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zfs: update comments about zfid_long_t to match the FreeBSD definitions

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MFC after:	1 week
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avg 2013-02-08 07:44:15 +00:00
parent ce73fe0e97
commit 8d86758ed0
1 changed files with 5 additions and 2 deletions
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7
sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zfs_vfsops.h
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@ -110,7 +110,7 @@ typedef struct zfid_short {
} zfid_short_t;
/*
* Filesystems under .zfs/snapshot have a total file ID size of 22 bytes
* Filesystems under .zfs/snapshot have a total file ID size of 22[*] bytes
* (including the length field). This makes files under .zfs/snapshot
* accessible by NFSv3 and NFSv4, but not NFSv2.
*
@ -120,10 +120,13 @@ typedef struct zfid_short {
* 6 bytes object number (48 bits)
* 4 bytes generation number (32 bits)
* 6 bytes objset id (48 bits)
* 4 bytes currently just zero (32 bits)
* 4 bytes[**] currently just zero (32 bits)
*
* We reserve only 48 bits for the object number and objset id, as these are
* the limits currently defined and imposed by the DMU.
*
* [*] 20 bytes on FreeBSD to fit into the size of struct fid.
* [**] 2 bytes on FreeBSD for the above reason.
*/
typedef struct zfid_long {
zfid_short_t z_fid;