On Sun, Sep 13, 2009 at 5:44 PM, SandeepKsinha <sandeepksinha@xxxxxxxxx> wrote: > Hi all, > > Looking at the flags in the extent info, Is there any specifc flags > which indicates an extent to be a HOLE?? I am not sure if I understand the question correctly ...... why would you need that ? Can you give an example where it should be used ?? > > I could only find the following ones... > > 39#define FIEMAP_MAX_OFFSET (~0ULL) > 40 > 41#define FIEMAP_FLAG_SYNC 0x00000001 /* sync file data before map */ > 42#define FIEMAP_FLAG_XATTR 0x00000002 /* map extended attribute tree */ > 43 > 44#define FIEMAP_FLAGS_COMPAT (FIEMAP_FLAG_SYNC | FIEMAP_FLAG_XATTR) > 45 > 46#define FIEMAP_EXTENT_LAST 0x00000001 /* Last extent > in file. */ > 47#define FIEMAP_EXTENT_UNKNOWN 0x00000002 /* Data > location unknown. */ > 48#define FIEMAP_EXTENT_DELALLOC 0x00000004 /* Location > still pending. > 49 * Sets > EXTENT_UNKNOWN. */ > 50#define FIEMAP_EXTENT_ENCODED 0x00000008 /* Data can not be read > 51 * while fs is > unmounted */ > 52#define FIEMAP_EXTENT_DATA_ENCRYPTED 0x00000080 /* Data is > encrypted by fs. > 53 * Sets > EXTENT_NO_BYPASS. */ > 54#define FIEMAP_EXTENT_NOT_ALIGNED 0x00000100 /* Extent > offsets may not be > 55 * block aligned. */ > 56#define FIEMAP_EXTENT_DATA_INLINE 0x00000200 /* Data mixed > with metadata. > 57 * Sets > EXTENT_NOT_ALIGNED.*/ > 58#define FIEMAP_EXTENT_DATA_TAIL 0x00000400 /* Multiple > files in block. > 59 * Sets > EXTENT_NOT_ALIGNED.*/ > 60#define FIEMAP_EXTENT_UNWRITTEN 0x00000800 /* Space allocated, but > 61 * no data > (i.e. zero). */ > 62#define FIEMAP_EXTENT_MERGED 0x00001000 /* File does not natively > 63 * support > extents. Result > 64 * merged for > efficiency. */ > > > -- > Regards, > Sandeep. > > > > > > > “To learn is to change. Education is a process that changes the learner.” > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx > Please read the FAQ at http://kernelnewbies.org/FAQ > > -- Thanks - Manish -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
