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2019-11-11race in exportfs_decode_fh()Al Viro
On Sat, Nov 02, 2019 at 06:08:42PM +0000, Al Viro wrote: > It is converging to a reasonably small and understandable surface, actually, > most of that being in core pathname resolution. Two big piles of nightmares > left to review - overlayfs and (somewhat surprisingly) setxattr call chains, > the latter due to IMA/EVM/LSM insanity... Oh, lovely - in exportfs_decode_fh() we have this: err = exportfs_get_name(mnt, target_dir, nbuf, result); if (!err) { inode_lock(target_dir->d_inode); nresult = lookup_one_len(nbuf, target_dir, strlen(nbuf)); inode_unlock(target_dir->d_inode); if (!IS_ERR(nresult)) { if (nresult->d_inode) { dput(result); result = nresult; } else dput(nresult); } } We have derived the parent from fhandle, we have a disconnected dentry for child, we go look for the name. We even find it. Now, we want to look it up. And some bastard goes and unlinks it, just as we are trying to lock the parent. We do a lookup, and get a negative dentry. Then we unlock the parent... and some other bastard does e.g. mkdir with the same name. OK, nresult->d_inode is not NULL (anymore). It has fuck-all to do with the original fhandle (different inumber, etc.) but we happily accept it. Even better, we have no barriers between our check and nresult becoming positive. IOW, having observed non-NULL ->d_inode doesn't give us enough - e.g. we might still see the old ->d_flags value, from back when ->d_inode used to be NULL. On something like alpha we also have no promises that we'll observe anything about the fields of nresult->d_inode, but ->d_flags alone is enough for fun. The callers can't e.g. expect d_is_reg() et.al. to match the reality. This is obviously bogus. And the fix is obvious: check that nresult->d_inode is equal to result->d_inode before unlocking the parent. Note that we'd *already* had the original result and all of its aliases rejected by the 'acceptable' predicate, so if nresult doesn't supply us a better alias, we are SOL. Does anyone see objections to the following patch? Christoph, that seems to be your code; am I missing something subtle here? AFAICS, that goes back to 2007 or so... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2019-11-11fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned longKonstantin Khlebnikov
Quota statistics counted as 64-bit per-cpu counter. Reading sums per-cpu fractions as signed 64-bit int, filters negative values and then reports lower half as signed 32-bit int. Result may looks like: fs.quota.allocated_dquots = 22327 fs.quota.cache_hits = -489852115 fs.quota.drops = -487288718 fs.quota.free_dquots = 22083 fs.quota.lookups = -486883485 fs.quota.reads = 22327 fs.quota.syncs = 335064 fs.quota.writes = 3088689 Values bigger than 2^31-1 reported as negative. All counters except "allocated_dquots" and "free_dquots" are monotonic, thus they should be reported as is without filtering negative values. Kernel doesn't have generic helper for 64-bit sysctl yet, let's use at least unsigned long. Link: https://lore.kernel.org/r/157337934693.2078.9842146413181153727.stgit@buzz Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by: Jan Kara <jack@suse.cz>
2019-11-11Merge tag 'v5.4-rc7' into sched/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-11-10io_uring: convert accept4() -ERESTARTSYS into -EINTRJens Axboe
If we cancel a pending accept operating with a signal, we get -ERESTARTSYS returned. Turn that into -EINTR for userspace, we should not be return -ERESTARTSYS. Fixes: 17f2fe35d080 ("io_uring: add support for IORING_OP_ACCEPT") Reported-by: Hrvoje Zeba <zeba.hrvoje@gmail.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-10io_uring: fix error clear of ->file_table in io_sqe_files_register()Jens Axboe
syzbot reports that when using failslab and friends, we can get a double free in io_sqe_files_unregister(): BUG: KASAN: double-free or invalid-free in io_sqe_files_unregister+0x20b/0x300 fs/io_uring.c:3185 CPU: 1 PID: 8819 Comm: syz-executor452 Not tainted 5.4.0-rc6-next-20191108 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374 kasan_report_invalid_free+0x65/0xa0 mm/kasan/report.c:468 __kasan_slab_free+0x13a/0x150 mm/kasan/common.c:450 kasan_slab_free+0xe/0x10 mm/kasan/common.c:480 __cache_free mm/slab.c:3426 [inline] kfree+0x10a/0x2c0 mm/slab.c:3757 io_sqe_files_unregister+0x20b/0x300 fs/io_uring.c:3185 io_ring_ctx_free fs/io_uring.c:3998 [inline] io_ring_ctx_wait_and_kill+0x348/0x700 fs/io_uring.c:4060 io_uring_release+0x42/0x50 fs/io_uring.c:4068 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x904/0x2e60 kernel/exit.c:817 do_group_exit+0x135/0x360 kernel/exit.c:921 __do_sys_exit_group kernel/exit.c:932 [inline] __se_sys_exit_group kernel/exit.c:930 [inline] __x64_sys_exit_group+0x44/0x50 kernel/exit.c:930 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x43f2c8 Code: 31 b8 c5 f7 ff ff 48 8b 5c 24 28 48 8b 6c 24 30 4c 8b 64 24 38 4c 8b 6c 24 40 4c 8b 74 24 48 4c 8b 7c 24 50 48 83 c4 58 c3 66 <0f> 1f 84 00 00 00 00 00 48 8d 35 59 ca 00 00 0f b6 d2 48 89 fb 48 RSP: 002b:00007ffd5b976008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043f2c8 RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00000000004bf0a8 R08: 00000000000000e7 R09: ffffffffffffffd0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001 R13: 00000000006d1180 R14: 0000000000000000 R15: 0000000000000000 This happens if we fail allocating the file tables. For that case we do free the file table correctly, but we forget to set it to NULL. This means that ring teardown will see it as being non-NULL, and attempt to free it again. Fix this by clearing the file_table pointer if we free the table. Reported-by: syzbot+3254bc44113ae1e331ee@syzkaller.appspotmail.com Fixes: 65e19f54d29c ("io_uring: support for larger fixed file sets") Reviewed-by: Bob Liu <bob.liu@oracle.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-10io_uring: separate the io_free_req and io_free_req_find_next interfaceJackie Liu
Similar to the distinction between io_put_req and io_put_req_find_next, io_free_req has been modified similarly, with no functional changes. Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-10io_uring: keep io_put_req only responsible for release and put reqJackie Liu
We already have io_put_req_find_next to find the next req of the link. we should not use the io_put_req function to find them. They should be functions of the same level. Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-10io_uring: remove passed in 'ctx' function parameter ctx if possibleJackie Liu
Many times, the core of the function is req, and req has already set req->ctx at initialization time, so there is no need to pass in the ctx from the caller. Cleanup, no functional change. Signed-off-by: Jackie Liu <liuyun01@kylinos.cn> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-10io_uring: reduce/pack size of io_ring_ctxJens Axboe
With the recent flurry of additions and changes to io_uring, the layout of io_ring_ctx has become a bit stale. We're right now at 704 bytes in size on my x86-64 build, or 11 cachelines. This patch does two things: - We have to completion structs embedded, that we only use for quiesce of the ctx (or shutdown) and for sqthread init cases. That 2x32 bytes right there, let's dynamically allocate them. - Reorder the struct a bit with an eye on cachelines, use cases, and holes. With this patch, we're down to 512 bytes, or 8 cachelines. Reviewed-by: Jackie Liu <liuyun01@kylinos.cn> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2019-11-10xfs: always pass a valid hdr to xfs_dir3_leaf_check_intChristoph Hellwig
Move the code for extracting the incore header to the only caller that didn't already do that. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: merge xfs_dir2_data_freescan and xfs_dir2_data_freescan_intChristoph Hellwig
There is no real need for xfs_dir2_data_freescan wrapper, so rename xfs_dir2_data_freescan_int to xfs_dir2_data_freescan and let the callers dereference the mount pointer from the inode. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the now unused dir ops infrastructureChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->data_get_ftype and ->data_put_ftypeChristoph Hellwig
Replace the ->data_get_ftype and ->data_put_ftype dir ops methods with directly called xfs_dir2_data_get_ftype and xfs_dir2_data_put_ftype helpers that takes care of the differences between the directory format with and without the file type field. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->data_bestfree_pChristoph Hellwig
Replace the ->data_bestfree_p dir ops method with a directly called xfs_dir2_data_bestfree_p helper that takes care of the differences between the v4 and v5 on-disk format. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xfs_dir2_data_entsizeChristoph Hellwig
Remove the XFS_DIR2_DATA_ENTSIZE and XFS_DIR3_DATA_ENTSIZE and open code them in their only caller, which now becomes so simple that we can turn it into an inline function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: move the dir2 data block fixed offsets to struct xfs_da_geometryChristoph Hellwig
Move the data block fixed offsets towards our structure for dir/attr geometry parameters. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->data_entry_tag_pChristoph Hellwig
Replace the ->data_entry_tag_p dir ops method with a directly called xfs_dir2_data_entry_tag_p helper that takes care of the differences between the directory format with and without the file type field. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->data_entsizeChristoph Hellwig
Replace the ->data_entsize dir ops method with a directly called xfs_dir2_data_entsize helper that takes care of the differences between the directory format with and without the file type field. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: replace xfs_dir3_data_endp with xfs_dir3_data_end_offsetChristoph Hellwig
All the callers really want an offset into the buffer, so adopt the helper to return that instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the now unused ->data_entry_p methodChristoph Hellwig
Now that all users use the data_entry_offset field this method is unused and can be removed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup __xfs_dir3_data_checkChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xfs_dir2_data_freescan_intChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xfs_dir2_block_to_sfChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xchk_directory_data_bestfreeChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xchk_dir_recChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xfs_dir2_leaf_getdentsChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: cleanup xfs_dir2_block_getdentsChristoph Hellwig
Use an offset as the main means for iteration, and only do pointer arithmetics to find the data/unused entries. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the ->data_unused_p methodChristoph Hellwig
Replace the two users of the ->data_unused_p dir ops method with a direct calculation using ->data_entry_offset, and clean them up a bit. xfs_dir2_sf_to_block already had an offset variable containing the value of ->data_entry_offset, which we are now reusing to make it clear that the initial freespace entry is at the same place that we later fill in the 1 entry, and in xfs_dir3_data_init the function is cleaned up a bit to keep the initialization of fields of a given structure close to each other, and to avoid a local variable. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the ->data_dot_entry_p and ->data_dotdot_entry_p methodsChristoph Hellwig
The only user of the ->data_dot_entry_p and ->data_dotdot_entry_p methods is the xfs_dir2_sf_to_block function that builds block format directorys from a short form directory. It already uses pointer arithmetics with a offset variable to do so for the real entries in the directory, so switch the generation of the . and .. entries to the same scheme, and clean up some of the later pointer arithmetics to use bp->b_addr directly as well and avoid some casts. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the data_dotdot_offset field in struct xfs_dir_opsChristoph Hellwig
The data_dotdot_offset value is always equal to data_entry_offset plus the fixed size of the "." entry. Right now calculating that fixed size requires an indirect call, but by the end of this series it will be an inline function that can be constant folded. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the data_dot_offset field in struct xfs_dir_opsChristoph Hellwig
The data_dot_offset value is always equal to data_entry_offset given that "." is always the first entry in the directory. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: remove the unused ->data_first_entry_p methodChristoph Hellwig
Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->sf_get_ftype and ->sf_put_ftypeChristoph Hellwig
Replace the ->sf_get_ftype and ->sf_put_ftype dir ops methods with directly called xfs_dir2_sf_get_ftype and xfs_dir2_sf_put_ftype helpers that takes care of the differences between the directory format with and without the file type field. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->sf_get_ino and ->sf_put_inoChristoph Hellwig
Replace the ->sf_get_ino and ->sf_put_ino dir ops methods with directly called xfs_dir2_sf_get_ino and xfs_dir2_sf_put_ino helpers that take care of the difference between the directory format with and without the file type field. Also move xfs_dir2_sf_get_parent_ino and xfs_dir2_sf_put_parent_ino to xfs_dir2_sf.c with the rest of the low-level short form entry handling and use XFS_MAXINUMBER istead of opencoded constants. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->sf_entsize and ->sf_nextentryChristoph Hellwig
Just check for file-type enabled directories directly. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->sf_get_parent_ino and ->sf_put_parent_inoChristoph Hellwig
The parent inode handling is the same for all directory format variants, just use direct calls instead of going through a pointless indirect call. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->db_to_fdb and ->db_to_fdindexChristoph Hellwig
Now that the max bests value is in struct xfs_da_geometry both instances of ->db_to_fdb and ->db_to_fdindex are identical. Replace them with local xfs_dir2_db_to_fdb and xfs_dir2_db_to_fdindex functions in xfs_dir2_node.c. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: move the max dir2 free bests count to struct xfs_da_geometryChristoph Hellwig
Move the max free bests count towards our structure for dir/attr geometry parameters. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: move the dir2 free header size to struct xfs_da_geometryChristoph Hellwig
Move the free header size towards our structure for dir/attr geometry parameters. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: add a bests pointer to struct xfs_dir3_icfree_hdrChristoph Hellwig
All but two callers of the ->free_bests_p dir operation already have a struct xfs_dir3_icfree_hdr from a previous call to xfs_dir2_free_hdr_from_disk at hand. Add a pointer to the bests to struct xfs_dir3_icfree_hdr to clean up this pattern. To optimize this pattern, pass the struct xfs_dir3_icfree_hdr to xfs_dir2_free_log_bests instead of recalculating the pointer there. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: make the xfs_dir3_icfree_hdr available to xfs_dir2_node_addname_intChristoph Hellwig
Return the xfs_dir3_icfree_hdr used by the helpers called from xfs_dir2_node_addname_int to the main function to prepare for the next round of changes where we'll use the ichdr in xfs_dir3_icfree_hdr to avoid extra operations to find the bests pointers. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->free_hdr_to_diskChristoph Hellwig
Replace the ->free_hdr_to_disk dir ops method with a directly called xfs_dir2_free_hdr_to_disk helper that takes care of the differences between the v4 and v5 on-disk format. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->free_hdr_from_diskChristoph Hellwig
Replace the ->free_hdr_from_disk dir ops method with a directly called xfs_dir_free_hdr_from_disk helper that takes care of the differences between the v4 and v5 on-disk format. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: move the max dir2 leaf entries count to struct xfs_da_geometryChristoph Hellwig
Move the max leaf entries count towards our structure for dir/attr geometry parameters. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: move the dir2 leaf header size to struct xfs_da_geometryChristoph Hellwig
Move the leaf header size towards our structure for dir/attr geometry parameters. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: add an entries pointer to struct xfs_dir3_icleaf_hdrChristoph Hellwig
All callers of the ->node_tree_p dir operation already have a struct xfs_dir3_icleaf_hdr from a previous call to xfs_da_leaf_hdr_from_disk at hand, or just need slight changes to the calling conventions to do so. Add a pointer to the entries to struct xfs_dir3_icleaf_hdr to clean up this pattern. To make this possible the xfs_dir3_leaf_log_ents function grow a new argument to pass the xfs_dir3_icleaf_hdr that call callers already have, and xfs_dir2_leaf_lookup_int returns the xfs_dir3_icleaf_hdr to the callers so that they can later use it. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->leaf_hdr_to_diskChristoph Hellwig
Replace the ->leaf_hdr_to_disk dir ops method with a directly called xfs_dir_leaf_hdr_to_disk helper that takes care of the differences between the v4 and v5 on-disk format. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: devirtualize ->leaf_hdr_from_diskChristoph Hellwig
Replace the ->leaf_hdr_from_disk dir ops method with a directly called xfs_dir2_leaf_hdr_from_disk helper that takes care of the differences between the v4 and v5 on-disk format. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: move the node header size to struct xfs_da_geometryChristoph Hellwig
Move the node header size field to struct xfs_da_geometry, and remove the now unused non-directory dir ops infrastructure. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2019-11-10xfs: add a btree entries pointer to struct xfs_da3_icnode_hdrChristoph Hellwig
All but two callers of the ->node_tree_p dir operation already have a xfs_da3_icnode_hdr from a previous call to xfs_da3_node_hdr_from_disk at hand. Add a pointer to the btree entries to struct xfs_da3_icnode_hdr to clean up this pattern. The two remaining callers now expand the whole header as well, but that isn't very expensive and not in a super hot path anyway. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
generated by cgit (git 2.34.1) at 2025-09-21 20:16:06 +0000