" i_op to "rename" vfs: remove unused i_op->rename fs: make remaining filesystems use .rename2 libfs: support RENAME_NOREPLACE in simple_rename() fs: support RENAME_NOREPLACE for local filesystems ncpfs: fix unused variable warning
2016-09-28fs: Replace current_fs_time() with current_time()Deepa Dinamani1-1/+1
current_fs_time() uses struct super_block* as an argument. As per Linus's suggestion, this is changed to take struct inode* as a parameter instead. This is because the function is primarily meant for vfs inode timestamps. Also the function was renamed as per Arnd's suggestion. Change all calls to current_fs_time() to use the new current_time() function instead. current_fs_time() will be deleted. Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-09-22f2fs: fix to return error number of read_all_xattrs correctlyChao Yu1-15/+22
We treat all error in read_all_xattrs as a no memory error, which covers the real reason of failure in it. Fix it by return correct errno in order to reflect the real cause. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-09-08f2fs: fix lost xattrs of directoriesJaegeuk Kim1-0/+2
This patch enhances the xattr consistency of dirs from suddern power-cuts. Possible scenario would be: 1. dir->setxattr used by per-file encryption 2. file->setxattr goes into inline_xattr 3. file->fsync In that case, we should do checkpoint for #1. Otherwise we'd lose dir's key information for the file given #2. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-07-08f2fs: avoid mark_inode_dirtyJaegeuk Kim1-2/+2
Let's check inode's dirtiness before calling mark_inode_dirty. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-07-08f2fs: remove unnecessary goto statementTiezhu Yang1-2/+2
When base_addr is NULL, there is no need to call kzfree, it should return -ENOMEM directly. Additionally, it is better to initialize variable 'error' with 0. Signed-off-by: Tiezhu Yang <kernelpatch@126.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-03f2fs: remove syncing inode page in all the casesJaegeuk Kim1-5/+1
This patch reduces to call them across the whole tree. - sync_inode_page() - update_inode_page() - update_inode() - f2fs_write_inode() Instead, checkpoint will flush all the dirty inode metadata before syncing node pages. Note that, this is doable, since we call mark_inode_dirty_sync() for all inode's field change which needs to update on-disk inode as well. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-03f2fs: call mark_inode_dirty_sync for i_field changesJaegeuk Kim1-1/+2
This patch calls mark_inode_dirty_sync() for the following on-disk inode changes. -> largest -> ctime/mtime/atime -> i_current_depth -> i_xattr_nid -> i_pino -> i_advise -> i_flags -> i_mode Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-03f2fs: use inode pointer for {set, clear}_inode_flagJaegeuk Kim1-4/+3
This patch refactors to use inode pointer for set_inode_flag and clear_inode_flag. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-27switch xattr_handler->set() to passing dentry and inode separatelyAl Viro1-6/+6
preparation for similar switch in ->setxattr() (see the next commit for rationale). Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-22Merge tag 'for-f2fs-4.7' of ↵Linus Torvalds1-2/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "In this round, as Ted pointed out, fscrypto allows one more key prefix given by filesystem to resolve backward compatibility issues. Other than that, we've fixed several error handling cases by introducing a fault injection facility. We've also achieved performance improvement in some workloads as well as a bunch of bug fixes. Summary: Enhancements: - fs-specific prefix for fscrypto - fault injection facility - expose validity bitmaps for user to be aware of fragmentation - fallocate/rm/preallocation speed up - use percpu counters Bug fixes: - some inline_dentry/inline_data bugs - error handling for atomic/volatile/orphan inodes - recover broken superblock" * tag 'for-f2fs-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (73 commits) f2fs: fix to update dirty page count correctly f2fs: flush pending bios right away when error occurs f2fs: avoid ENOSPC fault in the recovery process f2fs: make exit_f2fs_fs more clear f2fs: use percpu_counter for total_valid_inode_count f2fs: use percpu_counter for alloc_valid_block_count f2fs: use percpu_counter for # of dirty pages in inode f2fs: use percpu_counter for page counters f2fs: use bio count instead of F2FS_WRITEBACK page count f2fs: manipulate dirty file inodes when DATA_FLUSH is set f2fs: add fault injection to sysfs f2fs: no need inc dirty pages under inode lock f2fs: fix incorrect error path handling in f2fs_move_rehashed_dirents f2fs: fix i_current_depth during inline dentry conversion f2fs: correct return value type of f2fs_fill_super f2fs: fix deadlock when flush inline data f2fs: avoid f2fs_bug_on during recovery f2fs: show # of orphan inodes f2fs: support in batch fzero in dnode page f2fs: support in batch multi blocks preallocation ...
2016-05-07f2fs: remove unneeded memset when updating xattrChao Yu1-1/+0
Each of fields in struct f2fs_xattr_entry will be assigned later, so previously we don't need to memset the struct. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-15f2fs: give -E2BIG for no space in xattrJaegeuk Kim1-1/+1
This patch returns -E2BIG if there is no space to add an xattr entry. This should fix generic/026 in xfstests as well. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-11xattr_handler: pass dentry and inode as separate arguments of ->get()Al Viro1-8/+6
... and do not assume they are already attached to each other Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-02-23f2fs: use wait_for_stable_page to avoid contentionJaegeuk Kim1-3/+3
In write_begin, if storage supports stable_page, we don't need to wait for writeback to update its contents. This patch introduces to use wait_for_stable_page instead of wait_on_page_writeback. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-01-14Merge tag 'for-f2fs-4.5' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs Pull f2fs updates from Jaegeuk Kim: "This series adds two ioctls to control cached data and fragmented files. Most of the rest fixes missing error cases and bugs that we have not covered so far. Summary: Enhancements: - support an ioctl to execute online file defragmentation - support an ioctl to flush cached data - speed up shrinking of extent_cache entries - handle broken superblock - refector dirty inode management infra - revisit f2fs_map_blocks to handle more cases - reduce global lock coverage - add detecting user's idle time Major bug fixes: - fix data race condition on cached nat entries - fix error cases of volatile and atomic writes" * tag 'for-f2fs-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (87 commits) f2fs: should unset atomic flag after successful commit f2fs: fix wrong memory condition check f2fs: monitor the number of background checkpoint f2fs: detect idle time depending on user behavior f2fs: introduce time and interval facility f2fs: skip releasing nodes in chindless extent tree f2fs: use atomic type for node count in extent tree f2fs: recognize encrypted data in f2fs_fiemap f2fs: clean up f2fs_balance_fs f2fs: remove redundant calls f2fs: avoid unnecessary f2fs_balance_fs calls f2fs: check the page status filled from disk f2fs: introduce __get_node_page to reuse common code f2fs: check node id earily when readaheading node page f2fs: read isize while holding i_mutex in fiemap Revert "f2fs: check the node block address of newly allocated nid" f2fs: cover more area with nat_tree_lock f2fs: introduce max_file_blocks in sbi f2fs crypto: check CONFIG_F2FS_FS_XATTR for encrypted symlink f2fs: introduce zombie list for fast shrinking extent trees ...
2016-01-12f2fs: detect idle time depending on user behaviorJaegeuk Kim1-0/+1
This patch adds last time that user requested filesystem operations. This information is used to detect whether system is idle or not later. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-01-08f2fs: clean up f2fs_balance_fsJaegeuk Kim1-1/+1
This patch adds one parameter to clean up all the callers of f2fs_balance_fs. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-12-14xattr handlers: Simplify list operationAndreas Gruenbacher1-56/+26
Change the list operation to only return whether or not an attribute should be listed. Copying the attribute names into the buffer is moved to the callers. Since the result only depends on the dentry and not on the attribute name, we do not pass the attribute name to list operations. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-12-07vfs: Distinguish between full xattr names and proper prefixesAndreas Gruenbacher1-14/+6
Add an additional "name" field to struct xattr_handler. When the name is set, the handler matches attributes with exactly that name. When the prefix is set instead, the handler matches attributes with the given prefix and with a non-empty suffix. This patch should avoid bugs like the one fixed in commit c361016a in the future. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: James Morris <james.l.morris@oracle.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-11-14f2fs: xattr simplificationsAndreas Gruenbacher1-12/+3
Now that the xattr handler is passed to the xattr handler operations, we have access to the attribute name prefix, so simplify f2fs_xattr_generic_list. Also, f2fs_xattr_advise_list is only ever called for f2fs_xattr_advise_handler; there is no need to double check for that. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Cc: Jaegeuk Kim <jaegeuk@kernel.org> Cc: Changman Lee <cm224.lee@samsung.com> Cc: Chao Yu <chao2.yu@samsung.com> Cc: linux-f2fs-devel@lists.sourceforge.net Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-11-14xattr handlers: Pass handler to operations instead of flagsAndreas Gruenbacher1-20/+27
The xattr_handler operations are currently all passed a file system specific flags value which the operations can use to disambiguate between different handlers; some file systems use that to distinguish the xattr namespace, for example. In some oprations, it would be useful to also have access to the handler prefix. To allow that, pass a pointer to the handler to operations instead of the flags value alone. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-08-05f2fs: correct return value of ->setxattrChao Yu1-1/+4
This patch fixes to return correct error number of ->setxattr, which is reported by xfstest tests/generic/026 as below: generic/026 - output mismatch --- tests/generic/026.out +++ results/generic/026.out.bad @@ -4,6 +4,6 @@ 1 below acl max acl max 1 above acl max -chacl: cannot set access acl on "largeaclfile": Argument list too long +chacl: cannot set access acl on "largeaclfile": Numerical result out of range use 16 aces use 17 aces ... Ran: generic/026 Failures: generic/026 Failed 1 of 1 tests Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-29f2fs crypto: add encryption policy and password salt supportJaegeuk Kim1-0/+3
This patch adds encryption policy and password salt support through ioctl implementation. It adds three ioctls: F2FS_IOC_SET_ENCRYPTION_POLICY, F2FS_IOC_GET_ENCRYPTION_POLICY, F2FS_IOC_GET_ENCRYPTION_PWSALT, which use xattr operations. Note that, these definition and codes are taken from ext4 crypto support. For f2fs, xattr operations and on-disk flags for superblock and inode were changed. Signed-off-by: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Ildar Muslukhov <muslukhovi@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-27Merge branch 'for-linus' of ↵Linus Torvalds1-5/+5
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull fourth vfs update from Al Viro: "d_inode() annotations from David Howells (sat in for-next since before the beginning of merge window) + four assorted fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: RCU pathwalk breakage when running into a symlink overmounting something fix I_DIO_WAKEUP definition direct-io: only inc/dec inode->i_dio_count for file systems fs/9p: fix readdir() VFS: assorted d_backing_inode() annotations VFS: fs/inode.c helpers: d_inode() annotations VFS: fs/cachefiles: d_backing_inode() annotations VFS: fs library helpers: d_inode() annotations VFS: assorted weird filesystems: d_inode() annotations VFS: normal filesystems (and lustre): d_inode() annotations VFS: security/: d_inode() annotations VFS: security/: d_backing_inode() annotations VFS: net/: d_inode() annotations VFS: net/unix: d_backing_inode() annotations VFS: kernel/: d_inode() annotations VFS: audit: d_backing_inode() annotations VFS: Fix up some ->d_inode accesses in the chelsio driver VFS: Cachefiles should perform fs modifications on the top layer only VFS: AF_UNIX sockets should call mknod on the top layer only
2015-04-15VFS: normal filesystems (and lustre): d_inode() annotationsDavid Howells1-5/+5
that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2015-04-11f2fs: persist system.advise into on-disk inodeChao Yu1-0/+1
This patch fixes to dirty inode for persisting i_advise of f2fs inode info into on-disk inode if user sets system.advise through setxattr. Otherwise the new value will be lost. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-11f2fs: avoid NULL pointer dereference in f2fs_xattr_advise_getChao Yu1-1/+2
We will encounter oops by executing below command. getfattr -n system.advise /mnt/f2fs/file Killed message log: BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<f8b54d69>] f2fs_xattr_advise_get+0x29/0x40 [f2fs] *pdpt = 00000000319b7001 *pde = 0000000000000000 Oops: 0002 [#1] SMP Modules linked in: f2fs(O) snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq joydev snd_seq_device snd_timer bnep snd rfcomm microcode bluetooth soundcore i2c_piix4 mac_hid serio_raw parport_pc ppdev lp parport binfmt_misc hid_generic psmouse usbhid hid e1000 [last unloaded: f2fs] CPU: 3 PID: 3134 Comm: getfattr Tainted: G O 4.0.0-rc1 #6 Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006 task: f3a71b60 ti: f19a6000 task.ti: f19a6000 EIP: 0060:[<f8b54d69>] EFLAGS: 00010246 CPU: 3 EIP is at f2fs_xattr_advise_get+0x29/0x40 [f2fs] EAX: 00000000 EBX: f19a7e71 ECX: 00000000 EDX: f8b5b467 ESI: 00000000 EDI: f2008570 EBP: f19a7e14 ESP: f19a7e08 DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068 CR0: 80050033 CR2: 00000000 CR3: 319b8000 CR4: 000007f0 Stack: f8b5a634 c0cbb580 00000000 f19a7e34 c1193850 00000000 00000007 f19a7e71 f19a7e64 c0cbb580 c1193810 f19a7e50 c1193c00 00000000 00000000 00000000 c0cbb580 00000000 f19a7f70 c1194097 00000000 00000000 00000000 74737973 Call Trace: [<c1193850>] generic_getxattr+0x40/0x50 [<c1193810>] ? xattr_resolve_name+0x80/0x80 [<c1193c00>] vfs_getxattr+0x70/0xa0 [<c1194097>] getxattr+0x87/0x190 [<c11801d7>] ? path_lookupat+0x57/0x5f0 [<c11819d2>] ? putname+0x32/0x50 [<c116653a>] ? kmem_cache_alloc+0x2a/0x130 [<c11819d2>] ? putname+0x32/0x50 [<c11819d2>] ? putname+0x32/0x50 [<c11819d2>] ? putname+0x32/0x50 [<c11827f9>] ? user_path_at_empty+0x49/0x70 [<c118283f>] ? user_path_at+0x1f/0x30 [<c11941e7>] path_getxattr+0x47/0x80 [<c11948e7>] SyS_getxattr+0x27/0x30 [<c163f748>] sysenter_do_call+0x12/0x12 Code: 66 90 55 89 e5 57 56 53 66 66 66 66 90 8b 78 20 89 d3 ba 67 b4 b5 f8 89 d8 89 ce e8 42 7c 7b c8 85 c0 75 16 0f b6 87 44 01 00 00 <88> 06 b8 01 00 00 00 5b 5e 5f 5d c3 8d 76 00 b8 ea ff ff ff eb EIP: [<f8b54d69>] f2fs_xattr_advise_get+0x29/0x40 [f2fs] SS:ESP 0068:f19a7e08 CR2: 0000000000000000 ---[ end trace 860260654f1f416a ]--- The reason is that in getfattr there are two steps which is indicated by strace info: 1) try to lookup and get size of specified xattr. 2) get value of the extented attribute. strace info: getxattr("/mnt/f2fs/file", "system.advise", 0x0, 0) = 1 getxattr("/mnt/f2fs/file", "system.advise", "\x00", 256) = 1 For the first step, getfattr may pass a NULL pointer in @value and zero in @size as parameters for ->getxattr, but we access this @value pointer directly without checking whether the pointer is valid or not in f2fs_xattr_advise_get, so the oops occurs. This patch fixes this issue by verifying @value pointer before using. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-11-04f2fs: avoid deadlock on init_inode_metadataJaegeuk Kim1-3/+3
Previously, init_inode_metadata does not hold any parent directory's inode page. So, f2fs_init_acl can grab its parent inode page without any problem. But, when we use inline_dentry, that page is grabbed during f2fs_add_link, so that we can fall into deadlock condition like below. INFO: task mknod:11006 blocked for more than 120 seconds. Tainted: G OE 3.17.0-rc1+ #13 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. mknod D ffff88003fc94580 0 11006 11004 0x00000000 ffff880007717b10 0000000000000002 ffff88003c323220 ffff880007717fd8 0000000000014580 0000000000014580 ffff88003daecb30 ffff88003c323220 ffff88003fc94e80 ffff88003ffbb4e8 ffff880007717ba0 0000000000000002 Call Trace: [<ffffffff8173dc40>] ? bit_wait+0x50/0x50 [<ffffffff8173d4cd>] io_schedule+0x9d/0x130 [<ffffffff8173dc6c>] bit_wait_io+0x2c/0x50 [<ffffffff8173da3b>] __wait_on_bit_lock+0x4b/0xb0 [<ffffffff811640a7>] __lock_page+0x67/0x70 [<ffffffff810acf50>] ? autoremove_wake_function+0x40/0x40 [<ffffffff811652cc>] pagecache_get_page+0x14c/0x1e0 [<ffffffffa029afa9>] get_node_page+0x59/0x130 [f2fs] [<ffffffffa02a63ad>] read_all_xattrs+0x24d/0x430 [f2fs] [<ffffffffa02a6ca2>] f2fs_getxattr+0x52/0xe0 [f2fs] [<ffffffffa02a7481>] f2fs_get_acl+0x41/0x2d0 [f2fs] [<ffffffff8122d847>] get_acl+0x47/0x70 [<ffffffff8122db5a>] posix_acl_create+0x5a/0x150 [<ffffffffa02a7759>] f2fs_init_acl+0x29/0xcb [f2fs] [<ffffffffa0286a8d>] init_inode_metadata+0x5d/0x340 [f2fs] [<ffffffffa029253a>] f2fs_add_inline_entry+0x12a/0x2e0 [f2fs] [<ffffffffa0286ea5>] __f2fs_add_link+0x45/0x4a0 [f2fs] [<ffffffffa028b5b6>] ? f2fs_new_inode+0x146/0x220 [f2fs] [<ffffffffa028b816>] f2fs_mknod+0x86/0xf0 [f2fs] [<ffffffff811e3ec1>] vfs_mknod+0xe1/0x160 [<ffffffff811e4b26>] SyS_mknod+0x1f6/0x200 [<ffffffff81741d7f>] tracesys+0xe1/0xe6 Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-09-10f2fs: need fsck.f2fs when f2fs_bug_on is triggeredJaegeuk Kim1-1/+1
If any f2fs_bug_on is triggered, fsck.f2fs is needed. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-09-04f2fs: introduce F2FS_I_SB, F2FS_M_SB, and F2FS_P_SBJaegeuk Kim1-3/+3
This patch adds three inline functions to clean up dirty casting codes. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-08-19f2fs: fix typoarter971-1/+1
Fix typo and some grammatical errors. The words "filesystem" and "readahead" are being used without the space treewide. Signed-off-by: Park Ju Hyung <qkrwngud825@gmail.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-06-02f2fs: fix recursive lock by f2fs_setxattrJaegeuk Kim1-5/+5
This patch should resolve the following recursive lock. [<ffffffff8135a9c3>] call_rwsem_down_write_failed+0x13/0x20 [<ffffffffa01749dc>] f2fs_setxattr+0x5c/0xa0 [f2fs] [<ffffffffa0174c99>] __f2fs_set_acl+0x1b9/0x340 [f2fs] [<ffffffffa017515a>] f2fs_init_acl+0x4a/0xcb [f2fs] [<ffffffffa0159abe>] __f2fs_add_link+0x26e/0x780 [f2fs] [<ffffffffa015d4d8>] f2fs_mkdir+0xb8/0x150 [f2fs] [<ffffffff811cebd7>] vfs_mkdir+0xb7/0x160 [<ffffffff811cf89b>] SyS_mkdir+0xab/0xe0 [<ffffffff817244bf>] tracesys+0xe1/0xe6 [<ffffffffffffffff>] 0xffffffffffffffff The call path indicates: - f2fs_add_link : down_write(&fi->i_sem); - init_inode_metadata - f2fs_init_acl - __f2fs_set_acl - f2fs_setxattr : down_write(&fi->i_sem); Here we should not call f2fs_setxattr, but __f2fs_setxattr. But __f2fs_setxattr is a static function in xattr.c, so that I found the other generic approach to use f2fs_setxattr. In f2fs_setxattr, the page pointer is only given from init_inode_metadata. So, this patch adds this condition to avoid this in f2fs_setxattr. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2014-05-07f2fs: split grab_cache_page and wait_on_page_writeback for node pagesJaegeuk Kim1-0/+3
This patch splits grab_cache_page_write_begin into grab_cache_page and wait_on_page_writeback for node pages. This patch intends to enhance the latency to get node pages by alleviating unnecessary wait_on_page_writeback. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-05-07f2fs: return errors right after checking themJaegeuk Kim1-1/+9
This patch adds two error conditions early in the setxattr operations. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-05-07f2fs: pass flags field to setxattr functionsJaegeuk Kim1-6/+7
This patch passes the "flags" field to the low level setxattr functions to use XATTR_REPLACE in the following patches. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-05-07f2fs: clean up long variable namesJaegeuk Kim1-42/+44
This patch includes simple clean-ups to reduce unnecessary long variable names. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-04-01f2fs: avoid unneeded lookup when xattr name length is too longChao Yu1-0/+2
In f2fs_setxattr we have limit this attribute name length, so we should also check it in f2fs_getxattr to avoid useless lookup caused by invalid name length. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-03-20f2fs: avoid RECLAIM_FS-ON-W warningJaegeuk Kim1-1/+1
This patch should resolve the following possible bug. RECLAIM_FS-ON-W at: mark_held_locks+0xb9/0x140 lockdep_trace_alloc+0x85/0xf0 __kmalloc+0x53/0x1d0 read_all_xattrs+0x3d1/0x3f0 [f2fs] f2fs_getxattr+0x4f/0x100 [f2fs] f2fs_get_acl+0x4c/0x290 [f2fs] get_acl+0x4f/0x80 posix_acl_create+0x72/0x180 f2fs_init_acl+0x29/0xcc [f2fs] __f2fs_add_link+0x259/0x710 [f2fs] f2fs_create+0xad/0x1c0 [f2fs] vfs_create+0xed/0x150 do_last+0xd36/0xed0 path_openat+0xc5/0x680 do_filp_open+0x43/0xa0 do_sys_open+0x13c/0x230 SyS_creat+0x1e/0x20 system_call_fastpath+0x16/0x1b Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-03-20f2fs: introduce fi->i_sem to protect fi's infoJaegeuk Kim1-0/+3
This patch introduces fi->i_sem to protect fi's info that includes xattr_ver, pino, i_nlink. This enables to remove i_mutex during f2fs_sync_file, resulting in performance improvement when a number of fsync calls are triggered from many concurrent threads. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2014-01-28Merge branch 'for-linus' of ↵Linus Torvalds1-4/+5
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull vfs updates from Al Viro: "Assorted stuff; the biggest pile here is Christoph's ACL series. Plus assorted cleanups and fixes all over the place... There will be another pile later this week" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (43 commits) __dentry_path() fixes vfs: Remove second variable named error in __dentry_path vfs: Is mounted should be testing mnt_ns for NULL or error. Fix race when checking i_size on direct i/o read hfsplus: remove can_set_xattr nfsd: use get_acl and ->set_acl fs: remove generic_acl nfs: use generic posix ACL infrastructure for v3 Posix ACLs gfs2: use generic posix ACL infrastructure jfs: use generic posix ACL infrastructure xfs: use generic posix ACL infrastructure reiserfs: use generic posix ACL infrastructure ocfs2: use generic posix ACL infrastructure jffs2: use generic posix ACL infrastructure hfsplus: use generic posix ACL infrastructure f2fs: use generic posix ACL infrastructure ext2/3/4: use generic posix ACL infrastructure btrfs: use generic posix ACL infrastructure fs: make posix_acl_create more useful fs: make posix_acl_chmod more useful ...
2014-01-26f2fs: use generic posix ACL infrastructureChristoph Hellwig1-4/+5
f2fs has some weird mode bit handling, so still using the old chmod code for now. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jaegeuk Kim <jaegeuk.kim@samsung.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-12-23f2fs: add unlikely() macro for compiler more aggressivelyJaegeuk Kim1-1/+1
This patch adds unlikely() macro into the most of codes. The basic rule is to add that when: - checking unusual errors, - checking page mappings, - and the other unlikely conditions. Change log from v1: - Don't add unlikely for the NULL test and error test: advised by Andi Kleen. Cc: Chao Yu <chao2.yu@samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-10-29f2fs: fix calculating incorrect free size when update xattr in __f2fs_setxattrChao Yu1-1/+1
During xattr updating, free size should be corrected to remainder free size + old entry size. It can avoid ENOSPC error when we update old entry with the same size new entry at fully filled xattr. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-10-29f2fs: add an option to avoid unnecessary BUG_ONsJaegeuk Kim1-1/+1
If you want to remove unnecessary BUG_ONs, you can just turn off F2FS_CHECK_FS in your kernel config. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-10-07f2fs: use rw_sem instead of fs_lock(locks mutex)Gu Zheng1-5/+2
The fs_locks is used to block other ops(ex, recovery) when doing checkpoint. And each other operate routine(besides checkpoint) needs to acquire a fs_lock, there is a terrible problem here, if these are too many concurrency threads acquiring fs_lock, so that they will block each other and may lead to some performance problem, but this is not the phenomenon we want to see. Though there are some optimization patches introduced to enhance the usage of fs_lock, but the thorough solution is using a *rw_sem* to replace the fs_lock. Checkpoint routine takes write_sem, and other ops take read_sem, so that we can block other ops(ex, recovery) when doing checkpoint, and other ops will not disturb each other, this can avoid the problem described above completely. Because of the weakness of rw_sem, the above change may introduce a potential problem that the checkpoint thread might get starved if other threads are intensively locking the read semaphore for I/O.(Pointed out by Xu Jin) In order to avoid this, a wait_list is introduced, the appending read semaphore ops will be dropped into the wait_list if checkpoint thread is waiting for write semaphore, and will be waked up when checkpoint thread gives up write semaphore. Thanks to Kim's previous review and test, and will be very glad to see other guys' performance tests about this patch. V2: -fix the potential starvation problem. -use more suitable func name suggested by Xu Jin. Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com> [Jaegeuk Kim: adjust minor coding standard] Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-09-25f2fs: don't GC or take an fs_lock from f2fs_initxattrs()Russ Knize1-10/+25
f2fs_initxattrs() is called internally from within F2FS and should not call functions that are used by VFS handlers. This avoids certain deadlocks: - vfs_create() - f2fs_create() <-- takes an fs_lock - f2fs_add_link() - __f2fs_add_link() - init_inode_metadata() - f2fs_init_security() - security_inode_init_security() - f2fs_initxattrs() - f2fs_setxattr() <-- also takes an fs_lock If the caller happens to grab the same fs_lock from the pool in both places, they will deadlock. There are also deadlocks involving multiple threads and mutexes: - f2fs_write_begin() - f2fs_balance_fs() <-- takes gc_mutex - f2fs_gc() - write_checkpoint() - block_operations() - mutex_lock_all() <-- blocks trying to grab all fs_locks - f2fs_mkdir() <-- takes an fs_lock - __f2fs_add_link() - f2fs_init_security() - security_inode_init_security() - f2fs_initxattrs() - f2fs_setxattr() - f2fs_balance_fs() <-- blocks trying to take gc_mutex Signed-off-by: Russ Knize <Russ.Knize@motorola.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-08-26f2fs: support the inline xattrsJaegeuk Kim1-83/+166
0. modified inode structure -------------------------------------- metadata (e.g., i_mtime, i_ctime, etc) -------------------------------------- direct pointers [0 ~ 873] inline xattrs (200 bytes by default) indirect pointers [0 ~ 4] -------------------------------------- node footer -------------------------------------- 1. setxattr flow - read_all_xattrs copies all the xattrs from inline and xattr node block. - handle xattr entries - write_all_xattrs copies modified xattrs into inline and xattr node block. 2. getxattr flow - read_all_xattrs copies all the xattrs from inline and xattr node block. - check target entries 3. Usage # mount -t f2fs -o inline_xattr $DEV $MNT Once mounted with the inline_xattr option, f2fs marks all the newly created files to reserve an amount of inline xattr space explicitly inside the inode block. Without the mount option, f2fs will not touch any existing files and newly created files as well. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-08-26f2fs: introduce __find_xattr for readabilityJaegeuk Kim1-25/+21
The __find_xattr is to search the wanted xattr entry starting from the base_addr. If not found, the returned entry is the last empty xattr entry that can be allocated newly. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
2013-08-12f2fs: should cover i_xattr_nid with its xattr node page lockJaegeuk Kim1-5/+5
Previously, f2fs_setxattr assigns i_xattr_nid in the inode page inconsistently. The scenario is: = Thread 1 = = Thread 2 = = fi->i_xattr_nid = = on-disk nid = f2fs_setxattr 0 0 new_node_page X 0 sync_inode_page X X checkpoint X X -. grab_cache_page X X | --> allocate a new xattr node block or -ENOSPC <----------------' At this moment, the checkpoint stores inconsistent data where the inode has i_xattr_nid but actual xattr node block is not allocated yet. So, we should assign the real i_xattr_nid only after its xattr node block is allocated. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
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