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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-24 17:42:24 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-10-24 17:42:24 +0100 |
| commit | 5993692f09582accb4cb7af11d344598af43c3b8 (patch) | |
| tree | 062447eb44769d6da6e50302853eac1bb1d6e5d3 /fs/ext4/move_extent.c | |
| parent | d6edff78fe9e34dbea1bec7dc26cfce92c6d96d5 (diff) | |
| parent | 33458eaba4dfe778a426df6a19b7aad2ff9f7eec (diff) | |
| download | linux-5993692f09582accb4cb7af11d344598af43c3b8.tar.gz | |
Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 updates from Ted Ts'o:
- further restructure ext4 documentation
- fix up ext4's delayed allocation for bigalloc file systems
- fix up some syzbot-detected races in EXT4_IOC_MOVE_EXT,
EXT4_IOC_SWAP_BOOT, and ext4_remount
- ... and a few other miscellaneous bugs and optimizations.
* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (21 commits)
ext4: fix use-after-free race in ext4_remount()'s error path
ext4: cache NULL when both default_acl and acl are NULL
docs: promote the ext4 data structures book to top level
docs: move ext4 administrative docs to admin-guide/
jbd2: fix use after free in jbd2_log_do_checkpoint()
ext4: propagate error from dquot_initialize() in EXT4_IOC_FSSETXATTR
ext4: fix setattr project check in fssetxattr ioctl
docs: make ext4 readme tables readable
docs: fix ext4 documentation table formatting problems
docs: generate a separate ext4 pdf file from the documentation
ext4: convert fault handler to use vm_fault_t type
ext4: initialize retries variable in ext4_da_write_inline_data_begin()
ext4: fix EXT4_IOC_SWAP_BOOT
ext4: fix build error when DX_DEBUG is defined
ext4: fix argument checking in EXT4_IOC_MOVE_EXT
ext4: fix reserved cluster accounting at page invalidation time
ext4: adjust reserved cluster count when removing extents
ext4: reduce reserved cluster count by number of allocated clusters
ext4: fix reserved cluster accounting at delayed write time
ext4: add new pending reservation mechanism
...
Diffstat (limited to 'fs/ext4/move_extent.c')
| -rw-r--r-- | fs/ext4/move_extent.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/ext4/move_extent.c b/fs/ext4/move_extent.c index a409ff70d67b..2f5be02fc6f6 100644 --- a/fs/ext4/move_extent.c +++ b/fs/ext4/move_extent.c @@ -516,9 +516,13 @@ mext_check_arguments(struct inode *orig_inode, orig_inode->i_ino, donor_inode->i_ino); return -EINVAL; } - if (orig_eof < orig_start + *len - 1) + if (orig_eof <= orig_start) + *len = 0; + else if (orig_eof < orig_start + *len - 1) *len = orig_eof - orig_start; - if (donor_eof < donor_start + *len - 1) + if (donor_eof <= donor_start) + *len = 0; + else if (donor_eof < donor_start + *len - 1) *len = donor_eof - donor_start; if (!*len) { ext4_debug("ext4 move extent: len should not be 0 " |