diff options
| -rw-r--r-- | fs/open.c | 7 | ||||
| -rw-r--r-- | include/linux/falloc.h | 1 |
2 files changed, 7 insertions, 1 deletions
diff --git a/fs/open.c b/fs/open.c index 4197b9ed023..5b6ef7e2859 100644 --- a/fs/open.c +++ b/fs/open.c @@ -223,7 +223,12 @@ int do_fallocate(struct file *file, int mode, loff_t offset, loff_t len) return -EINVAL; /* Return error if mode is not supported */ - if (mode && !(mode & FALLOC_FL_KEEP_SIZE)) + if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE)) + return -EOPNOTSUPP; + + /* Punch hole must have keep size set */ + if ((mode & FALLOC_FL_PUNCH_HOLE) && + !(mode & FALLOC_FL_KEEP_SIZE)) return -EOPNOTSUPP; if (!(file->f_mode & FMODE_WRITE)) diff --git a/include/linux/falloc.h b/include/linux/falloc.h index 3c155107d61..73e0b628e05 100644 --- a/include/linux/falloc.h +++ b/include/linux/falloc.h @@ -2,6 +2,7 @@ #define _FALLOC_H_ #define FALLOC_FL_KEEP_SIZE 0x01 /* default is extend size */ +#define FALLOC_FL_PUNCH_HOLE 0x02 /* de-allocates range */ #ifdef __KERNEL__ |