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rsc 2007-08-24 19:46:19 +00:00
parent 895c182d74
commit 4d39b63388
2 changed files with 2 additions and 2 deletions
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2
bio.c
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@ -4,7 +4,7 @@
// holding cached copies of disk block contents. // holding cached copies of disk block contents.
// Each buf has two state bits B_BUSY and B_VALID. // Each buf has two state bits B_BUSY and B_VALID.
// If B_BUSY is set, it means that some code is currently // If B_BUSY is set, it means that some code is currently
// modifying buf, so other code is not allowed to look at it. // using buf, so other code is not allowed to use it.
// To wait for a buffer that is B_BUSY, sleep on buf. // To wait for a buffer that is B_BUSY, sleep on buf.
// (See bget below.) // (See bget below.)
// //

2
fs.c
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@ -6,7 +6,7 @@
// + Directories: inode with special contents (list of other inodes!) // + Directories: inode with special contents (list of other inodes!)
// + Names: paths like /usr/rtm/xv6/fs.c for convenient naming. // + Names: paths like /usr/rtm/xv6/fs.c for convenient naming.
// //
// Disk layout is: superblock, inodes, block not-free bitmap, data blocks. // Disk layout is: superblock, inodes, block in-use bitmap, data blocks.
// //
// This file contains the low-level file system manipulation // This file contains the low-level file system manipulation
// routines. The (higher-level) system call implementations // routines. The (higher-level) system call implementations