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charset="us-ascii"; Format="flowed" Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On 2024/3/22 14:03, Zhiguo Niu wrote: > A length that exceeds the real size of the inode may be > specified from user, although these out-of-range areas > are not mapped, but they still need to be check in > while loop, which is unnecessary. > > Signed-off-by: Zhiguo Niu > --- > fs/f2fs/file.c | 4 +++- > 1 file changed, 3 insertions(+), 1 deletion(-) > > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c > index 128e53d..0e7eac6 100644 > --- a/fs/f2fs/file.c > +++ b/fs/f2fs/file.c > @@ -2609,7 +2609,9 @@ static int f2fs_defragment_range(struct f2fs_sb_info *sbi, > int err; > > pg_start = range->start >> PAGE_SHIFT; > - pg_end = (range->start + range->len) >> PAGE_SHIFT; > + pg_end = min_t(pgoff_t, > + (range->start + range->len) >> PAGE_SHIFT, > + DIV_ROUND_UP(i_size_read(inode), PAGE_SIZE)); I guess we may check i_size w/ inode lock, it can avoid racing w/ append write or truncate. Thanks, > > f2fs_balance_fs(sbi, true); > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel