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authorzeertzjq <zeertzjq@outlook.com>2023-04-28 21:07:00 +0800
committerGitHub <noreply@github.com>2023-04-28 21:07:00 +0800
commit715587f8e44e941ece6f17eb77620fd1b4719496 (patch)
tree6ede3dcaf23c73e0c5ecf7a65d72364b44e1ad26
parent4f235e3cafba5dc305aa0be33cdec093e9c5a92d (diff)
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vim-patch:8.2.3509: undo file is not synced (#23371)
Problem: Undo file is not synced. (Sami Farin) Solution: Sync the undo file if 'fsync' is set. (Christian Brabandt, closes vim/vim#8879, closes vim/vim#8920) https://github.com/vim/vim/commit/340dd0fbe462a15a9678cfba02085b4adcc45f02 Co-authored-by: Bram Moolenaar <Bram@vim.org>
-rw-r--r--runtime/doc/options.txt4
-rw-r--r--src/nvim/undo.c4
2 files changed, 6 insertions, 2 deletions
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 0aa6769f4e..ba73d79cd3 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -2774,8 +2774,8 @@ A jump table for the options with a short description can be found at |Q_op|.
'fsync' 'fs' boolean (default off)
global
When on, the OS function fsync() will be called after saving a file
- (|:write|, |writefile()|, …), |swap-file| and |shada-file|. This
- flushes the file to disk, ensuring that it is safely written.
+ (|:write|, |writefile()|, …), |swap-file|, |undo-persistence| and |shada-file|.
+ This flushes the file to disk, ensuring that it is safely written.
Slow on some systems: writing buffers, quitting Nvim, and other
operations may sometimes take a few seconds.
diff --git a/src/nvim/undo.c b/src/nvim/undo.c
index f4f97fd8ee..64c16ed192 100644
--- a/src/nvim/undo.c
+++ b/src/nvim/undo.c
@@ -1333,6 +1333,10 @@ void u_write_undo(const char *const name, const bool forceit, buf_T *const buf,
}
#endif
+ if (p_fs && fflush(fp) == 0 && os_fsync(fd) != 0) {
+ write_ok = false;
+ }
+
write_error:
fclose(fp);
if (!write_ok) {