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Mainline Linux tree for various devices, only for fun :)
02117b8ae9
Quota code itself is serializing the operations by taking mutex_lock. It seems a below deadlock can happen if GF_NOFS is not used in f2fs_quota_read __switch_to+0x88 __schedule+0x5b0 schedule+0x78 schedule_preempt_disabled+0x20 __mutex_lock_slowpath+0xdc //mutex owner is itself mutex_lock+0x2c dquot_commit+0x30 //mutex_lock(&dqopt->dqio_mutex); dqput+0xe0 __dquot_drop+0x80 dquot_drop+0x48 f2fs_evict_inode+0x218 evict+0xa8 dispose_list+0x3c prune_icache_sb+0x58 super_cache_scan+0xf4 do_shrink_slab+0x208 shrink_slab.part.40+0xac shrink_zone+0x1b0 do_try_to_free_pages+0x25c try_to_free_pages+0x164 __alloc_pages_nodemask+0x534 do_read_cache_page+0x6c read_cache_page+0x14 f2fs_quota_read+0xa4 read_blk+0x54 find_tree_dqentry+0xe4 find_tree_dqentry+0xb8 find_tree_dqentry+0xb8 find_tree_dqentry+0xb8 qtree_read_dquot+0x68 v2_read_dquot+0x24 dquot_acquire+0x5c // mutex_lock(&dqopt->dqio_mutex); dqget+0x238 __dquot_initialize+0xd4 dquot_initialize+0x10 dquot_file_open+0x34 f2fs_file_open+0x6c do_dentry_open+0x1e4 vfs_open+0x6c path_openat+0xa20 do_filp_open+0x4c do_sys_open+0x178 Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| firmware | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.