9.21. xfs_bmap_alloc

9.21. xfs_bmap_alloc

xfs_bmap_alloc is the switch between the different allocators

normal (xfs_bmap_btalloc)
realtime (xfs_bmap_rtalloc)
filestreams

Realtime uses two bitmaps

one for free space
one for larger clusters of freespace

Quota accounting is also done in bmap routines

inodes have two pointers to dquot's

one for the user
one for the group project

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