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Merge branch 'jh/index-v2-doc-on-fsmn' 

Doc update.

* jh/index-v2-doc-on-fsmn:
  index-format.txt: document v2 format of file system monitor extension
maint
Junio C Hamano 2020-12-17 15:06:42 -08:00
parent 94dc98d1d2 5885367e8f
commit 7bceb83bfe
1 changed files with 8 additions and 2 deletions
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10
Documentation/technical/index-format.txt
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@ -306,12 +306,18 @@ The remaining data of each directory block is grouped by type:

The extension starts with

- 32-bit version number: the current supported version is 1.
- 32-bit version number: the current supported versions are 1 and 2.

- 64-bit time: the extension data reflects all changes through the given
- (Version 1)
64-bit time: the extension data reflects all changes through the given
time which is stored as the nanoseconds elapsed since midnight,
January 1, 1970.

- (Version 2)
A null terminated string: an opaque token defined by the file system
monitor application. The extension data reflects all changes relative
to that token.

- 32-bit bitmap size: the size of the CE_FSMONITOR_VALID bitmap.

- An ewah bitmap, the n-th bit indicates whether the n-th index entry