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@@ -11,8 +11,8 b' Metadata includes the hash of the revisi' | |||||
11 | links to its *parent* entries. The collective metadata is referred |
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11 | links to its *parent* entries. The collective metadata is referred | |
12 | to as the *index* and the revision data is the *data*. |
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12 | to as the *index* and the revision data is the *data*. | |
13 |
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13 | |||
14 |
Revision data is stored as a series of compressed deltas against |
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14 | Revision data is stored as a series of compressed deltas against | |
15 | revisions. |
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15 | ancestor revisions. | |
16 |
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16 | |||
17 | Revlogs are written in an append-only fashion. We never need to rewrite |
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17 | Revlogs are written in an append-only fashion. We never need to rewrite | |
18 | a file to insert nor do we need to remove data. Rolling back in-progress |
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18 | a file to insert nor do we need to remove data. Rolling back in-progress | |
@@ -35,9 +35,6 b' This integer is logically divided into 2' | |||||
35 | significant half of the integer is the format/version short. The other |
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35 | significant half of the integer is the format/version short. The other | |
36 | short holds feature flags that dictate behavior of the revlog. |
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36 | short holds feature flags that dictate behavior of the revlog. | |
37 |
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37 | |||
38 | Only 1 bit of the format/version short is currently used. Remaining |
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39 | bits are reserved for future use. |
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40 |
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41 | The following values for the format/version short are defined: |
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38 | The following values for the format/version short are defined: | |
42 |
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39 | |||
43 | 0 |
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40 | 0 | |
@@ -53,15 +50,24 b' 57005 (0xdead)' | |||||
53 | beyond 32-bit header. |
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50 | beyond 32-bit header. | |
54 |
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51 | |||
55 | The feature flags short consists of bit flags. Where 0 is the least |
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52 | The feature flags short consists of bit flags. Where 0 is the least | |
56 | significant bit, the following bit offsets define flags: |
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53 | significant bit. The bit flags vary by revlog version. | |
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54 | ||||
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55 | Version 0 revlogs have no defined flags and the presence of a flag | |||
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56 | is considered an error. | |||
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57 | ||||
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58 | Version 1 revlogs have the following flags at the specified bit offsets: | |||
57 |
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59 | |||
58 | 0 |
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60 | 0 | |
59 | Store revision data inline. |
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61 | Store revision data inline. | |
60 | 1 |
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62 | 1 | |
61 | Generaldelta encoding. |
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63 | Generaldelta encoding. | |
62 |
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64 | |||
63 | 2-15 |
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65 | Version 2 revlogs have the following flags at the specified bit offsets: | |
64 | Reserved for future use. |
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66 | ||
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67 | 0 | |||
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68 | Store revision data inline. | |||
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69 | 1 | |||
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70 | Generaldelta encoding. | |||
65 |
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71 | |||
66 | The following header values are common: |
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72 | The following header values are common: | |
67 |
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73 |
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