ilo-pona/xv6-65oo2
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14 commits

Author SHA1 Message Date
Frans Kaashoek 077323a8f0 Rename icache to itable 
The inode cache isn't really a cache. The main purpose of it is to
allow for synchronization (locking individual inodes), providing
long-lived references to inodes, and ensuring that there is only inode
in memory.
 2020-11-23 19:30:15 -05:00
Robert Morris 5e392531c0 hopefully make writei more correct 2020-11-05 06:56:51 -05:00
Frans Kaashoek 6750608824 When either_copyin/out fails, return an error from write/read 
Add a test to check that read/write return an error
 2020-10-03 16:36:20 -04:00
Robert Morris e3b7058907 streamline copyin/copyout code in usertests 
fix bugs in read/write return values when there's an error
 2020-08-10 11:19:10 -04:00
Robert Morris af9eb9114c make "echo hello > x" truncate file x. 2020-08-10 11:19:10 -04:00
Robert Morris 7c7ed20822 don't leak a file system block if the buf argument to write is invalid 
and a usertest
 2019-09-20 13:09:26 -04:00
Frans Kaashoek d98ddadd79 Also release buffer on failed copyout 2019-08-20 12:46:56 -04:00
Frans Kaashoek 6005ef5a1c Release buffer also when copyin fails 2019-08-20 11:57:24 -04:00
Frans Kaashoek a825f22cf8 Merge remote-tracking branch 'origin/master' into riscv 2019-08-19 19:27:29 -04:00
Frans Kaashoek 2501560cd6 Cosmetic cleanup: fsinit reads sb and calls loginit. initialize icache 
in main.c and don't make it disk specific; the icache is shared.  This
doesn't matter since we have only one disk, but conceptually cleaner
and maybe helpful to students for mount lab.
 2019-08-18 14:35:11 -04:00
Robert Morris a77287e924 no more PAGEBREAK 2019-07-24 13:33:43 -04:00
Frans Kaashoek 67702cf706 Checkpoint switching to per-process locks, in attempt clarify xv6's 
locking plan, which is a difficult to understand because ptable lock
protects many invariants.  This implementation has a bug: once in a
while xv6 unlocks a proc lock that is locked by another core.
 2019-07-02 09:14:47 -04:00
Robert Morris a8305b7318 FD_DEVICE 2019-06-13 10:29:27 -04:00
Robert Morris 5753553213 separate source into kernel/ user/ mkfs/ 2019-06-11 09:57:14 -04:00
Renamed from fs.c (Browse further)